Turbosound Speaker TA 500 User Manual

ASPECT TA-500 SYSTEMS  
TA-500  
TA-500DP  
TA-500t  
TA-500tDP  
TA-500H  
TA-500HDP  
TA-500HM  
USER MANUAL  
Turbosound Ltd.  
Star Road, Partridge Green  
West Sussex RH13 8RY United Kingdom  
Tel: +44 (0)1403 711447 Fax: +44 (0)1403 710155  
Issue 1.1 © Turbosound Ltd.  
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TA-500  
Flybar Settings ............................................................................................................................................23  
Touring two-wide flybar.............................................................................................................................23  
Table 1: Flying Matrix.................................................................................................................................25  
FC-500T Flying Chains................................................................................................................................25  
TS-890 Tilting Straps ..................................................................................................................................27  
Integral Flying Hardware............................................................................................................................27  
Bolt ...............................................................................................................................................................28  
Captive Biscuit.............................................................................................................................................28  
Connecting Flying Chains to the Cabinet .................................................................................................29  
Sliding the top chain profile into the slot .................................................................................................30  
Connection of additional rows ..................................................................................................................31  
Setting the angles between rows..............................................................................................................32  
Attaching the biscuit...................................................................................................................................32  
Attaching the Tilt Straps.............................................................................................................................33  
Lifting the column.......................................................................................................................................34  
B. TA-500 Install Flying System......................................................................................................................36  
Rigging Instructions....................................................................................................................................37  
Flying a single TA-500 cabinet using M10 eyebolts ................................................................................41  
LMS series Loudspeaker Management Systems .........................................................................................42  
Introduction .................................................................................................................................................42  
Unpacking....................................................................................................................................................42  
Mechanical Installation...............................................................................................................................42  
LMS-D24 and D26 Loudspeaker management Systems .............................................................................43  
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TA-500  
Features .......................................................................................................................................................43  
Front Panel Functions.................................................................................................................................44  
Rear Panel Functions..................................................................................................................................46  
Operating the LMS-D24 and D26...............................................................................................................47  
Starting up...................................................................................................................................................47  
Selecting a Factory Preset..........................................................................................................................47  
Creating a Crossover ..................................................................................................................................47  
Navigation and Viewing Parameters ........................................................................................................48  
Navigation ...................................................................................................................................................49  
Presets..........................................................................................................................................................50  
Preset Recall ................................................................................................................................................50  
Preset Store .................................................................................................................................................51  
DSP Processing Layout ..............................................................................................................................52  
Input DSP block diagram............................................................................................................................52  
Output DSP block diagram.........................................................................................................................52  
Stereo / Mono Formats...............................................................................................................................52  
DSP processing...........................................................................................................................................53  
Input Channels ............................................................................................................................................53  
Parametric Equalisation .............................................................................................................................55  
High and Low shelving filters....................................................................................................................55  
Parametric filters.........................................................................................................................................55  
Output Channels .........................................................................................................................................56  
Gain and Polarity.........................................................................................................................................56  
Delay ............................................................................................................................................................56  
High and Low Pass Filters..........................................................................................................................57  
Parametric Equalisation .............................................................................................................................58  
Limiters ........................................................................................................................................................59  
Routing.........................................................................................................................................................59  
Utilities .........................................................................................................................................................60  
Utility functions...........................................................................................................................................60  
T-25 and T-45 High Efficiency Audio Power Amplifiers...............................................................................61  
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TA-500  
General Features & Facilities .....................................................................................................................61  
Front Panel Functions T-25 ........................................................................................................................62  
Front Panel Functions T-45 ........................................................................................................................63  
Mechanical Installation...............................................................................................................................64  
Mains Power................................................................................................................................................64  
Powering Up................................................................................................................................................64  
Safety Earthing............................................................................................................................................64  
Voltage Setting............................................................................................................................................65  
Voltage Range.............................................................................................................................................65  
Audio Connections & Controls..................................................................................................................65  
Polarity.........................................................................................................................................................66  
Input Impedance .........................................................................................................................................66  
Gain and Sensitivity Settings.....................................................................................................................66  
Attenuation & Gain Setting........................................................................................................................67  
Output Connections....................................................................................................................................67  
Damping Factor...........................................................................................................................................67  
Long Speaker Lines ....................................................................................................................................68  
The Cooling System ...................................................................................................................................68  
Appendix A: Technical Specifications ...........................................................................................................69  
Appendix B: Spare Parts List ..........................................................................................................................71  
Appendix C: Warranty.....................................................................................................................................72  
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TA-500  
EC DECLARATION OF CONFORMITY  
Manufacturer  
Turbosound Ltd  
Star Road, Partridge Green, West Sussex, RH13 8RY  
Products  
TA-500DP  
TA-500tDP  
TA-500HDP  
T-25 Power Amplifier  
T-45 Power Amplifier  
LMS-D26 Controller  
LMS-D24 Controller  
Standards  
Safety  
EN60065:2003  
EN66103-1:1996  
EN55103-2:1996  
Relevant Specifications used as basis for tests  
Category  
Professional apparatus for use in Commercial Light Industrial and controlled EMC  
environments.  
CE Marking  
All products are marked in accordance with the relevant statutory requirements.  
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TA-500  
INTRODUCTION  
Turbosound Aspect System Concepts  
The TA-500 system is a modular point source loudspeaker system designed to deliver  
extremely high fidelity audio. The system is easily scaleable medium scale ground-stacked  
and flown concert touring down to small clubs and events.  
The Aspect system concept centres around the exceptional directivity of the patented  
Polyhorn™ devices employed in the high frequency and high-mid frequency sections of the  
mid/high enclosure. In contrast to the majority of conventional horns, Polyhorns develop  
more consistent frequency response across all seats of an auditorium with minimal  
interference between adjacent enclosures.  
The patented Polyhorn™ devices exhibit a sharp cut-off at the edges of the dispersion  
pattern, making it possible to achieve seamless coverage of a venue with minimal  
destructive interference between elements, however many individual enclosures are  
deployed in the cluster. The Polyhorn™ devices generate phase-coherent and smoothly-  
curved wavefronts which match the array curvature, whose centre becomes the virtual point  
source.  
The TA-500 trapezoidal enclosure can be ground-stacked or flown in arrays. It can also be  
integrated with TA-880 or TA-890 systems as a front or side fill cabinet.  
TSW-218 dual 18” horn-loaded low frequency enclosures or B18 single 18” bandpass  
subwoofers provide ideal sub-bass support for the TA-500.  
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TA-500  
The Aspect Polyhorn™ Concept  
The patented Polyhorn™ design effectively solves the problem of the tendency for  
exponential horns to beam with increasing frequency. Dividing the multi-cellular horn into  
multiple tapered waveguides guarantees that the path length of each micro-horn is equal  
from the surface of the driver diaphragm to the horn mouth, and ensures that all frequencies  
from all parts of the diaphragm arrive at the horn mouth together. This provides the  
wavefront with uniformity of phase. A further benefit of the Polyhorn™ geometry is that the  
sound wave does not suffer from edge-diffraction effects which have a tendency to confuse  
the directionality of the sound source.  
Each cabinet in an array of Aspect loudspeakers contribute to the generation of a single,  
cohesive, and more or less continuous wavefront without noticeable comb-filtering effects. In  
addition, the Polyhorn™ design offers the possibility of locating the acoustic centre well  
behind the motor system and even the enclosure. The wavefront radii can now be arranged  
to coincide with the array curvature, forming a single virtual point source.  
Because of the Polyhorn™ design’s sharp cut-off, its array angle can in practice be taken as  
being the same as the dispersion angle.  
Fig 1. Conventional HF horns produce  
destructive interference  
Fig 2. Poyhorn™ creates smoothly curved and  
phase-coherent wavefront  
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TA-500  
The TA-500 features approximately twice the horizontal and vertical dispersion as  
the narrower TA-880 and TA-890 products, making it more suitable for medium- and  
near-field applications in smaller rooms.  
The Polyhorn™ displays a similarly sharp cut-off at the dispersion edges to the  
narrower TA-880 and TA-890 products, as illustrated below, and this makes it  
practical to cover a lot of small to medium venues with only two cabinets per side,  
giving approximately 100º of horizontal coverage per array.  
TA-880  
TA-500  
narrow 25º horizontal coverage  
wider 50º horizontal coverage  
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TA-500  
The Loudspeaker Management System (LMS) Concept  
Turbosound Loudspeaker Management Systems are more than just electronic crossovers.  
As well as steep slope active filters and high performance limiters, they provide full digital  
alignment of all components in the Aspect enclosures, to ensure a coherent acoustic output.  
They also incorporates a number of features which contribute to overall system reliability  
and ease of setting-up and use.  
All system parameters such as crossover frequencies, limiter settings and equalisation can  
be simply called up from a factory-set menu, making it possible to maintain consistent and  
repeatable system performance.  
Because the power amplifiers can be included as part of the Aspect system, the controllers  
are able to utilise output limiters which are precisely matched to the system requirements,  
being pre-set to prevent the amplifiers from clipping. Inputs and outputs are fully balanced,  
providing isolation between the controller and the amplifier inputs. These factors contribute  
to high reliability in the adverse circumstances often encountered under arduous touring  
conditions.  
