MD Powered Series
ModularDesign™ Loudspeakers
MD-FP122/64r | MD-FP122/66 | MD-FP122/94r | MD-FP122/96r | MD-FP122/124r
MD-FP152/64r | MD-FP152/66 | MD-FP152/94r | MD-FP152/96r | MD-FP152/124r
Features of the MD Powered Series
Features of the Patented* PM1000 Power Module
• PM1000 Power Module offer state-of-the-art integration of
amplification and signal processing in an extremely compact,
lightweight package
• PM1000 provides 1000 watts of continuous power, 800 watts to
the LF transducer and 200 W to the HF compression driver
• Class D switching technology
• All full range models feature a rotatable high-frequency
horn, enabling them to be utilized in a vertical or horizontal
configuration
• 120V and 230V models available
• Accepts balanced XLR input connector with
pass-through connector
• Available in either black or white finishes (handles on
black only)
• Integrated active crossover & equalization electronics
• Internal limiters prevent over driving the system
• All full range and low-frequency enclosures employ the same
overall dimensions and identical attachment point locations
• All models constructed in a trapezoidal design of multi-ply
birch with a powder coated steel grille
The MD (ModularDesign) Series Powered
Designed as a family of modular, arrayable
loudspeakers, the full-range self-powered MD
of the front surface of the enclosures forms
a contiguous cylindrical surface for a clean
and aesthetically pleasing appearance. Each
enclosure is equipped with a total of fifteen
3/8"-16 threaded attachment points offering
the installer tremendous flexibility in suspension
and mounting.
Loudspeakers combine the superb loudspeaker
performance of MD with the latest generation
of QSC’s legendary amplification and signal
processing technologies. For more detail about
the PM modules, see the rear page.
family includes six models: five models with
12" LF sections, and five with 15" LF sections.
Nominalcoveragepatternsof60˚x40°,60˚x60°
90° x 40°, 90˚ x 60° and 120° x 40° are available
with either low-frequency complement. In
addition, two low-frequency only MD Powered
systems, the MD-LP115 and MD-LP118, share
the common form factor of the full-range
systems. All share the same 35" tall, 30°
trapezoidal enclosure as their passive MD
Series counterparts.
MD Powered offers exceptional performance
in a wide variety of applications, including
houses of worship, performing arts facilities,
hotels, casinos, night clubs, and sporting
facilities. Specifying MD Powered is appropriate
anywhere there is a need for dependable high
performance loudspeakers with predictable
coverage, extended frequency response and the
precision of integrated power amplification and
signal processing. For design/build contractors
and electroacoustic design consultants, the MD
Powered Series offers an effective solution to
the myriad of challenges encountered in the
design and implementation of permanently
installed sound reinforcement systems.
Low frequency transducers feature technically
advanced 4" voice coils assembled with
proprietary high temperature adhesives, vented
magnet assemblies and highly optimized motor
design to provide excellent dynamic range,
flat frequency response and a very low
distortion figure.
The form factor common to all MD loudspeaker
models makes creating full range or combined
full range/low-frequency clusters painless.
The enclosures are designed with 30° angles;
wall-to-wall tight packing enclosures splay the
60° x 40° horns perfectly and provide uniform
coverage in any multiple of 60° to 360°. No
gaps or spacers are required and the radial form
High frequency compression drivers feature
a Neodymium magnet motor structure and
65 mm (2.5") aluminum voice coil and titanium
diaphragm plus a pole piece mounted copper
shorting cap for extended HF response.
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15" Loudspeaker Specifications
MD-FP152/64r
MD-FP152/66
MD-FP152/94r
MD-FP152/96r
MD-FP152/124r
Configuration
15" 2-way full-range loudspeaker
Transducers
15" transducer with 4"
voice coil, ferrite magnet
15" transducer with 4"
voice coil, ferrite magnet
15" transducer with 4"
voice coil, ferrite magnet
15" transducer with 4"
voice coil, ferrite magnet
15" transducer with 4"
voice coil, ferrite magnet
Low-frequency
60° x 40° rotatable horn
with 1.4" exit dia., 2.5"
voice coil, neodymium
magnet
60° x 60° horn with 1.4"
exit dia., 2.5" voice coil,
neodymium magnet
90° x 40° rotatable horn
with 1.4" exit dia., 2.5"
voice coil, neodymium
magnet
90° x 60° rotatable horn
with 1.4" exit dia., 2.5"
voice coil, neodymium
magnet
120° x 40° rotatable horn
with 1.4" exit dia., 2.5"
voice coil, neodymium
magnet
High-frequency
Frequency Response ( 3dB)1
Frequency Range (-10 dB)1
Maximum Output
Continuous2
50 Hz - 17.5 kHz
45 Hz - 18 kHz
50 Hz - 19.5 kHz
45 Hz - 20 kHz
50 Hz - 19.5 kHz
45 Hz - 20 kHz
50 Hz - 19 kHz
45 Hz - 20 kHz
50 Hz - 19 kHz
45 Hz - 20 kHz
129 dB
127 dB
128 dB
126 dB
127 dB
Peak3
139 dB
138 dB
138 dB
136 dB
137 dB
Nominal Coverage (-6 dB)4
Amplifier Module
Power Output5
60° x 40° rotatable
60° x 60°
90° x 40° rotatable
90° x 60° rotatable
120° x 40° rotatable
LF: 800 W / HF: 200 W
1.2 Vrms (+4 dBu)
7.5 Vrms (+19.5 dBu)
20k ohms
Input Sensitivity
Input Clipping
Input Impedance
Input Connector
Balanced XLR female (Pin 1: Earth, Pin 2: +, Pin 3: -)
Output (loop-thru) Connector XLR male wired in parallel with input
AC Power Connector
Controls
Neutrik® Powercon (10' (3 m) #18 AWG 120V North American cordset)
Gain control, 100 Hz high-pass filter, Power on/off
Indicators
