Manual

TROUBLESHOOTING
I. Overload Indicator[5] illuminated.
a. When the Overload Indicator is illuminated, it is an indication that there is a short in wiring
connections to the microphone. Check the following:
1) Check that each wire is connected to their proper terminals See steps 1 and 2 of
connections page 4.
2) Check that there are no reversed or crossed wire connections.
3) Check that none of the wires are touching each other or shorted to ground.
b. Turn ON power back to the unit after checking all wiring connections. If the Overload
Indicator[5] no longer lights, proceed to step 2 of the operation. If the Overload Indicator
remains illuminated, remove the microphone connections (power still ON) one at a time until the
Overload Indicator turns OFF. After removing a wire, wait a few seconds before removing the
next wire. This will give the overload protection circuit time to reset itself. The last wire
disconnected that turned OFF the Overload Indicator is the one that has a short. Check for
shorts on the wire and remote microphone.
II. No audio present.
a. Using a DC Voltmeter, check the voltage across terminal “A” and “C” (”A” positive; “C” ground) of
the Mic 3-Pin Terminal Block[12]. It should read 12V. The microphone requires 12Vdc to work.
1) Check connections to the microphone.
b. Remove the wire connected to the “B” terminal of the Mic 3-Pin Terminal Block. Using an AC
meter (set to lowest voltage range), check the presence of audio from the microphone. Place the
meter leads between wire removed (positive) and terminal “C” (ground). Generate some loud
noise close to the remote microphone while observing the meter reading. If audio is present, the
meter reading will start to fluctuate. If there is no movement, the remote microphone is defective.
Call factory for assistance.
Factory assistance is available between 8:30 AM to 4:00 PM Pacific time. Call [phone].
SPECIFICATIONS (AP-2, AP-4 and AP-8)
Input sensitivity
(from remote mic)
0.78Vrms
Monitor power output 1.5W @ 8
Audio input impedance 10k
Freq. response (flat) 100 Hz to 10kHz
Audio frequency
response (enhanced)
-20 dB @ 200 Hz to
+5dB @ 2kHz
Power input 12 Vdc, 500mA
Dimensions 8 ½"W x 9 ½"L x 2 1/8"H
Headphone impedance 8 to 600
Weight 3.5 lbs (1.6 kg)
Audio line output impedance
600W or higher
INSTALLATION AND OPERATING INSTRUCTIONS
PAGE 6 of 6
LOUROE ELECTRONICS 6955 VALJEAN AVENUE, VAN NUYS, CA 91406 TEL [phone] FAX [phone]
Website: www.louroe.com Email: [e-mail]
AP SERIES 1/08