In addition, LMS-D2X series controllers are equppied with built-in network capability,  
allowing maximum control and flexibility over the loudspeaker system’s performance and  
security.  
LMS-D2X Loudspeaker Management Systems  
Use of Turbosound loudspeaker management systems ensures accurate time-alignment of  
the system drive units and also provides a facility for users to select additional delay, either  
to compensate for physical displacement of ground-stacked bass enclosures relative to flown  
high packs, or to provide full range delay for correct image localisation or use in distributed  
systems.  
Network Capability  
Turbosound LMS series loudspeaker management systems and Turbosound self-powered  
loudspeaker systems are fully networkable, enabling control and monitoring of all networked  
devices via the BvNet protocol using Turbosound’s TurboDrive™ software, available as a  
free download from the Turbosound website www.turbosound.com  
For a detailed explanation of TA-500 networking capability please consult the TurboDrive™  
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TA-500  
Power Amplifiers  
In addition to the Turbosound T-25 and T-45 model amplifiers recommended for use with  
Aspect systems, the following other power amplifier brands provide sufficient performance  
and mechanical compatibility to perform well with Aspect loudspeaker systems:  
MC2 E series  
Lab Gruppen FP series  
Crest Pro series  
QSC Powerlight II series  
Digital Controllers  
In addition to the Turbosound LMS-D24 and LMS-D26 loudspeaker management systems,  
the following digital crossovers have been tested and are recommended for use with Aspect  
systems:  
BSS FDS366  
XTA 224. 226 and 428  
Dolby Lake Contour and Dolby Lake controller  
Self-powered Loudspeakers  
Aspect TA-500 series cabinets are additionally available with integrated networkable Class D  
amplifier modules, taking consistent performance and ease of use to a new level. Featuring  
lightweight high-power amplifiers using 96kHz DSP and operating at better than 90%  
efficiency, self-powered TA-500 products eliminate the need for separate amplifier racks and  
controllers, as well as the attendant cabling. Powered loudspeakers can be controlled and  
monitored over a network with a PC running the TurboDrive™ software.  
Aspect Loudspeaker Components  
All the drive units have been designed in-house specifically for the Aspect system and are  
manufactured exclusively for Turbosound. This means that they are expressly suited to their  
intended purpose, and make use of innovative features to ensure premium performance.  
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Neodymium magnets are used throughout all drive units. This results in higher efficiency,  
less power compression and reduced overall weight.  
Low-mid frequency drivers are designed to be rear-facing in the enclosure, enabling the  
heatsink / phase plug to be placed in the air flow to aid cooling.  
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TA-500  
TA-500 Three-way Loudspeaker  
The TA-500 trapezoidal enclosure contains a Turbo-  
loaded neodymium 15" LF driver, a custom 10” MF  
driver on a Polyhorn™ device, and a custom HF driver  
on a Polyhorn™ device, covering a frequency range  
from 60Hz up to 18kHz (with DSP). The two Polyhorn™  
devices are designed to generate an exceptionally  
smooth and accurately defined wavefront across a 50º  
horizontal by 25º vertical dispersion pattern, and over  
the entire mid and high frequency bands.  
It is configured as a switchable tri-amped or bi-amped  
(with passive high end) product.  
The TA-500 is equipped for flying in fixed installations with an external flying system.  
TA-500DP Self-powered Three-way Loudspeaker  
The TA-500DP is a networkable, digitally self-powered  
version of the TA-500, and contains a Turbo-loaded  
neodymium 15" LF driver, a custom 10” MF driver on a  
Polyhorn™ device, and a custom HF driver on a Polyhorn™  
device, covering a frequency range from 60Hz up to 18kHz. It  
includes an integrated 2-channel Class D power amplifier  
and control electronics module with built-in network  
capability.  
TA-500t Touring Three-way Loudspeaker  
The trapezoidal TA-500t is fully equipped for flown touring  
applications with an integrated rigging system designed for  
quick and easy flying with the minimum of external parts.  
The rigging system allows speaker clusters up to a  
maximum of nine enclosures to be assembled to suit a wide  
range of venues and audience spaces. It contains a Turbo-  
loaded neodymium 15" LF driver, a custom 10” MF driver on  
a Polyhorn™ device, and a custom HF driver on a  
Polyhorn™ device  
TA-500tDP Self-powered Touring Three-way Loudspeaker  
A self-powered version of the TA-500t with integrated  
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TA-500  
rigging system and integrated Class D amplifier module.  
TA-500H Horizontal Three-way Loudspeaker  
The TA-500H is a horizontally-orientated version of  
the TA-500 with the mid/high section rotated  
through 90° in order to maintain a 50° horizontal  
by 25° vertical dispersion pattern housed in a  
rectangular enclosure.  
TA-500HDP Self-powered Horizontal Three-way  
Loudspeaker  
A self-powered version of the TA-500H horizontal  
enclure with integrated Class D amplifier module.  
TA-500HM Two-way High/Mid Loudspeaker  
A high/mid cabinet used for downfill and infill  
applications. Consists of a custom 10” MF driver on a  
Polyhorn™ device, and a custom HF driver on a  
Polyhorn™ device in a trapezoidal enclosure.  
TSW-218 Subwoofer  
The horn-loaded TSW-218 is designed to  
cover the sub and low frequency ranges from  
25Hz to 160Hz, and can be used as part of a 5-  
way Aspect system in order to reinforce sub-  
bass frequencies. It utilises two custom  
designed neodymium 18” drivers loaded with  
TurboBass™ devices. The proprietary loading  
technique and horn flare design produces  
significant mutual coupling between adjacent  
enclosures, resulting in sensitivity gains of up  
to 110dB with eight units coupled.  
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TA-500  
B18 Subwoofer  
The B18 is a compact bandpass subwoofer designed to be  
used in a variety of installed sound system applications as  
well as portable sub-bass support for Aspect TA-500  
enclosures. It consists of a high-excursion, 4” voice-coil, 18”  
LF driver in a bandpass birch plywood enclosure of modest  
dimensions. Speakon NL4 connectors are provided on the  
rear panel with special cable access bays that allow cabinets  
to be positioned against a wall when interconnected.  
B18DP Self-powered Subwoofer  
A self-powered version of the B18 subwoofer with integrated  
Class D amplifier module.  
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Transportation  
An optional WB-500 wheelboard is available which clips on to the front of the cabinet,  
allowing single units to be conveniently transported. These are designed to be stackable, so  
that when not in use they can be neatly stored without taking up unecessary floor space.  
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TA-500  
FLYING AND STACKING  
Overview  
The Aspect system flying hardware is specifically designed to take advantage of its precise  
horizontal directivity characteristics, as well as to allow a wide range of adjustment of the  
vertical angles between adjacent enclosures, and the overall vertical inclination of each  
column of enclosures. This means that arrays can easily be optimised to suit the coverage  
requirements of any situation.  
Sound radiating from adjacent cabinets will successfully blend over a range of included  
angles, creating a coherent point-source image, and this results in the ability to tailor both  
the overall coverage and the SPL at a given distance.  
The concept of arraying a point-source loudspeaker system is to create part of the surface of  
a sphere. A small part of a large sphere will form a high-directivity (long-throw) system with  
a high SPL at a distance, whereas a large part of a small sphere will be of lower directivity  
producing less SPL at a distance, but having a wider angle of coverage. This approach leads  
to the creation of a virtual point source of sound behind the array.  
There are some simple rules to follow to help achieve this goal:  
Obtain a smooth even curve in the horizontal plane.  
Use a similar amount of tilt on each column.  
Ensure that the bottom corners of each column are in line with each other.  
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TA-500  
Safety Notes on Rigging  
The Turbosound Aspect rigging system has been designed and constructed to  
a high standard of safety, and tested to the most demanding of specifications.  
In order to ensure the highest safety standards, the information following on  
the assembly and safe use of rigging accessories must be carefully understood and followed.  
Only use Turbosound recommended rigging accessories, which are specifically designed for  
their intended purpose. Do not use Turbosound rigging with other types or brands of  
loudspeakers. This practice may compromise safety standards and Turbosound will not be  
responsible for damage or injury so caused.  
Do not modify the rigging accessories, or use them in a way other than that described in this  
user manual. Rigging components supplied as part of a complete assembly are non-  
interchangeable and must not be exchanged with the component parts of any other  
assembly.  
The component parts of a Turbosound rigging accessory must only be assembled using the  
fasteners and methods of assembly recommended in this manual. The use of fasteners and  
methods of assembly not specified or approved by Turbosound may result in an unsafe  
rigging assembly. Welding, or any other means of permanently fixing rigging components to  
each other or to cabinet fixing points is not allowed.  
Rigging assemblies must only be assembled using the appropriate parts and fixings as  
specified in this manual using the specific mounting instructions. Rigging components or  
assemblies must only be fixed to Turbosound loudspeaker cabinets using the cabinet fixing  
points, assembly methods and fasteners specified in this manual and the specific mounting  
instructions.  
