Louroe Electronics ASK-4 101B - Manual (Page 3)

SENSITIVITY SWITCH OF VERIFACT B MICROPHONE
For special installations that require less microphone sensitivity or where there is background noise, a sensitivity switch is
mounted to the microphone pre-amp (PC Board) and has two positions, N and L:
N represents normal sensitivity (0dB ouput into 1kΩ )
L represents low sensitivity (-6dB output into 1kΩ )
Louroe VERIFACT microphones are always shipped with the sensitivity switch in normal (N) position. Do not change
unless necessary. To change the sensitivity setting, use a small screwdriver and move slide switch from N to L position.
The switch is mounted on the back side of the microphone housing.
NOTE REGARDING INTERFACING ASK-4 #101 WITH A DVR OR PC SOUNDCARD
The APR-1 Audio Base Station of ASK-4 #101B is compatible with all commercial DVR’s and PC Soundcards
that accept line level input (0dB@600Ω
or higher). An RCA cable is included with the kit for connecting Audio
Out to Audio In of DVR. If DVR’s audio input is a 3.5mm jack, an RCA to 3.5mm adapter (not supplied) must
be attached to the plug that connects to DVR’s Audio Input. Check with DVR’s specifications to determine if
the audio input requires a stereo or mono 3.5mm plug.
PC soundcards contain a standard 3.5mm stereo Audio Input or Line Input. Do not use Mic Input of
soundcard. Louroe microphones are line level (0dB@600Ω
) and will overdrive the Mic Input. Use “Audio
Input” or Line Input” of the soundcard.
INSTALLATION AND OPERATING INSTRUCTIONS
N I E D
U
A
SA
M
+12 Vdc INPUT OUTPUT
AUDIO
B A C
MIC INPUT
VAN NUYS, CA
[10] [11] [12] [13]
[10] Power Jack Accepts 12Vdc power from Model AD-1 Power Supply
(included with APR-1 Audio Base Station). AD-1 has a 90 ° 2.1mm female plug.
[11] AUDIO IN Jack (RCA) Accepts audio playback from an external source (DVR/VCR).
Audio playback is produced through the speaker. The Push for Playback[7]
must be “IN” during audio playback and “OUT” when
not used for playback.
[12] AUDIO OUT Jack (RCA) Provides audio output and connection to a DVR, VCR, etc.
[13] Audio Terminal Block A 3-pin terminal block marked A, B, C.
Accepts wiring from the remote Louroe™ Microphone.
A is 12Vdc Power
B is Audio
C is Ground
REAR PANEL LAYOUT OF APR-1
Page 3 of 8
LOUROE ELECTRONICS 6 9 5 5 VA L J E A N AVENUE, VAN NUYS, CA 91406 TEL (818) 994-6498 FAX 994-6458
website: www.louroe.com e-mail: [email protected]
(818) ®
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ASK4_101B_inst 2/15