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IWA 250 - USER MANUAL 

 
 

TABLE OF CONTENTS

 

 
Front Panel Features 
 
Applications 
 
Specifications & Block Diagram 
 
Warranty 

pgs. 2 & 3

pgs. 4 & 5

pg. 6

 

 

INTRODUCTION 

 

The 

IWA 250

 In-Wall Powered Mixer provides an 8 input/2 output mixer plus 

emergency page interrupt, a 9-band graphic equalizer, and a 250 Watt power 
amplifier with outputs for standard and distributed speaker systems.  Optional
VCA remote control cards may be added for controlling mixer input/output
levels.  Designed for in-wall or surface mounting, with integral security cover, 
the IWA 250 is UL/C-UL listed and is covered by a five-year warranty. 

 

 

six balanced microphone/line level mixer input channels 

 

two balanced/summing line level mixer input channels 

 

high & low tone controls on each mixer input channel 

 

independent main & aux level controls on each channel 

 

trim control & peak indicator on each mic/line input channel 

 

additional balanced line input for emergency page interrupt 

 

main & aux mixer outputs with master level controls 

 

mixer functions provided on screw-driver adjustable controls 

 

optional VCA cards for remote control of input/output levels 

 

9-band graphic equalization integrated at amplifier input 

 

patch points provided for mixer outputs & equalizer input 

 

mixer inputs & outputs on front panel plug-in barrier strips 

 

output taps for standard and distributed speaker systems 

 

+48 Volt phantom power selectable for microphone inputs 

 

"in-wall" or "surface-mount" chassis with security cover 

 

UL

 and 

C-UL

 listed 

 

covered by Biamp Systems' five-year warranty 

 

 

IMPORTANT SAFETY INFORMATION 

Read these instructions. 
 
Keep these instructions. 
 
Heed all warnings. 
 
Follow all instructions. 
 
Do not use this apparatus near water. 
 
Clean only with a dry cloth. 
 
Do not block any of the ventilation openings. 
 
Install in accordance with the manufacturers instructions. 
 
WARNING - To reduce the risk of electric shock, do not expose 
this apparatus to rain or moisture. 
 
Unplug this apparatus during lightning storms or when unused 
for long periods of time. 
 
Apparatus shall not be exposed to dripping or splashing and no 
objects filled with liquids, such as vases, shall be placed on the 
apparatus. 

 

Do not install near any heat sources such as radiators, heat 
registers, stoves, or other apparatus (including amplifiers) that 
produce heat. 
 
Do not defeat the safety purpose of the polarized or grounding-
type plug.  A polarized plug has two blades with one wider than 
the other.  A grounding type plug has two blades and a third 
grounding prong.  The wide blade or the third prong are provided 
for your safety.  When the provided plug does not fit into your 
outlet, consult an electrician for replacement of the obsolete 
outlet. 
 
Protect the power cord from being walked on or pinched 
particularly at plugs, convenience receptacles, and the point 
where they exit from the apparatus. 
 
Refer all servicing to qualified service personnel.  Servicing is 
required when the apparatus has been damaged in any way, 
such as power-supply cord or plug is damaged, liquid has been 
spilled or objects have fallen into the apparatus, the apparatus 
has been exposed to rain or moisture, does not operate 
normally, or has been dropped. 

 

Explanation of safety related markings and symbols which appear on the outside of the apparatus. 

 

 

Lightning Bolt:  Hazardous Live voltages present when this unit is in operation.  Do not touch terminals marked with this 
symbol while the unit is connected to live power. 
 

 

Exclamation Point:  Replace components (i.e. fuses) only with the values specified by the manufacturer.  Failure to do so will 
compromise safe operation of this unit. 
 

CAUTION

RISK OF ELECTRICAL SHOCK.

DO NOT OPEN.

 

CAUTION:  Opening the unit enclosure will place operator at risk of injury due to electric shock. 

 

Содержание IWA250

Страница 1: ...tall in accordance with the manufacturers instructions WARNING To reduce the risk of electric shock do not expose this apparatus to rain or moisture Unplug this apparatus during lightning storms or wh...

Страница 2: ...s to the Main Out connector see below High These screw driver controls set the high frequency equalization Treble for the channels High equalization is a shelving type filter which provides 12dB of ga...

Страница 3: ...n Main Out and Main EQ In routes signal from the Main Out control to the Main Equalizer and the Main Amplifier Signal processing may be inserted between the mixer and the equalizer by first removing t...

Страница 4: ...15 15 15 15 15 15 15 15 line mic line mic line mic line mic line mic line mic main high low gain gain gain gain gain gain peak peak peak peak peak peak peak peak peak active main out main EQ in common...

Страница 5: ...ic line mic main high low gain gain gain gain gain gain peak peak peak peak peak peak peak peak peak active main out main EQ in common aux main aux out main out aux out override input main out OFF HPF...

Страница 6: ...ack box Weight chassis security cover in wall back box surface mount back box 250 watts 90dB 0 2 1 0 0 35 0 1dB 600 ohms 20k ohms 200 ohms 10k ohms 12dB 50Hz 12dB 10kHz 15dB 64Hz 125Hz 250Hz 500Hz 1kH...

Страница 7: ...repairs or installed in any manner that does not comply with BIAMP Systems recommendations 4 Electro mechanical fans electrolytic capacitors and normal wear and tear of items such as paint knobs handl...

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