Walls, floors or ceilings must be capable of safely and securely supporting the actual load.  
The rigging accessory used must be safely and securely fixed both to the loudspeaker and to  
the wall, floor or ceiling.  
When mounting rigging components on walls, floors or ceilings ensure that all fixings and  
fasteners used are of an appropriate size and load rating. Wall and ceiling claddings and the  
construction and composition of walls and ceilings all need to be taken into account when  
determining whether a particular fixing arrangement can be safely employed for a particular  
load. Cavity plugs or other specialist fixings, if required, must be of an appropriate type,  
fitted and used in accordance with the maker’s instructions.  
Use only the rigging accessory fixing holes indicated in this manual and the specific  
mounting instructions to fix Turbosound rigging accessories to walls, floors or ceilings.  
Where specified, the recommended maximum torque settings for screw fasteners must be  
strictly complied with.  
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Secondary Safeties  
All loudspeakers flown in theatres, studios or other places of work and entertainment must,  
in addition to the principle load bearing means of suspension, be provided with an  
independent, properly rated and securely attached secondary safety.  
Only steel wire ropes or steel chains of an approved construction and load rating may be  
used as secondary safeties. Plastic covered steel wire ropes are not permitted for use as  
secondary safeties.  
Safety Inspections  
Carefully inspect rigging systems components and cabinets for defects or signs  
of damage before proceeding to assemble a flown array. If any parts are  
damaged or suspect, DO NOT USE THEM.  
Regular, more rigorous test and inspection of rigging components must also be carried out.  
Safety legislation and test and inspection requirements will vary from country to country. In  
most cases, annual independent test and inspection by a suitably approved and qualified  
inspector will be required. Users must ensure compliance with all applicable safety  
requirements.  
Turbosound recommends regular safety inspections and further recommends that a logbook  
be kept detailing the test and inspection history of each Turbosound rigging accessory.  
Turbosound has adopted the following load safety factors:  
12 x load safety factor: Chains, ropes, shackles, eyebolts, straps and hooks.  
5 x load safety factor: Accessories generally employed in fixed, permanent  
installations.  
Always wear protective headwear, footwear and eye protection in accordance with local  
regulations. Anyone involved in flying ANY sound system, especially in a touring capacity,  
should take note of the following advice:  
The rigging of a flown sound system may be dangerous unless undertaken by qualified  
personnel with the required experience and certification to perform the necessary tasks.  
Fixing of hanging points in a roof should always be carried out by a professional rigger and  
in accordance with the local rules of the venue. The house rigger and/or building manager  
must always be consulted.  
You should observe particularly the following points:  
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When initially ratcheting a column of speakers it is good to bear in mind the expected angle  
of inclination so as to avoid ending up with too much of the strap left on the ratchet. This is  
important because the ratchet can only take three complete turns before it releases itself.  
WARNING: If a tilt strap is released suddenly, the column of enclosures may  
tend to swing violently forwards and care must be taken to avoid danger to  
persons in the vicinity. It is essential to check that nobody is standing  
immediately in front of the column, and to give a suitable warning, before the strap is  
released. Ideally, two persons should support the column from the side whilst the strap is  
released, or alternatively the bottom row may be returned to the ground before release. In  
any event it is essential that all personnel in the vicinity are aware that the system is about to  
move and that they must keep clear.  
Aspect Flying System components have been individually tested in accordance with the  
following regulations:  
The Health and Safety at Work Act 1974  
The Supply of Machinery (Safety) Regulations 1992  
The Lifting Operations and Lifting Equipment Regulations 1998  
Each component is covered by a Record of Load Test Certificate, which may be obtained on  
request from Turbosound, quoting the indentifying number(s) from the flying equipment. A  
copy of a sample certificate is reproduced overleaf.  
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Sample Certificate of Load Test  
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TA-500  
FLYING HARDWARE  
Aspect TA-500 Flying Systems  
To take full advantage of the very precise dispersion properties of the Aspect system, two  
types of rigging system have been developed: a fully-integrated touring flying system which  
allows clusters to be rigged quickly and easily with an absolute minumum of additional  
external hardware; an an external flying system designed for use in fixed installations.  
The flying systems are inherently safe, flexible and simple to use. The rigging design allows  
the creation of clusters and arrays that can be assembled quickly and with a minimum  
number of crew, and with full control of the vertical angles between enclosures and their  
vertical inclination.  
Horizontal Coverage  
Because the Polyhorn’s design dramatically reduces the acoustic energy outside of the  
specified 50° horizontal dispersion pattern, it is recommended that Aspect TA-500 enclosures  
always be arrayed in a smooth even curve, resulting in an array angle of 50° between boxes.  
Based on this assumption it is an easy job to assess how many columns, and therefore which  
particular combination of flybars, will be needed to achieve the required coverage.  
Vertical Coverage  
Vertical coverage is dictated by the physical dimensions of the room and the location of the  
audience spaces. The number of boxes required in a vertical column is therefore determined  
by a number of factors including the trim height of the cluster, the vertical coverage you are  
trying to achieve, and the distance or projection required.  
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TA-500  
A. TA-500T TOURING FLYING SYSTEM  
Consists of fully-integrated rigging hardware used together with fixed angle flybars offering  
the ability to fly single columns, and two-wide and three-wide clusters up to a maximum total  
of nine enclosures.  
The Aspect TA-500t touring flying hardware consists as follows:  
Chain bridle – for lifting the flybar  
Flybars – 2-wide and 3-wide variants for hanging up to 9 enclosures (3 wide by 3  
deep)  
Flying chain assembly – for connector a column of enclosures to the flybar.  
Tilting strap – to provide the angle of tilt for the column  
Inter-cabinet link chains – for connecting the rows of enclosures together  
Integral flying hardware – fitted to the enclosure  
Flybar Settings  
In order to accommodate the wide range of vertical coverage requirements dictated by a  
particular venue, the flybars offer two sets of lifting points, enclosure attachment points and  
lifting strap points. With reference to the table below the correct point can be selected for the  
required application.  
The flybars also accomodate single column attachment points to enable users to suspend up  
to three rows of loudspeakers in a single column format. No additional parts or flybars are  
required to accommodate virtually all situations; it can all be achieved using only one type of  
flybar.  
Touring two-wide flybar  
A fixed angle double bar fabricated from box steel section and designed to fly two vertical  
columns of cabinets up to three deep per column. It provides alternative cabinet suspension  
tabs and tilt strap points for narrow or wide configurations (when flying more than two  
boxes deep the wide configuration allows for the additional amount of kelp required), plus  
lifting points and safety points. A two-wide, three deep cluster can be flown from a single  
half-tonne motor using a CB-8003 chain bridle. Rugged lifting eyes are used preventing  
damage to lifting points and ensuring ease of connection.  
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The net weight of the bar is 21kg and the SWL is 380kg.  
TOP VIEW  
PICKUP POINT  
(NARROW)  
PICKUP POINT  
(WIDE AND SINGLE)  
TILT STRAP POINT  
ENCLOSURE LIFT  
POINT (WIDE)  
ENCLOSURE LIFT  
POINT (SINGLE)  
BOTTOM VIEW  
ENCLOSURE LIFT  
POINT (NARROW)  
Figure 1: FB-500T/2W Touring Two-wide Flybar  
Figure 2: Flybar Lifting Points and Dimensions  
Two columns of enclures can be flown from the FB-500T/2W flybar. Additionally a single  
column facility is provided allowing the flying of a single column of enclosures.  
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The following combinations are possible using the two-wide flybar.  
Table 1: Flying Matrix  
Number of  
Rows  
Number of  
enclosures per  
row  
Maximum total  
column angle  
Flybar pickup  
point  
Angle between rows  
1
2
3
1
2
2
3
1
1
1
2
2
2
2
As required  
21°  
Single  
Single  
Single  
Narrow  
Narrow  
Wide  
FC-500T Standard  
FC-500T Standard  
FC-500T Long  
42°  
As required  
7°, 14°  
21°  
FC-500T Standard  
FC-500T Standard  
FC-500T Standard  
FC-500T Long  
14°, 28°  
Wide  
In addition to the above stated angles, a further 5° of downward tilt angle is supported.  
The process of flying boxes is achieved by suspending the columns of loudspeakers using  
chains attached to the top enclosure and the lifting points on the flybar. The flybars have a  
fixed angle thus ensuring the optimum horizontal dispersion is maintained. Kelp is applied to  
the columns to apply up to 5° of downward tilt as well as providing the means to achieve the  
pre-set angles dictated by the inter cabinet links.  
There are two flying chain assemblies – a standard length version and a longer version. The  
standard length FC-500T Standard is for use with the narrow settings on the flybar and the  
longer FC-500T Long is for use with the wide settings – typically three rows of enclosures.  
FC-500T Flying Chains  
The flying chains are available in two lengths. The shorter FC-500T Standard chain is the  
standard part used for most applications, while the longer FC-500T Long version is used for  
three deep configurations. The assemblies consist of a swivelling hook, chain links and a  
cabinet attachment fitting. When flying systems always ensure that the flying chains are  
straight and that there is no evident twist in the chain.  
