Nady Systems Music Mixer MPM 8175x User Manual

OWNER’S MANUAL  
MPM 8175x  
8 CHANNEL POWERED MIXER  
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WARNING  
An equilateral triangle enclosing a lightning flash/arrowhead symbol is  
intended to alert the user to the presence of uninsulated “dangerous  
voltage” within the product’s enclosure which may be of sufficient  
magnitude to constitute a risk of electric shock.  
ATTENTION: RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR  
An equilateral triangle enclosing an exclamation point is intended to alert  
the user to the presence of important operating and service instructions in  
the literature enclosed with this unit.  
IMPORTANT SAFETY INSTRUCTIONS  
When using this electronic device, basic precautions should always be taken, including the following:  
1. Read all instructions before using the product.  
2. Do not use this product near water (e.g., near a bathtub, washbowl, kitchen sink, in a wet basement, or near a swimming  
pool, etc.).  
3. This product should be used only with a cart or stand that will keep it level and stable and prevent wobbling.  
4. This product, in combination with headphones or speakers, may be capable of producing sound levels that could cause  
permanent hearing loss. Do not operate for a long period of time at a high volume level or at a level that is uncomfortable.  
If you experience any hearing loss or ringing in the ears, you should consult an audiologist.  
5. The product should be positioned so that proper ventilation is maintained.  
6. The product should be located away from heat sources such as radiators, heat vents, or other devices  
(including amplifiers) that produce heat.  
7. The product should be connected to a power supply only of the type described in the operating instructions or as marked on the  
product. Replace the fuse only with one of the specified type, size, and correct rating.  
8. The power supply cord should: (1) be undamaged, (2) never share an outlet or extension cord with other devices so that the  
outlet’s or extension cord’s power rating is exceeded, and (3) never be left plugged into the outlet when not being used for  
a long period of time.  
9. Care should be taken so that objects do not fall into, and liquids are not spilled through, the enclosure’s openings.  
10. The product should be serviced by qualified service personnel if:  
A.  
B.  
C.  
D.  
E.  
The power supply cord or the plug has been damaged.  
Objects have fallen into, or liquid has been spilled onto the product.  
The product has been exposed to rain.  
The product does not appear to operate normally or exhibits a marked change in performance.  
The product has been dropped, or the enclosure damaged.  
11. Do not attempt to service the product beyond what is described in the user maintenance instructions. All other servicing should  
be referred to qualified service personnel.  
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INSTALLATION  
To ensure years of enjoyment from your NADY AUDIO MPM 8175x, please read and understand this manual thoroughly before  
using the unit.  
INSpECTION  
Your MPM 8175x was carefully packed at the factory in packaging designed to protect the units in shipment. Before installing and using  
your unit, carefully examine the packaging and all contents for any signs of physical damage that may have occurred in transit.  
(Note: Nady Systems is not responsible for shipping damage. If the unit is damaged, do not return to us, but notify your dealer and the  
shipping company immediately to make a claim. Such claims must be made by the consignee in a timely manner.)  
CONTENTS:  
• Instruction manual  
• MPM 8175x (verify that the unit’s serial number is same as shown on shipping carton)  
• AC Power cord  
• Warranty Card  
pOWER CONNECTION  
The MPM 8175x has an internal power supply and is designed to operate from an external AC source. Power requirements for electri-  
cal equipment differ from area to area. Be sure to confirm that the voltage selected by the voltage selector switch on the back panel is  
proper for your area (120VAC/60 Hz or 230VAC/50Hz) per the information below:  
Europe (except UK): 230V, 50Hz  
UK and Australia: 240V, 50Hz  
USA and Canada: 120V, 60 Hz  
For other areas, please check with local authorities.  
When ready to operate, plug the AC cord into the power source. Make sure that the unit is turned off before connecting to the AC power  
source to avoid possible loud transients that can damage your speakers or your ears, especially when monitoring with head-phones.  
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FRONT CONNECTIONS  
(2)  
(1)  
(8) (9)  
(3)  
(4)  
(5)  
(6b) (6c)(6a)(7)  
FRONT pANEL  
Note: 1 through 5 below are referenced to Channel 1. The other 7 Channels are identical.  