Clip/Limit (red LED) / Signal (green LED) / AC Power (blue LED)
Thermal limiting, on/off muting, AC inrush current limiting
Available in 120V or 230V versions (+15% -40%)
Protection
Operating Voltages
AC Power Requirements6
Pink Noise
Idle < 0.5 A (< 100 BTU waste heat) • 1/8 power 2.5 A (570 BTU waste heat) • 1/3 power 5.0 A (1380 BTU waste heat)
(6 dB crest factor)
Full Power 15.0 A (4010 BTU waste heat)
Typical Program Material
at Full Power
2.5 A (570 BTU waste heat)
Enclosure
Suspension Points
Finish
15 load-rated attachment points that accept 3/8"-16 threaded hardware
Wear resistant textured paint. Available in black and white (handles on black only)
Powder-coated perforated steel with black foam backing
35" x 20.5" x 18" (889 mm x 521 mm x 457 mm)
88 lbs (40 kg)
Grille
Dimensions (HWD)
Weight
All amplifiers are FCC class B (conducted and radiated emissions), UL/CE listed
1) Free Field Response (4pi)
2) Calculated based on sensitivity and continuous amplifier power at onset of limiting
3) Calculated based on sensitivity of transducers and peak output capability of amplifier
4) Coverage: Included angle between -6 dB points, 500 to 3.2k Hz, taken at ISO preferred one-third octave intervals, or for an otherwise specified frequency range
5) Amplifier Power: The maximum sustained power at less than 1% clipping, averaged over the intended frequency range
6) Current values are for 120V, for 230V operation divide by 2
Specifications subject to change without notice.
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Dimensions
MD Powered Series
Loudspeakers
Side
Front
Back
Top
18"
457 mm
35"
889 mm
60°
Handles shown included
on black versions only
20.5"
521 mm
PM Power Modules
QSC’s PM series are the most
much as 700 watts (as in QSC’s HPR speakers),
but still requires a large, heavy heat sink.
pristine across the entire frequency range.
QSC has finally opened the door to combining
the horsepower potential of Class D with no
compromise audio performance.
compact, lightweight and
efficient loudspeaker power
modules currently available.
They have been specifically
developed to meet the
headroom and voltage swing
requirements of high-end
Existing amplifier technologies forced
compromises upon the loudspeaker designer
that QSC engineers found unacceptable. The
resulting specification called for an amplifier
package measuring no more than 4.4" x
14.6" x 7" (112 mm x 371 mm x 178 mm)
and weighing only 8 lbs (3.6 kg) yet capable
of continuously delivering double or triple
the amount of power traditionally feasible
in a package of this size. Our engineers
combined the lessons QSC has learned from
three generations of PowerLight technology
power supplies with a unique, patent pending
approach to “Class D” amplification to create
the PM series power modules.
For the MD powered models, speaker response
is fine-tuned with high order crossover slopes,
signal alignment and LF rolloffs as well as
multiple parametric equalizer sections. The
internal processing also includes long-term
power limiting, allowing higher levels of
amplifier drive to the speaker without damaging
overloads.
professional
loudspeaker
systems.ThePM1000features
two channels producing 800
watts (LF) and 200 watts
(HF) respectively, while the
PM1400 delivers 1400 watts
into a single channel.
The PM modules are built on a solid aluminum,
three-sided extrusion that functions as a chassis,
heat sink and mounting flange. Because of
their high conversion efficiency, PM modules
normally dissipate only about 25 to 50 watts
of input power as heat, and are basically a
passively cooled design. However, in order
to keep the exposed surfaces within required
temperature limits, and prevent thermal
overload in extremely hot environments, a
temperature controlled fan is mounted to the
heat-sink assembly and comes on only when
heat sink temperature reaches 122º F (50 C),
ensuring that “the show goes on” even under
extreme conditions.
Users familiar with existing powered speaker
technology expect to see a large heat sink,
taking up most of the speaker’s rear panel. Such
products run hot at full power, and may not
be capable of sustained high output operation
in all positions or climate conditions due to
thermal limitations.
Until now available Class D solutions have been
constrained by voltage limitations, and thus
remained below the 500 watt (at 8 ohms)
barrier, and many designs have also suffered
from imperfect audio quality. QSC has broken
through these barriers, with ratings exceeding
800 watts into standard 8 ohm loads, and 1400
watts into 4 ohms. Peak voltages can reach 120
volts, at up to 30 amps of current (3600 watts
of “peak power”). At the same time, advanced
internal error-correction keeps audio quality
The linear amplifier technology utilized in most
current powered loudspeaker designs is capable
of acceptable audio performance, but inherent
inefficiencies limit the maximum power of
these systems to the 300 to 500 watt range.
Multi-tier linear technology can extend this to as
Specifications subject to change without notice.
QSC and the QSC logo are registered trademarks of QSC Audio Products Inc. in the U.S. Patent and Trademark office and other countries. ModularDesign is a trademark
of QSC Audio Products Inc. All other trademarks are the property of their respective owners. *US Patent #7,279,967. Other patents may apply or be pending.
1675 MacArthur Boulevard • Costa Mesa, CA 92626 • Ph: 800/854-4079 or 714/957-7100 • Fax: 714/754-6174
qscaudio.com
MD Powered Spec Sheet 12/04/07
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