Chains are universal (not handed) and therefore can be used for either side of the cabinet.  
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FC-500 flying chains are load tested to 140kg. The inter-cabinet chain assembly is rated at  
60kg. Two inter-cabinet chain sets plus one top chain set provides the facility for lifting a  
maximum of three rows of enclosures.  
FC-500T Long Flying Chain  
Net weight is 1kg (2.2lbs)  
FC-500T Standard Length Flying Chain  
Net weight is 1kg (2.2lbs)  
Inter-cabinet Link  
Net weight is 0.5kg (1.1lbs)  
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TS-890 Tilting Straps  
0.5m  
4.5m  
The tilting strap, TS-890, is in two parts. The longer part is attached to the tilt strap point on  
the flying bar using the buckle at its end. The other part of the strap with the ratchet is  
hooked into the tilt strap point on the underside of the bottom enclosure. The free end is then  
threaded through the ratchet and the strap tightened to achieve the desired tilt. The tilt strap  
is designed to ratchet in both directions so that the amount of tilt on a column may easily be  
increased or reduced incrementally. The ratchet is double acting serving to ensure the safety  
of the operator by limiting the swing of the cluster when letting off the load.  
Integral Flying Hardware  
Aspect cabinets are flown and connected in vertical columns by means of the integral flygear  
that is rebated into the cabinet sides. In this way the load of the cluster is taken entirely  
through the steelwork and not through the box. It essentially consists of a moveable drop  
link that engages into a receptacle in the cabinet below with a choice of inter-cabinet angles.  
All parts of the flygear are fitted flush with the woodwork of the cabinet, and can quickly and  
easily be removed for safety testing using a Torx TX20 bit.  
The following diagram decribes the various parts of the flygear.  
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Bolt  
Figure 3: Cabinet Integral Flygear  
Captive biscuit  
Bolt  
A retractable sliding bolt manufactured from high tensile steel which is used to connect the  
links to the cabinet for suspending the column and the rows below.  
Captive Biscuit  
A captive biscuit is included in the cabinet, retained by a spring-loaded ball bearing. The  
component is designed to tie the backs of the cabinets together, whilst allowing up to 21° of  
vertical angle between rows.  
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Connecting Flying Chains to the Cabinet  
The bolt slides back along its runner enabling the placing of the profile into the slot. The bolt  
is spring loaded to ensure that when in its closed position (as shown below) it is free from  
vibration and cannot be damaged.  
Bolt  
Slot  
Figure 4: Locking Mechanism  
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Sliding the top chain profile into the slot  
The profile is positioned into the slot so that the ‘wings’ bear on the top of the integral  
flygear assembly.  
Figure 5: Assembly of the Top Chains to the Cabinet  
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Connection of additional rows  
If additional rows are required, (up to two additional rows can be accommodated) in the  
cluster, these are easily attached using the integral hardware and the inter-cabinet link  
chains. The enclosures are stacked on the ground in appropriate positions to allow easy  
lifting with the flybar. The inter-cabinet link chains are attached from the outside of the  
cabinets using a similar procedure to the top chain assembly.  
Figure 6: Adding additional rows  
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The lower link must fit into the flygear in a specific way to ensure the reinforcing part bears  
on the flygear appropriately:  
the link must be inserted correctly. Make sure that when using the 21° position  
the link is fitted parallel to the cabinet side.  
Figure 7: Lower link positioning looking from bottom of cabinet  
Setting the angles between rows  
The setting of the angles between the rows is easily achieved by selecting the desired hole in  
the index link relating the angle:  
Figure 8: Index link angle setting  
Attaching the biscuit  
Once the inter-cabinet chains have been connected both sides, the captive biscuit must be  
engaged. To do this, the biscuit is pushed out of its holder in the upper cabinet into the upper  
kelping bracket of the lower cabinet:  
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Figure 9: Biscuit slides into lower cabinet  
Attaching the Tilt Straps  
When all cabinets have been linked and the top chains attached, the tilt straps can now be  
attached.  
First attach the longer strap to the flybar by sliding the flat buckle into the tilt strap  
attachment point. Slide the flat buckle on the shorter strap into the tilt strap point on the  
bottom of the cabinet, insert the free end of the strap through the centre of the ratchet  
spindle, and pull to apply some tension before ratcheting the column.  
WARNING  
The tilt strap is designed to ratchet in both directions, an improvement over previous  
versions which did not allow incremental tilt reduction. However, at all times please note that  
if the tension on the strap is released suddenly, the column of enclosures may tend to swing  
violently forwards and care must be taken to avoid danger to persons in the vicinity. It is  
essential to check that nobody is standing immediately in front of the column, and to give a  
suitable warning, before the strap is released. Ideally, two persons should support the row  
from the side whilst the strap is released, or alternatively the bottom row may be returned to  
the ground before release. In any event it is essential that all personnel in the vicinity are  
aware that the system is about to move and that they must keep clear.  
SAFETY NOTE: Turbosound flying systems have been designed and  
constructed to a high standard of safety and tested to the most demanding of  
specifications with a high safety factor. However, anyone involved in flying  
ANY sound system, especially in a touring capacity, should take note of the following advice:  
The rigging of a flown sound system may be dangerous unless undertaken by qualified  
personnel with the required experience to perform the necessary tasks. Fixing of hanging  
points in a roof should always be carried out by a professional rigger and in accordance with  
the local rules of the venue. The house rigger and/or building manager must always be  
consulted.  
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Lifting the column  
When ALL the chains have been connected and the biscuit has been interlocked, the column  
is ready for lifting. Using the appropriate lifting point on the flybar, attach the bridle and lift  
ensuring during the lifting process that the column lifts evenly.  
Figure 10: Front view of the assembled cluster  
Figure 11: Rear view of the assembled cluster  
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B. TA-500 INSTALL FLYING SYSTEM  
The flying system is designed to provide the following configurations of flown arrays:  
Number of Rows  
Number of enclosures per row  
Angle between rows  
1
1
1
2
2
2
3
3
3
1
2
3
1
2
3
1
2
3
0° – 25°  
0° – 25°  
0° – 25°  
0° – 25°  
0° – 25°  
0° – 25°  
The Aspect TA-500 install flying hardware consists as follows:  
Enclosure connector – attaches to the top of a row of cabinets  
Hinge brace – top brace that locks cabinets at the top of the row. Available in 2-wide  
or 3-wide variants  
Rear brace – bottom brace that locks cabinets together at the bottom of the row.  
Available in 2-wide and 3-wide variants  
Angle adjustment bars  
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Rigging Instructions  
STEP 1 - Set the boxes out on the floor with the sides touching. Remove the M10 blanking  
screws from the rear of the boxes at top and bottom as illustrated.  
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STEP 2 - Fit a 3-wide hinge brace to the top of the array and a 3-wide rear brace to the  
bottom of the array using the twelve M10 x 40mm hex screws provided and torque to 25Nm.  
The use of thread-locking compound is recommended (see Appendix). Fit an M10 eyebolt to  
the centre of the rear brace.  
STEP 3 – Fit the enclosure connector to the top of the array.  
Locate the four M10 eyebolts from the fixings kit supplied and insert these through the  
enclosure connector into the rigging points on the centre cabinet. These will be used to pick  
up the array.  
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Locate the four M10 x 40mm hex screws from the fixings kit and insert these through the  
enclosure connector into the rigging points on the two outside cabinets, together with four  
M10 shakeproof washers.  
Use the four M10 x 35mm hex screws from the fixings kit to lock the enclosure connector to  
the rear brace together with four flat washers and four M10 nylock nuts.  
All fixings should be thread-locked and torqued to 25Nm.  
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STEP 4 – The array is now ready to pick up.  
Pickup points  
234mm [9.2"]  
Two independent pick-up points are recommended, spaced approximately 430mm (16.9”)  
apart, using the front two eyebolts. The two rear eyebolts are provided as safety points.  
Ensure all components are assembled using lock-tight.  
The total cluster weight including rigging hardware is approximately 210 kgs (462 lbs).  
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Flying a single TA-500 cabinet using M10 eyebolts  
The simplest method of flying a TA-500 cabinet is with a pair of M10 shoulder eyebolts on  
the top, using a third eyebolt on the rear of the cabinet to tilt the cabinet.  
1. Remove the two countersunk M10 screws located towards the front of the cabinet.  
2. Replace these with M10 shoulder eyebolts with a minimum thread length of 20mm (3/4”)  
3. Angle the cabinet as necessary using the third eyebolt position on the rear of the cabinet.  
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LMS SERIES LOUDSPEAKER MANAGEMENT SYSTEMS  
Introduction  
This section is provided with the aim of assisting sound engineers, installers and consultants  
to fully understand Turbosound Loudspeaker Management Systems, and to obtain the full  
benefit of their capabilities.  
The Turbosound LMS-D26 and LMS-D24 are recommended for use with Aspect loudspeaker  
systems, offering varying features and facilities depending on the specific application.  
Unpacking  
As part of Turbosound's system of quality control, the product is carefully checked before  
packing, to ensure flawless appearance. After unpacking the unit, please inspect for any  
physical damage. If any damage has occurred, please notify your dealer immediately, so that  
a written claim for damages can be initiated. You, the consignee, must instigate any claim.  
