Manual
CONNECTING MODEL D OR D-V MICROPHONE TO OTHER AUDIO SOURCES
If a Louroe audio base station is not used and microphone is to be connected
directly to another audio source, use the following procedure:
1. Apply 12 Vdc power (100mA minimum) to PC board’s terminals A and C. A is positive, C
is ground.
2. Using a single conductor shielded cable, 22 gauge with a 24 gauge drain wire, connect
shielded wire to terminal B and drain wire to terminal C (C is common).
3. Run other end of cable to the audio source. If audio input is an RCA connection, solder
on an RCA connector with wire from terminal B of microphone going to the tip of the RCA
plug, and wire from terminal C going to the sleeve of the plug. Connect RCA plug into
“audio in” of the audio source. If connection to the audio source is a terminal block or
strip, refer to audio source’s instructions for proper connection.
or interface adapter
INSTALLATION TIP: If area to be monitored for audio is noisy or has background disturbances,
the microphone should be positioned close to the subject (2’ - 6’) if possible.
MICROPHONE SENSITIVITY SWITCH
The microphone pre-amp (PC board) contains a sensitivity switch with two positions:
N represents normal sensitivity (zero dB @ 1,000W)
L represents lower sensitivity (-6 dB @ 1,000W)
Microphone is always shipped in the N position. For less microphone sensitivity, move slide switch to L position. Do
not change unless required.
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TROUBLE SHOOTING
Microphone inoperative:
A) Incorrect wiring of terminals A and C
B) Short or open connections in shielded cable
C) Faulty microphone
LOUROE ELECTRONICS 6 9 5 5 VA L J E A N AVENUE, VAN NUYS, CA 91406 TEL (818) 994-6498 FAX (818)994-6458
Website: www.louroe.com Email: sales@louroe.com
INSTALLATION AND OPERATING INSTRUCTIONS
INSTALLATION TIPS
1. Use overall shielded audio cable only. West Penn 452, Belden 8451 or equivalent.
UNSHIELDED CABLE IS NOT SATISFACTORY FOR SOUND SYSTEMS.
2. When used at a cash register checkout, microphone should be installed closer to the customer rather than the cash
register, as the drawer sound could dominate the recording. It should be installed closest to the
area to be monitored and documented.
3. Avoid installing microphone near air vents, air conditioners, fans and other equipment that generate
high sound and air pressure.
4. If microphone is installed in a police interview room, room should be conditioned with any type of carpeting, acoustical
ceiling tiles, acoustical foam, etc. to reduce echo. This will enhance the quality of live and recorded audio.
5. The microphone should have a barrier or solid wall between them in order to avoid audio
feedback, especially when they are in close proximity to each other. If no barrier, microphone should be at least 25’ from
the base station to avoid acoustical feedback.
D/D-V MIC 1/08