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Front Panel Indicators:

 

Power amplifier ACL (Automatic Clip Limiter) / Mute All LED

 

Power amplifier Signal present LED

 

Power On LED

Rear Panel Controls:

 

Channel 1 Gain Control

 

Channel 1 Line/Mic gain switch

 

Channel 1 Mute Threshold Control

 

Channel 2 Gain Control

 Muting: 

Signal above threshold on Input 1 mutes input 2.  Threshold can be adjusted or defeated.

 

“Mute All” switch input

.  Shorting mute connections mutes all audio.

 

Line Voltage Selector Switch

 (100-120 VAC/220-240 VAC)

 

Power switch

Power Requirements:

 

65 Watts, 120 V AC or 220 -240 VAC 50/60 Hz

Weight:

 

15.4 lbs. (7kg)

Dimensions:

 

19” x 13.25” x 3.45” with rack ears (483 mm x 337 mm x 88 mm)

 

17” x 13.25” x 3.45” without rack ears (432 mm x 337 mm x 88 mm)

Color: 

 

 Black

Architectural and Engineering Specifications

The mixer/amplifier shall have an electronically balanced line/mic input and unbalanced auxiliary input.  The back panel shall 

include two input level controls. Front panel indicators shall include power on, signal presence at the amplifier, ACL ™ status and 

Mute All.  It shall have an internal power amplifier with a rated output of 300 Watts. The power switch shall be on the rear panel 

along with the detachable IEC cord, fuse holder.  There shall be a Line/Mic gain switch and Euro-type connector for the channel 

1 input.   There shall be dual summing RCA jacks for channel two.  Channel 1 shall have a continuously variable mute threshold 

control on the rear panel. Setting this control fully clockwise shall defeat the Channel 1 mute function.  The mute threshold 

sensitivity for Channel 1 shall be increased as the control is turned clockwise. When the signal level in Channel 1 exceeds the 

mute threshold, Channels 2 shall be muted. There shall be a external mute switch input that shall mute the amplifier when the 

contacts are shorted. The unit shall have a line voltage selector switch for operation at 100 - 120 VAC or 220 - 240 V 50/60 Hz.  

The amplifier shall have a direct 4 Ohm output, and 3 transformer outputs – 100 Volt, 70 Volt, and 25 Volt. The amplifier shall 

include clipping protection via ACL ™ . The unit shall be W x D x H  19” W x 13.25” D x 3.45” H with rack ears (483 mm W x 337 

mm D x 88 mm H) and 17” W x 13.25” D x 3.45” H without rack ears (432 mm W x 337 mm D x 88 mm H).  The unit shall be 

called the Crest Audio Professional Installation Series Power Amplifier model IPA 2300.

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