Please retain all packaging in case of future re-shipment.  
There will be a small packet of spare fuses with the unit. Please keep them in a safe place.  
Mechanical Installation  
A vertical rack space of 1U (44mm / 1.75") is required for each unit. If used in a mobile or  
transportable system, the unit must be supported at the rear by additional bracing or  
shelving, to prevent vibration-induced metal fatigue of the racking ‘ears’. Failure to do this  
will impair reliability and invalidate the Warranty. The rack casing will need a depth of  
425mm (minimum) to clear the connectors.  
Adequate ventilation must be provided by allowing sufficient room around the sides and rear  
of the unit to permit free circulation of air. Forced cooling is not required, a factor which aids  
component longevity. The front of the unit should not be exposed to long term direct  
sunlight as this can have a detrimental effect on the display lens.  
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LMS-D24 AND D26 LOUDSPEAKER MANAGEMENT SYSTEMS  
Features  
Minimal signal path design, providing exceptional audio quality with carefully  
optimised processing and high performance converters for a full >111dB dynamic  
range, 96kHz sampling rate and minimal filtering. Audio-grade capacitors are used  
in the analogue signal path.  
Sonically superb ADC / DAC combination; a carefully matched pairing of the best  
devices from Burr Brown and Wolfson.  
Newly released family of Analogue Devices SHARC DSP.  
Extended bandwidth; 96kHz sampling frequency provides for a nominally flat  
response to 40kHz.  
Front panel parameter rotary encoder provides a familiar and easy to use control  
format with all filter information displayed simultaneously on a backlit LCD display.  
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Front Panel Functions  
Channel Select  
buttons  
2x 24 character  
LCD  
Limiter  
Indicators  
Store and  
Recall buttons  
Input Signal  
Indicators  
Parameter Edit  
Encoders  
Edit Parameter  
Select buttons  
Output Mute  
buttons  
Input Signal Indicators – A set of three pairs of LED’s indicate signal present, +4dBu and input  
clip for both channels. The signal present LED’s operate at approximately –40 dBu, giving a  
useful indication of even relatively low input signal levels. The +4 dBu LED’s are intended to  
show nominal operating level and can also be useful for setting system gain structure. Clip  
LED’s warn the user of input overload and operate at +19 dBu.  
Program Store and Recall – these controls provide access to 45 presets. Pressing the store  
button allows the user to name a preset and choose which memory location it will be held in.  
Pressing store button again completes the process. The Recall function operates in a similar  
way, pressing the recall button allows the user to select which preset they require, pressing  
the button for a second time, then confirming, recalls the new DSP settings. The unit allows  
the user to set up user programs with full access to all parameters.  
Note that presets cannot be stored or recalled when secure mode is activated.  
Channel Selection Buttons – the currently selected channel is displayed on the top left hand  
corner of the LCD. Pressing the channel buttons scrolls through the available input and  
output channels and finally through the utility functions and back to the default screen. If  
operating a stereo-linked preset the channel name will indicate the channel pairing. For  
example ‘A+B’ means both input A and B parameters. The name of the output will be shown  
briefly at the top of the display when stepping onto an output.  
Edit Select Buttons – the currently selected edit parameter is displayed on the bottom left  
corner of the LCD. Pressing the edit select buttons moves through the available parameters  
for the current input or output.  
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Text display – preset, channel, parameter and status information is shown on the 2x 24-  
character text display. In most screens the currently selected channel is displayed on the  
upper line and the edit parameter on the lower line. To simplify the display and enhance  
security, some parameters or parameter pages are omitted when not relevant.  
Parameter Knobs – three velocity sensitive parameter knobs are used to adjust parameters  
shown on the display. Up to three parameters are displayed on the screen. The parameter  
name is shown above the parameter value in each of the three screen sections. The  
parameter knobs have a fixed association with the screen sections; the rightmost parameter  
knob adjusts the rightmost parameter and so on.  
Output signal and limiter indication – two LED’s are provided for each output channel. These  
show the signal level relative to the limiter threshold. The yellow LED will light when the  
signal is 6dB below the threshold and the red warning LED will light when the limiter  
threshold is reached.  
Mute buttons and status LED’s – each output has a mute button and associated mute status  
LED. Pressing the button toggles the mute on and off.  
Note that the mute buttons do not function when the Secure Mode is activated.  
Secure Button (on the rear) – a momentary button is fitted behind the rear panel, between  
the output XLRs and the RS232 port. When activated, this will disable all the front panel  
controls so they cannot affect the signal path, making the unit secure against tampering.  
When in secure mode, the indicators still operate normally.  
Note that the communications port is still active in secure mode.  
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Rear Panel Functions  
Secure Mode  
Switch  
Network Card  
Audio Input  
Connectors  
Power Inlet  
Audio Output  
Connectors  
Serial Comms  
Port  
Power Inlet – provides connection to a suitable mains electricity supply using the cable  
supplied. The controller has a switch mode power supply that is capable of operating with a  
nominal mains voltage of 80 to 240v, 50/60Hz without re-configuration.  
Network card – connects to a PC via a BvNet interface to enable network control of the  
loudspeaker system.  
Audio Input connectors – these are fully balanced and are wired pin 1 ground, pin 2 hot and  
pin 3 cold. The two inputs have pin 1 connected directly to the chassis and feed the signal  
processing chains. If an unbalanced source is used, a connection should be made between  
the pin 3 ‘cold’ signal and the ground connection of the unbalanced source.  
Audio Output connectors – the processed outputs are impedance balanced, and are wired  
pin 1 ground, pin 2 hot and pin 3 cold. An unbalanced input may be driven by by connecting  
pin 3 ‘cold’ signal to the ground connection of the unbalanced destination input. Note that  
output pin-1’s are ground lifted at audio frequencies but connected to ground at RF for good  
EMC performance. The intention being that the amplifiers the processor is driving should be  
responsible for the grounding of their input cable shields.  
Communications port connector – the unit may be controlled entirely from another  
controller (typically a Personal Computer), running an application that is compliant with the  
ObCom standard. Connection will normally be made to the controller via this serial port  
connector. This port is also used for updating the firmware in the unit.  
Note: The communications port is NOT disabled when the front panel is made secure using  
the secure button.  
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Operating the LMS-D24 and D26  
Starting up  
The unit will energise as soon as power is applied to the IEC inlet; there is no power switch.  
During the start up process the firmware application model number and version numbers are  
displayed and the outputs are muted until the unit has completed its internal checks. Once  
the start-up routines are complete and the unit is ready to pass audio, the DSP signal path  
will be restored to the current settings when it was last powered down and the audio signal  
is gradually ramped up to its correct level.  
Selecting a Factory Preset  
There is a library of thirty Factory Presets to suit a range of Turbosound enclosures.  
Factory Presets contain some parameters that are fixed and hidden from view; the remainder  
of the DSP parameters are available for user manipulation. The number and type of hidden  
parameters is dependant on the Factory Preset, typically crossover frequencies, output delay  
and some EQ’s are hidden; those settings that are a function of the loudspeaker cabinet  
design and should not require adjustment for different applications.  
To recall a Factory Preset for a particular cabinet or system, press Recall and use the left  
hand parameter knob A to scroll through the available factory preset locations (as indicated  
by a box symbol after the preset number). Once the appropriate preset has been selected  
press recall again, at which point you will be asked to confirm the action by pressing recall  
for a third time. This is to guard against accidental recall of Presets.  
Factory Presets are locked so they cannot be over-written. The user can, however, store an  
edited version of a Factory Preset in any free preset location.  
Details of all the Factory Presets can be found in Appendix A.  
Creating a Crossover  
In addition to the Factory Presets the unit has two further ‘Base Presets’; mono and stereo.  
These Base Presets are stored in locations 1 and 2 respectively, they can be used to develop  
settings for any loudspeaker combination and are recalled in the same way as the Factory  
Presets described above. These Presets are also locked but the user can name and store their  
own edited versions in any free preset location.  
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Navigation and Viewing Parameters  
(Note: The LMS-D26 is shown in all the following screen shots; however the features and  
parameters apply equally to the LMS-D24)  
Many of the processing elements in each input and output path have features that may be  
controlled by the user, such as gain, frequency or limiter threshold. We call these adjustable  
features parameters.  
LMS-D26  
In A Freq Width Gain  
EQ1 100Hz 1.4Q 0.0dB  
c
b
a
a
b
c
A parameter may be adjusted when it is displayed by turning one of the three-parameter  
knobs. Each of the three-parameter knobs is associated with a zone on the display. Adjusting  
the leftmost parameter knob will change the value of the parameter showing in the leftmost  
zone of the display and so on. Turn a knob clockwise to increase the value of a parameter, or  
anti-clockwise to decrease it. The knobs are velocity-sensitive so turning a knob rapidly will  
cause the action to ‘accelerate’, so the value changes more rapidly.  
