OWI AMP-04TRP User Manual

Page 4 of 10

Description: 
 

The optional amplifier is housed in an all-metal cap with electronics inside. It acts  as a 

convenient heat sink for the internal amplifier. While an AC 12 volt power supply is provided, it 
is capable of being powered by a DC or AC power supply with a voltage not to exceed 14 volts. 
A power supply of up to 5 Amps is suitable. The amplifier accepts a balanced audio input for 
maximum noise rejection. 

 
It has a high quality powder coat providing maximum durability. The power kit comes 

with mounting screws. 

Amplifier Specifications: 

Power  

25 

watts 

Frequency response 

  20 Hz to 30kHz +0-2dB 

Noise Floor 

  Better than 90 dB 

Distortion 

 

 

          Better than .1 % at 10 watts 

Input 

  Line input -10 to +4dB 

Input configuration 

  Differential, Balanced and DC isolated 

Volume control 

  Step for mechanical level memory 

Protection 

  Short circuit, heat and over current 

Power supply 

  12 volts UL Listed 

Maximum power supply wire length  400 ft with 16 gauge wire. 
Multiple amplifiers 

 

Yes, Line input in parallel 

Each amplifier may power 

 

Four non-amplified speakers total 

Input/Output 

 

Each amplifier has a line level input and output 

Connector type 

  Phoenix Connector 

Conduit Entry 

  Two ½” in conduit access holes with knock outs 

Typical Line level sources 

CD player, Audio mixer, Background music service, 
Telephone PBX dry audio pair hooked to the balanced +,- 
input. There is no shield on a telephone input. 

Hook up for additional horns 

Wired  through  the conduit entry, use the 4 way binding 
posts for additional high level speakers hooked up to the 
amplifier. 

For four horns 

Wire  them  series  parallel to achieve a 4 ohm load 
impedance. 

Color  

White 

Warranty 

   1 

Year