(6) DIGITAL DELAY  
(1)  
LOW EQ  
The signal from the input channels, processed by the built-in  
digital delay will feed to the master output. There are three knobs  
here to control the effect of the delay.  
(6a) SWITCH  
The control shelving response giving 15dB of boost or cut at  
80Hz. Add warmth to vocals or extra punch to guitars, drums  
and synths by turning to the right. Turn to the left to reduce stage  
rumble, hum or to improve a mushy sound.  
This push button switches the delay effect ON/OFF.  
(6b) LEVEL  
(2)  
HIGH EQ  
This knob adjusts the mix level of the effect sound.  
(6c) TIME (ms)  
Turn to the right to boost high frequencies, adding crispness too  
percussion from drum machines, cymbals and synths. Turn to  
the left to cut these frequencies, reducing sibilance or hiss. The  
control has a shelving response giving 15dB of boost or cut at  
12kHz. .  
This knob selects 80ms, 120ms, 160ms, or 200ms of  
delay as desired for your intended effect.  
(7)  
POWER ON LED INDICATOR  
Indicates when the unit is ON.  
(3)  
LEVEL CONTROL  
The Level Control determines the proportion of the channel signal  
(8)  
TAPE IN CONTROL  
in the mix, and provides a clear visual indication of channel level.  
This knob adjusts the level of signal from the TAPE IN (10) to the  
Main bus.  
(4)  
MIC/LINE INPUTS  
The MIC Input is via an XLR connector. Please use a low imped-  
(9)  
MASTER CONTROL  
ance microphone and a properly wired cable for best results.  
This adjusts the signal level of the Main bus. This is the signal  
that is output to the speakers.  
The LINE Input connection is made via a 1/4” TRS jack. This In-  
put Is balanced and can accommodate either a Mic or Line level  
Input source.  
(5)  
DIGITAL DELAY (DD)  
This knob determines the signal level which will be sent to the  
built-in DIGITAL DELAY Effect (6) control  
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REAR CONNECTIONS  
(14)  
(11)  
(12)  
(10)  
(15)  
(13)  
impedance will degrade performance and may harm the  
amp. Damage to the amp caused by connecting less than a 4  
ohms speaker load is NOT covered by the warranty.  
REAR pANEL  
(10) TAPE IN AND TAPE OUT  
The TAPE IN allows cassette recorders or CD players to be  
added to the Main output. The RECORD OUTPUT, with TAPE  
RCA jacks, provides signal output to a recording deck or home  
audio equipment. The nominal output level and impedance are  
-10dBV/600 ohms.  
(15) MAIN OUT/AMP IN  
This unbalanced insert point is a break between the main out  
and the mixer main signal and the main amplifier. This insert is  
a 1/4” TRS phone jack that is normally bypassed. When a 1/4”  
TRS phone plug is inserted, the signal path is broken. Depending  
on the wiring of the plug inserted into this jack, the MPM 8175x  
can be used as either a mixer for a power amplifier or as a power  
amplifier for an external input line level signal from a preamp or  
mixer. Alternatively the jack can be used as an insert point for an  
external effects device to process the output signal from the mixer  
section of the MPM 8175x and return it pre the power amplifier  
(11) POWER SWITCH  
Turns the unit ON or OFF. Always turn level controls down before  
turning on the unit.  
(12) VOLTAGE SELECTOR SWITCH  
For selecting the proper voltage (115/230VAC) to match the  
power supply in your area.  
Note: To avoid damage to your unit, always make sure this switch  
is set to the correct supply voltage. Damage caused by improper  
use is not covered by the warranty.  
(13) POWER CONNECTOR WITH FUSE HOLDER  
This standard IEC power cord receptacle is used to connect  
the AC power to your unit. It features a built-in fuse holder for  
a 5X20mm, (4A/250V for 115VAC, and 2A/250V for 230VAC  
operation) fast-blow fuse. If the fuse continuously blows, shut off  
the unit and have it serviced by qualified service personnel.  
(14) MONO SPEAKER OUTPUTS  
These 1/4” (6.3mm) jacks are daisy-chained together internally  
and powered by the mono amplifier output stage. Use speaker  
cables to connect these jacks to your speaker cabinets.  