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Navigation  
The DSP parameters are organised by channel. The currently selected channel is shown in  
the top left hand corner of the display. You can navigate between the channels by pressing  
the channel buttons. Pressing the channel buttons will scroll through the channels, utilities  
and back to the default screen. When using a Preset that is stereo linked, the channel  
selection will reflect this. For example ‘1&4’ indicates outputs 1 and 4. When navigating onto  
an output channel, the usage of the output, as define in the factory preset, will be shown  
briefly at the top of the screen.  
CHANNEL  
LMS-D26  
Out1 Freq Width Gain  
EQ1 100Hz 1.4Q 0.0dB  
EDIT  
c
b
a
Pressing the edit navigation buttons gives access to the various pages of parameters  
available for each channel. The currently selected page is shown in the bottom left hand  
corner of the display, this is omitted on some pages where the function is obvious. The  
screen shows up to three (normally related) parameters for a given part of the processing  
functions on a given channel.  
The edit buttons allow you to scroll, in either direction, through the different processing  
pages for a given Channel. When you go past the last page, you will be returned to the  
default page.  
The channel buttons allow you to scroll, in either direction, through the input and output  
channels, whilst trying to maintain the currently viewed processing block. If the channel you  
scroll to does not have the currently viewed processing block, the next one will be shown  
instead.  
NB. When the unit powers-up, the settings will be the same as those when the unit was last  
switched off.  
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Presets  
The device contains a total of forty-five user and Factory Presets. The user cannot overwrite  
the basic mono, basic stereo or Factory Preset programs.  
Preset Recall  
To select an existing Preset, press the Recall Button so the indicator above it illuminates.  
Turn parameter knob A until the required Preset number is shown on the display. Factory  
presets are indicated by a box symbol appearing after the preset number. Press the Recall  
Button again to activate the Preset. Pressing any other button will cancel the operation.  
LMS-D26  
Preset Name  
Recall 32  
My System  
c
a
b
SELECT PRESET  
TO RECALL  
RECALL  
RECALL  
a
Users can develop their own Preset based on one of the basic or Factory Presets stored  
within the device. Once a basic or user Preset has been recalled, a user has complete  
freedom to adjust any or all of the parameters. Factory Presets can be used as the basis for  
user Presets but they have some parameters that are predefined as a function of the  
loudspeaker system. These parameters are ‘hidden’ from the user, as they should be  
constant regardless of application.  
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Preset Store  
To store the current Preset in a user location, press the Preset Store Button so the indicator  
above it illuminates. Turn the first parameter knob until the required Preset location number  
is show on the display. A Preset name of up to 12 characters in length can be entered using  
parameter knobs B and C. Pressing the Store Button again completes the process and stores  
the Preset. As with Preset Recall, pressing any other button cancels the operation.  
LMS-D26  
Preset Name  
Store 32  
My System  
c
a
b
SELECT STORE  
LOCATION  
STORE  
STORE  
a
b
c
NAME PRESET  
The user can overwrite non-protected Presets only; if an attempt is made to save a Preset in a  
location already occupied by a basic or Factory Preset a ‘LOCKED PRESET’ message is  
displayed.  
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TA-500  
DSP Processing Layout  
Input DSP block diagram  
Input  
Input A  
Input  
Gain  
4th Order  
HPF  
Low  
Shelf EQ  
Six Band  
PEQ  
High  
Shelf EQ  
Delay  
- 6dB  
LED’s  
Routing  
SUM  
NB. Channel B processing is  
identical to Channel A but for  
clarity it is not shown  
Input B  
Output DSP block diagram  
8th Order  
HPF  
8th Order  
LPF  
Low  
Shelf EQ  
Six Band  
PEQ  
High  
Shelf EQ  
Output  
Gain  
Delay  
Mute  
Limiter  
Routing  
Metering  
Stereo / Mono Formats  
There is only one ‘standard’ layout of the processing blocks, but flexible routing and control  
linking allows this layout to be adapted to a wide variety of applications.  
There are two ‘Formats’, Mono or Stereo. With the Mono format, all outputs have unique  
parameter settings, and all outputs are identical in terms of processing functions and routing  
capability. This is the most flexible Format.  
Stereo format pairs the inputs and outputs for stereo operation, the parameters of each  
member of the pair being identical. The routing of inputs to outputs is fixed. This format is  
intended for symmetrical stereo operation, eliminating the need to make identical parameter  
adjustments for each channel.  
The channel pairing is:  
Left and Right Inputs  
Outputs 1 (routed from L input) and 3 (routed from R input) [1 and 4 for LMS-D26]  
Outputs 2 (routed from L input) and 4 (routed from R input) [2 and 5 for LMS-D26]  
Outputs 3 (routed from L input) and 6 (routed from R input) – LMS-D26 only]  
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DSP processing  
Input Channels  
Gain  
LMS-D26  
In A Gain  
0.0dB  
c
a
b
a
Knob A: Gain, adjustable in 0.2dB steps from –80 dB to +20dB  
Delay  
LMS-D26  
In A Delay  
1.50ms  
c
a
b
a
Knob A: Delay, adjustable in variable steps from 0 to 400ms  
The delay parameter is adjustable in fine steps at low values; the adjustment becomes  
progressively coarser as the value increases. The velocity sensitive Parameter Knobs  
therefore provide accurate setting of driver offset delays (typically below 10ms) and rapid  
setting of longer system alignment delays.  
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High Pass Filter  
LMS-D26  
In A Freq Shape  
HPF 20.0Hz LR24  
c
a
b
a
b
Knob A: Frequency, out (off), 10.0Hz to 25.6kHz in variable steps  
Knob B: high pass filter type  
System high pass filtering is provided for the input signal. This is the preferred location for  
high pass filtering as it affects all outputs and can therefore improve inter-band phase  
relationships. Filter type is selectable from Butterworth, Bessel, Linkwitz-Riley and Hardman.  
Filter slopes of up to 4th order or 24dB / octave are provided. Not all filter types are available  
in all slopes. For example 18dB / octave Linkwitz-Riley filters do not exist.  
The Hardman type filter is always described by its’ order as the filter becomes progressively  
steeper rather than following a linear slope so a dB/octave description is not accurate.  
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Parametric Equalisation  
Eight sections of equalisation are provided, two shelving filters and six fully variable  
parametric sections.  
High and Low shelving filters  
LMS-D26  
In A Freq Slope Gain  
EQ1 100Hz 12dB 0.0dB  
c
b
a
a
b
c
Knob A: Frequency, 10.0Hz to 25.6kHz in variable steps  
Knob B: Slope, 6 to 12dB / octave in 1dB steps  
Knob C: Gain, +/-15dB in 0.2dB steps  
The frequency is specified as point where the filter deviates by 3dB from the gain value.  
Parametric filters  
LMS-D26  
In A Freq Width Gain  
EQ1 100Hz 1.4Q 0.0dB  
c
b
a
a
b
c
Knob A, Centre Frequency, 10.0Hz to 25.6kHz in variable steps  
Knob B, Width, display selectable, Q or BW (Bandwidth)  
BW adjustable from 0.05 to 5 octaves in variable steps  
Q adjustable from 14.2 to 0.2 in variable steps  
Knob C, Gain, +/-15dB in 0.2dB steps  
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Output Channels  
Gain and Polarity  
LMS-D26  
Out1 Gain Pol  
0.0dB Rev  
c
a
b
a
b
Knob A: Gain, adjustable in 0.2dB steps from –80 dB to +20dB  
Knob B: Polarity, selectable, normal or reversed with reference to other outputs  
Delay  
LMS-D26  
Out1 Delay  
1.50ms  
c
a
b
a
Knob A: Adjustable in variable steps from 0 to 80ms  
As for input delay, velocity sensitive Parameter Knobs provide finer adjustment at low levels  
and rapid selection of higher values.  
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High and Low Pass Filters  
LMS-D26  
Out1 Freq Shape  
LPF 2.50k LR24  
c
a
b
a
b
Knob A: Frequency, <<out, 10.0Hz to 25.6kHz, out>>  
Knob B: high pass filter type  
Filter type is selectable from Butterworth, Bessel, Linkwitz-Riley and Hardman. Filter slopes of  
up to 8th order or 48dB / octave are provided. Not all filter types are available in all slopes.  
For example 18dB / octave Linkwitz-Riley filters do not exist.  
The Hardman type filter is always described by its’ order as the filter becomes progressively  
steeper rather than following a linear slope so a dB/octave description is not accurate.  
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Parametric Equalisation  
Eight sections of equalisation are provided in a similar format to the input channel  
equalisation; two shelving filters and six parametric.  
LMS-D26  
Out1 Freq Slope Gain  
EQ>- 100Hz 12dB 0.0dB  
c
a
b
a
b
c
Knob A: Frequency, 10.0Hz to 25.6kHz in variable steps  
Knob B: Slope, 6 to 12dB / octave in 1dB steps  
Knob C: Gain, +/-15dB in 0.2dB steps  
The frequency is specified as point where the filter deviates by 3dB from the gain value.  
