Sound Fields IR-89, User Manual

9.

Speaker Outputs (25W x 4, 4-8

Ω

) 

The receiver has 4 speaker output terminals, each one driven by a separate power 
amplifier (25W). These connectors are used to connect the cable from each speaker 
(euro-block) to one of these euro-block speaker terminals. When connect 2speakers in a 
terminal, use 8

Ω

speakers to prevent amplifier burn down. 

10.

9-Band Graphic Equalizer 
The equalizer affects the output to the speakers and the line output. The sliding controls 
adjust the levels of the various audio frequencies. This allows the installer to adjust the 
overall tone of the sound coming through the speakers and to make the whole system 
achieve optimum sound quality. 

11.

Page Input 
Use cable to connect the school PA system to the PAGE INPUT of the receiver in the 
rear panel. When the school P.A. system broadcasts an announcement, the signal from 
the P.A. system mutes the inputs to the receiver and passes the page announcement 
signal through the receiver amplifier and to the speakers. Four different kinds of page 
input selectors. The knob on top of the page input controls the volume level of incoming 
page. 

12.

Line Output 
This Line output can be used to transmit the audio to another device, such as an 
amplifier, a recorder or an assistive learning system. 

13.

Audio Inputs (RCA connector) 
AUX: Receive stereo signal from any auxiliary device. 
CD / DVD: Receive stereo signal from CD/DVD device. 
TV / VCR: Receive stereo signal from TV/VCR device. 
COMPUTER: Receive stereo signal from COMPUTER device. 

14.

Sensor Inputs (RCA connector) 
There are 3 inputs for infrared sensors on the back of the receiver. The sensors are 
connected to the receiver via coaxial cable with F type connectors.    At lease one sensor 
must be connected for the infrared receiver to function. Connected additional sensors 
improve reception and cover lager space. When the sensor is connected to the receiver 
and the receiver in turned on, the red light on the sensor will illuminate, indicating that 
the sensor is active. 

15.

DC IN (19V) 
Plug the DC19V, 4.75A power supply into this jack. 

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