CAUTION: The minimum allowed total impedance connected  
to the mono amplifier is 4 ohms ( 8 ohms per output).  
Connecting speaker loads with less than 4 ohms total  
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AppLICATIONS  
SPEAKERS  
FRONT OF HOUSE SPEAKERS  
AUDIO CASSETTE  
DVD/CD PLAYER  
8Ω  
8Ω  
VOCAL MIC  
Guitar  
MIC LEVEL SOURCES  
KEYBOARD,SYNTHESIZER,SAMPLER  
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AppLICATIONS  
8
8
8
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SpECIFICATIONS  
POWER AMP OUTPUT  
Total Impedance ......................................................................................................................................................................... 100W  
Total Impedance ......................................................................................................................................................................... 175W  
INPUTS  
1/4” TRS balanced/unbalanced mic/line level..........................................................................................................................................8  
XLR balanced mic level............................................................................................................................................................................8  
RCA tape input.........................................................................................................................................................................................2  
CHANNELS  
Level ...................................................................................................................................................................................Rotary Control  
Effect ..................................................................................................................................................................................Rotary Control  
Low EQ ..................................................................................................................................................................................80Hz ±15dB  
Hi EQ....................................................................................................................................................................................12KHz ±15dB  
MASTER SECTION  
Master Volume.....................................................................................................................................................................Rotary Control  
Delay On/Off................................................................................................................................................................Push Button Switch  
Digital Delay Level ..............................................................................................................................................................Rotary Control  
Digital Delay Time (80mS, 120mS, 160mS, 200mS)...........................................................................................4-position Rotary Switch  
AUDIO  
S/N Ratio ...................................................................................................................................................................................... >120dB  
THD Power output, 20Hz to 20KHz........................................................................................................................<0.1%@100W/4 ohms  
CROSSTALK (1KHz @ 0dBu, channel in to master output)  
Channel fader down ...................................................................................................................................................................... <-65dB  
FREQUENCY RESPONSE (Mic input to output)  
Line level o/p @ +4dBu into 600Ω .....................................................................................................................................................±2dB  
Power amp o/p 1 watt into 8Ω............................................................................................................................................................±2dB  
SENSITIVITY @ MIXER OUTPUT +4dBu with Master and channels controls set to MID  
Mic/Line..................................................................................................................................................................................-42dB/-22dB  
Tape in.............................................................................................................................................................................................. -10dB  
MAX INPUT LEVEL  
XLR.................................................................................................................................................................................................... -5dB  
1/4” ................................................................................................................................................................................................. +16dB  
MICROPHONE PREAMP E.I.N. (150( Terminated, max. Gain) ............................................................................................. <-120dBm  
POWER CONSUMPTION................................................................................................................................................................ 200W  
POWER REQUIREMENTS.............................................................................................................105-125VAC, 220-240VAC, 50-60 Hz  
FUSE..............................................................................5x20mm glass type 4A/250V for 115VAC, 2A/250V for 230VAC, fast-blow fuse  
DIMENSIONS (H x W x D).....................................................................................................5.25”x 19.25”x 9.5” (13.3 x 48.9 x 24.1 cm)  
WEIGHT ..........................................................................................................................................................................19.3 lbs. (8.8 kg)  
The specifications above are correct at the time of printing of this manual. For improvement purposes, all specifications for this unit,  
including design and appearance, are subject to change without prior notice.  
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NOTES  
10  
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SERVICE FOR YOUR NADY AUDIO PRODUCT  
(U.S.) Should your NADY AUDIO product require service, please contact the Nady Service Department via telephone  
at (510) 652-2411, or e-mail at [email protected].  
(International) For service, please contact the NADY AUDIO distributor in your country through the dealer from  
whom you purchased this product.  
DO NOT ATTEMPT TO SERVICE THIS UNIT  
YOURSELF AS IT CAN BE DANGEROUS AND  
WILL ALSO VOID THE WARRANTY.  
NADY SYSTEMS, INC. • 6701 SHELLMOUND STREET, EMERYVILLE, CA 94608  
Tel: 510.652.2411 • Fax: 510.652.5075 • www.nady.com  
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