LMS-D26  
Out1 Freq Width Gain  
EQ1 100Hz 1.4Q 0.0dB  
c
a
b
a
b
c
Knob A, Centre Frequency, 10.0Hz to 25.6kHz in variable steps  
Knob B, Width, display selectable, Q or BW (Bandwidth)  
BW adjustable from 0.05 to 5 octaves in variable steps  
Q adjustable from 14.2 to 0.2 in variable steps  
Knob C, Gain, +/-15dB in 0.2dB steps  
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TA-500  
Limiters  
LMS-D26  
Out1 Thresh  
LIM 4.0dB  
a
c
b
a
Knob A: Threshold, -40dBu to 20dBu in 0.2dB steps  
A high performance, low distortion limiter is provided on each output. Threshold is user  
adjustable; all other parameters are carefully calculated dependant on configuration to  
provide clean and effective control of signal dynamics.  
Routing  
LMS-D26  
Out1 Source  
Inp A  
c
a
b
a
Knob A: Output source, selectable; Input A, Input B or Sum A+B  
Configures the routing from input to output. This function is only available in mono format  
Presets.  
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TA-500  
Utilities  
Utility functions  
Two utility functions are provided to adjust screen contrast and the display units used for  
parametric equalisation bandwidth.  
The device automatically adjusts for the variations in display contrast as the temperature of  
the LCD changes. The screen contrast utility control sets the base contrast of the screen and  
also allows optimization for a given viewing angle.  
Parametric equalisation width parameters can be displayed in either ‘Q’ or bandwidth,  
expressed in octaves.  
LMS-D26  
Util Screen ParaEQ  
100% BW=Q  
c
a
b
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TA-500  
T-25 AND T-45 HIGH EFFICIENCY AUDIO POWER AMPLIFIERS  
General Features & Facilities  
The T-25 and T-45 are highly efficient, lightweight, rugged high power amplifiers, with many  
original features developed to meet the requirements of modern professional sound  
reinforcement, for both touring and fixed installations. They have been designed with audio  
quality ranking equal first alongside utility and ruggedness.  
The T-25 and T-45 utilise proprietary progressive switching rail output, which enables  
extremely high voltage swings and peak power without compromising sonic quality. Fan  
speed is automatically varied as required to keep the amplifiers within temperature limits.  
Signal limiters are included to protect speakers from clipped signals. The amplifiers include  
full DC and short circuit protection to ensure trouble-free service even in harsh  
environments.  
Two independently controlled and powered channels.  
High continuous power, in excess of 1250 watts per channel into 4 ohms (T-25) and  
2250 watts per channel into 4 ohms (T-45).  
-3dB indicators to ensure accurate level monitoring  
Power reduction control (PRC) allows maximum output level to be set below rated  
power output  
A 10kactively balanced, fully floating input is fitted as standard.  
Front panel display of output device temperature.  
High damping factor, >400 below 1kHz.  
Low noise vari-speed fans for quiet operation.  
Front-panel accessible filter for improved dust collection.  
Consistent reliability and easy serviceability through solid, lightweight construction  
and modular packaging.  
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Front Panel Functions T-25  
Ch. A  
Ch. B  
Mains power rocker switch – applies AC mains power to the amplifier.  
Mains power LED – illuminates when AC power is applied to the amplifier.  
Gain – rotary control which allows the gain of the channel to be adjusted.  
Signal – blue LED indicates signal presence, active from a minimum output level of  
10 watts.  
-3dB – yellow LED is active when the signal is 3dB below the limiting level.  
Limit – amber LED indicates operation of the limiters.  
PRC – green LED indicates when the PRC for that channel has been selected.  
Bridge (BRG) – green LED illuminates when bridge mode is selected.  
Fault (A/P) – red LED indicates protection circuit activity.  
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Front Panel Functions T-45  
Ch. A  
Ch. B  
Mains power rocker switch – applies AC mains power to the amplifier.  
Mains power LED – illuminates when AC power is applied to the amplifier.  
Gain – rotary control which allows the gain of the channel to be adjusted.  
Signal – blue LED indicates signal presence, active from a minimum output level of  
10 watts.  
-3dB – yellow LED is active when the signal is 3dB below the limiting level.  
Limit – amber LED indicates operation of the limiters.  
PRC – green LED indicates when the PRC for that channel has been selected.  
Bridge (BRG) – green LED illuminates when bridge mode is selected.  
Fault (A/P) – red LED indicates protection circuit activity.  
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Mechanical Installation  
When supplied as part of the AMP-890.2 system rack, the amplifiers are pre-installed. If an  
amplifier is removed from the rack for any reason, it is important to re-install it correctly. The  
amplifiers must be supported at the front and rear, as originally supplied. Failure to support  
it adequately may eventually result in vibration-induced metal fatigue of the rack mounting  
ears and such damage will not be covered by the warranty.  
Adequate ventilation is essential, both at the rear of the rack, the sides, and also at the front.  
This should be considered carefully when placing covers around the racks for protection  
from inclement weather at outdoor events, or when using blacks to mask them from view. If  
the venting is inadequate, the amplifier's temperature metering will display this.  
CAUTION: Air emerging from the amplifier's high efficiency heat-exchangers can reach 60°C  
to 70°C. To prevent personal injury or fire, please ensure that people and combustible or  
flammable materials (e.g. plastic waterproofing, newspaper, clothing, costumes, solvents)  
are kept at least 2'/0.6m from the amplifier's exhaust outlets. If venting is inadequate, the hot  
air can adversely affect other equipment, and may soften some thermoplastic enclosures. If  
using plastic coated cables, take care to dress the leads away from the airflow. Professional-  
grade rubber cables are not affected.  
Mains Power  
The T series amplifiers will operate from any international 50 - 60Hz AC mains supply  
between 110-120 V and 220-240 V. Separate models are supplied to match local mains supply  
requirements.  
Powering Up  
When the amplifier is switched on by depressing the black POWER rocker switch, the  
protection circuit will initially activate whilst the circuits stabilise. Assuming no faults are  
detected the POWER LED (and the signal LED if signal is present) will light up after a fewe  
seconds.  
Safety Earthing  
The Green/Yellow wire on the T-25 and T-45’s mains cord must always be connected to the  
electrical installation's safety Earth (or Ground). It is essential for personal safety. The rack  
framework is connected to the same grounding circuit.  
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Voltage Setting  
Your models will be set up at the factory for correct operation on your local voltage supply.  
No further adjustment is necessary.  
Voltage Range  
The minimum supply voltage over which the amplifier will operate is 180V for the 220-240V  
range, and 90V for the 110-120V range. Naturally, maximum power output will be reduced  
accordingly from the published ratings.  
The maximum supply voltage which exceeds safe limits and causes the amplifiers to switch-  
off is in excess of 260 V for 220/240 V range, and 130 V for the 108/120 V range. This is  
however dependent on load impedance and program drive level as mentioned above.  
Obviously, the mains voltage will reach these limits only in exceptional circumstances and  
the A/P (Audio Protect) LED will then flash.  
Audio Connections & Controls  
The amplifiers’ actively balanced, fully-floating input connections are fuss-free, regardless of  
the installation's complexity.  
The incoming 3-pin XLR plug should be connected, with a high grade twin-core sreened  
cable, as follows.  
Pin 1  
Pin 2  
Pin 3  
Screen - connect to shield  
hot (signal +)  
cold (signal -)  
The shield connection to pin 1 at each amplifier input must be maintained under all  
circumstances, as TURBOSOUND will not be responsible for consequential damage arising  
to loudspeakers, etc., should this connection not be made.  
The amplifiers are designed to operate with fully balanced equipment. Ground loops or loss  
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TA-500  
of performance may be experienced if connected to unbalanced sources. If it is unavoidable,  
however, the following wiring convention should be used.  
Pin 1  
Screen - connect to chassis of the unbalanced equipment,  
or left disconnected at the unbalanced end  
Pin 2  
Pin 3  
signal hot  
Signal cold  
Polarity  
In accordance with international standards, T series amplifiers are supplied with Pin 2 hot (+),  
so a positive (+V) input gives a positive (+V) output from the positive (+) output terminals.  
Input Impedance  
Each amplifier channel has an input impedance of 10k, seen between pins 2 & 3 of the XLR.  
When used with the LMS-D6 Loudspeaker Management System, distribution amplifiers are  
not required when a large number of T-25 or T-45 amplifier inputs are driven in parallel.  
Gain and Sensitivity Settings  
Gain settings are changed internally by simple jumper links. Two rows of pins marked - GAIN  
A and GAIN B - are situated on the input PCB (PCB701). A jumper link sets the gain and the  
settings are as follows:  
Link 1 & 2  
Link 3 & 4  
Link 2 & 3  
Gives 32dB gain  
Gives 26dB gain  
Gives approx 37.5dB gain  
NOTE: Factory setting is normally link 1 & 2 = 32dB gain.  
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Setting higher gain does not change the maximum available power but changes the level of  
signal input to achieve maximum power. In any case, provided that the input signal is less  
than 20dBu/7.7V, the built in limiter circuit will prevent distortion within the amplifier.  
The gain should be set to match the signal from the source, e.g. mixer, controller, or  
equaliser.  
Attenuation & Gain Setting  
The front panel gain controls allow precise level settings, and may be used to adjust the  
relative levels of sections of a large system, for example downfills or side seating cover in an  
arena.  
The front panel gain controls are also useful when initially checking a system after it has  
been connected up.  
Note that in BRIDGED mode only the Channel A control is active.  
Output Connections  
A Speakon NL4 connector is provided on each channel.  
Damping Factor  
The T series amplifier outputs provide a high damping factor, typically 400 times at low  
audio frequencies. This damping helps the amplifier to control the loudspeaker drive units,  
provided that the resistance of the intervening cables and connectors is very low. The sonic  
benefits of high damping factor are most pronounced at bass and low-midrange frequencies  
(i.e. 10 to 600Hz) providing a subjectively tighter sound as a result of the improved  
reproduction of transients.  
Amplifier damping factor is degraded by high resistance in the loudspeaker circuits; i.e. thin  
conductors, long output cable runs and tarnished, corroded or loose connections.  
Damping factor is maximised by installing cables containing conductors of large cross-  
sectional area, and by specifying connectors with heavy-duty contacts and waterproof  
covers. The cable sets supplied with Aspect systems are manufactured to a high specification  
with these considerations in mind.  
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Long Speaker Lines  
Whenever loudspeakers are connected to power amplifiers by long cables (above 20'/6m),  
there is invariably an increased risk of high frequency instability. It is aggravated by the  
combination of RF pickup in unshielded cables acting as aerials, and multiple complex  
reactances in the cable and loudspeakers.  
High frequency instability can be avoided by adopting these common sense rules:  
Ensure the input wires are shielded and that the shield is connected to the amplifier's input  
XLR pin 1.  
Do not run output cables next to input signal lines. Keep apart, and preferably cross at right  
angles. If cables have to follow a similar route or path, keep them separated by at least 2 feet  
(0.6m).  
The Cooling System  
The cooling fans respond to temperature sensors within the unit to maintain a safe operating  
temperature. In the event of excessive temperature, the protection circuit will operate,  
disabling the output. The red ‘AUDIO-PROTECT’ (A/P) LED will indicate this condition. (See  
fault indicator.)  
There are 4 fans connected permanently with variable speed and a jumper link to enable  
them from cold.  
Normal dynamic signals will not cause the amplifier to overheat unless the ventilation is  
inadequate. (See installation section and maintenance section.)  
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APPENDIX A: TECHNICAL SPECIFICATIONS  
TA-500  
TA-500t  
TA-500H  
TA-500HM  
Dimensions  
mm (inches)  
977 x 574 x 498  
977 x 574 x 498  
551 x 983 x 498  
551 x 574 x 498  
(38.5 x 22.6 x 19.6)  
(38.5 x 22.6 x 19.6)  
(22.6 x 55.1 x 30.3)  
(21.7 x 22.6 x 19.6)  
Net weight  
52kg (114.4lbs)  
60Hz – 20kHz  
57kg (125.4lbs)  
60Hz – 20kHz  
52kg (114.4lbs)  
60Hz – 20kHz  
37kg (81.4lbs)  
250Hz – 20kHz  
Frequency range  
(±4dB)  
Dispersion  
50°H x 25°V  
50°H x 25°V  
50°H x 25°V  
50°H x 25°V  
Power handling  
(continuous)  
LF: 400 watts  
MF: 200 watts  
HF: 50 watts  
LF: 400 watts  
MF: 200 watts  
HF: 50 watts  
LF: 400 watts  
MF: 200 watts  
HF: 50 watts  
MF: 200 watts  
HF: 50 watts  
Sensitivity (1w@1m)  
LF: 106dB  
MF: 105dB  
HF: 112dB  
LF: 106dB  
MF: 105dB  
HF: 112dB  
LF: 106dB  
MF: 105dB  
HF: 112dB  
MF: 105dB  
HF: 112dB  
Max SPL (max/cont)  
Crossover points  
135dB/141dB  
135dB/141dB  
135dB/141dB  
132dB/136dB  
4k/5k99Hz  
Passive: 250Hz  
Active: 250Hz,  
4k/5k99Hz  
Passive: 250Hz  
Active: 250Hz,  
4k/5k99Hz  
Passive: 250Hz  
Active: 250Hz,  
4k/5k99Hz  
Nominal impedance  
LF: 8 ohms  
LF: 8 ohms  
LF: 8 ohms  
MF: 16 ohms  
HF: 16 ohms  
MF: 16 ohms  
HF: 16 ohms  
MF: 16 ohms  
HF: 16 ohms  
MF: 16 ohms  
HF: 16 ohms  
Construction  
Connectors  
15mm & 18mm  
birch plywood  
15mm & 18mm  
birch plywood  
15mm birch  
plywood  
15mm birch  
plywood  
2 x NL8MP  
1 x NL4MP  
2 x NL8MP  
1 x NL4MP  
2 x NL8MP  
1 x NL4MP  
3 x NL8MP  
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TA-500  
TA-500DP  
TA-500tDP  
TA-500HDP  
Dimensions  
mm (inches)  
977 x 574 x 498  
977 x 574 x 498  
551 x 983 x 498  
(38.5 x 22.6 x 19.6)  
(38.5 x 22.6 x 19.6)  
(22.6 x 55.1 x 30.3)  
Net weight  
54kg (123.2lbs)  
60Hz – 20kHz  
59kg (130lbs)  
60Hz – 20kHz  
54kg (118.8lbs)  
60Hz – 20kHz  
Frequency range  
(±4dB)  
Dispersion  
50°H x 25°V  
50°H x 25°V  
50°H x 25°V  
Max SPL (max/cont)  
Construction  
135dB/141dB  
135dB/141dB  
135dB/141dB  
15mm & 18mm birch  
plywood  
15mm & 18mm birch  
plywood  
15mm birch plywood  
Connectors  
1 x XLR female  
1 x XLR male  
1 x XLR female  
1 x XLR male  
1 x XLR female  
1 x XLR male  
2 x RJ45 network  
1 x Powercon  
2 x RJ45 network  
1 x Powercon  
2 x RJ45 network  
1 x Powercon  
TSW-218  
B18  
Dimensions  
mm (inches)  
574 x 1400 x 770  
768 x 574 x 700  
(22.6” x 55.1” x 30.3”)  
(30.2” x 22.6” x 27.6”)  
Net weight  
110kg (242lbs)  
35Hz – 150Hz  
1200 watts  
104dB  
65kg (143lbs)  
40Hz – 150Hz  
600 watts  
Frequency range (±4dB)  
Power handling (continuous)  
Sensitivity (1w@1m)  
Max SPL (max/cont)  
Nominal impedance  
Construction  
102dB  
135dB/141dB  
4 ohms  
130dB/136dB  
8 ohms  
18mm birch ply  
2 x NL4MP  
18mm birch ply  
2 x NL4MP  
Connectors  
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APPENDIX B: SPARE PARTS LIST  
Stock Code  
07A0255  
Model  
Description  
FG-500T  
Flygear assembly (2 sides inc bolts, springs,  
gaskets and fixings)  
07E008  
07E015  
07B075  
BG-890  
BS-890  
SK-500  
Bolt guide plate  
Captive biscuit  
Screw kit for flygear (replace after service or  
inspection)  
LS1021/2  
LS1527  
LS-1021.2  
LS-1527  
CD-113  
10” High-mid driver  
15” Low-mid driver  
04A9242  
05B1055  
05B3140  
05B9301  
07G0205  
07B055  
07B060  
07B065  
07B070  
Compression driver  
Recone kit  
RC-1021  
RC-1527  
RD-113  
Recone kit  
Replacement diaphragm  
TA-500 grille (with foam, badge and inserts)  
Inter cabinet links  
MG-500  
ICL-500  
FC-500TS  
FC-500TL  
TS-890  
Top chain assembly standard length  
Top chain assembly long  
Tilt strap  
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APPENDIX C: WARRANTY  
All products in this manual are warranted by Turbosound Limited to the original end-user  
purchaser against defects in workmanship and materials used in its manufacture for a period  
of one year on electronics products and two years on loudspeaker products from date of  
shipment to the end user.  
Faults arising from misuse, unauthorised modifications or accidents are not covered by this  
warranty. No other warranty is expressed or implied.  
This warranty does not affect any statutory rights of the purchaser.  
Should any fault develop with a component of your Turbosound system the faulty unit  
should be sent, in its original packaging, to the supplier or your local authorised Turbosound  
dealer with the shipping prepaid.  
You should include a written statement listing the faults found, and the product serial  
number must be quoted ion all correspondence relating to the claim.  
IMPORTANT: We recommend you record your purchase information here for future  
reference.  
Dealers Name: .........................................................................................................  
Address: ..................................................................................................................  
Phone No: ...............................................................................................................  
Invoice/Receipt No./Date . ......................................................................................  
Serial numbers  
...............................................................................................  
...............................................................................................  
...............................................................................................  
...............................................................................................  
In keeping with our policy of continual improvement, Turbosound Limited reserves the right  
to alter specifications without prior notice.  
TA-500 user manual  
Page 72  
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user manual  
TA-500  
Turbosound Limited  
Star Road  
Partridge Green  
West Sussex RH13 8RY  
United Kingdom  
TA-500 user manual  
Page 73  
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