Page 1
®
6955 VALJEAN AVE, VAN NUYS, CA 91406
PH: (818)994-6498 / FAX: (818)994-6458
/ www.louroe.com[email protected]
®
VERIFACT DVGC
AUDIO MONITORING SYSTEM
INSTALLATION AND OPERATING INSTRUCTIONS
DESCRIPTION
The Verifact DVGC is an omni-directional, low
®
impedance, electret condenser microphone with built-in
preamp and automatic gain control. It can pick up
normal sounds approximately 25 ft. away, or within a 50
ft. diameter circle. It’s built-in limiter prevents the output
signal to be overdriven thus minimizing distortion.
Verifact D-V-AGC produces line level output (0 dB)
®
and can be located up to 1,000’ from the Louroe base
station. The microphone has a potentiometer to adjust
the output gain up to +10dB. It is primarily designed for
flush mounting to a wall. It has 16 Ga stainless steel
face plate and hooded audio port for providing
protection to the microphone. Fits into a standard single
gang electrical box (not included). The Verifact DVGC
®
is compatible with all Louroe Audio Base Stations or
Louroe Audio Interface Adapters.
VERIFACT DVGC
FRONT
R
U
T
E
D
C
A
F
U
N
A
M
®
BACK
I
N
T
H
E
SPECIFICATIONS
Microphone Sensitivity
Frequency response
Output
Current drain
Supply voltage 12 Vdc
Microphone housing 16Ga Stainless steel face plate
Output gain
Dimensions
Weight
Shipping Weight
LOUROE ELECTRONICS warrants that at the time of shipment products manufactured by LOUROE ELECTRONICS to be free of defects in material and workmanship.
Should a defect appear within one year (12 months) from date of shipment, LOUROE ELECTRONICS will, at its sole discretion, repair or replace the defective equipment.
This equipment shall not be accepted for repair or return without prior notification by LOUROE ELECTRONICS .
This warranty does not extend to any Louroe product that has been subjected to improper or incorrect installation, misuse, accident, or in violation of installation
instructions provided by LOUROE ELECTRONICS.
Returned shipments to LOUROE ELECTRONICS shall be at customer’s expense. LOUROE ELECTRONICS will return the equipment prepaid via best way.
®
-45dB
50 Hz to 8 kHz
Line Level (0 dB, 1kW at 1 Khz )
10 mA
+10dB
4” " dia x 1 ½ H
4 oz
1 lb
WARRANTY
®
®
IMPORTANT NOTICE
When this equipment is used as part of an
audio monitoring system, the law requires
that the public be given notice of AUDIO
MONITORING ON THE PREMISES. A
deca l noti ce is included with each
microphone shipped.
Federal Law References:
Federal Regulations, US Code, Title 18.
Crime and Criminal Procedure, Sec 2510.
®
®
®
AUDIO
MONITORING
These Premises
On
®
LOUROE ELECTRONICS 6 9 5 5 VA L J E A N AVENUE, VAN NUYS, CA 91406 TEL (818) 994-6498 FAX 994-6458
(818)
website: www.louroe.com e-mail: [email protected]
PAGE 1 OF 4
DVgc_mic-inst_12/14
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INSTALLATION AND OPERATING INSTRUCTIONS
MECHANICAL INSTALLATION
The Verifact DVGC is design to be installed in a single gang electrical box for flush or surface mounting to a
wall or ceiling. It should be positioned 3 to 6 ft from the area of desired coverage. Ceiling heights in excess of
10 ft should be avoided.
MICROPHONE CONNECTION:
A 3-pin terminal block is located on the back of the microphone housing, marked A, B, C.
If using West Penn 452 or equivalent with same color code, connect:
CONNECTING VERIFACT DVGC MICROPHONE TO A LOUROE BASE STATION OR AUDIO
INTERFACE ADAPTER
All Louroe audio base stations and Interface Adapters have corresponding terminal blocks marked A, B, C.
Connect other end of cable as follows:
®
A represents +12 Vdc Power
B represents Audio Output
C represents Ground
1. Red wire (12 Vdc) connects to terminal A of microphone terminal block
2. Black wire (audio out) connects to terminal B of microphone terminal block
3. Bare wire (ground) connects to terminal C of microphone terminal block
®
1. Red wire from microphone connects to pin A of Base Station (12Vdc)
2. Black wire from microphone connects to pin B of Base Station (Audio Output)
3. Bare wire from microphone connects to pin C of Base Station (Ground)
CONNECTING VERIFACT DVGC MICROPHONE TO OTHER AUDIO DEVICES.
®
If a Louroe audio base station is not used and microphone is being connected directly to another receiver from
other manufacturers, 12 Vdc power must be applied to terminals A and C. (A is positive, C is negative).
Terminals B and C of microphone (C is common) go to the “Audio In” or “Line in” of the audio source. We
recommend shielded cable connections for terminal B and C (See last page for interconnection diagram)
INSTALLATION TIP: If area to be monitored for audio is noisy or has background disturbances, the
microphone should be positioned close to the subject (4’ - 8’) if possible. Also, the microphone output can be
lowered by adjusting the gain control potentiometer. Rotating clockwise will increase the gain;
counterclockwise decreases the gain. The factory setting is 0dB output.
INSTALLATION TIPS
1. Use 2 Cond 22AWG 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 APR-1 and 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 APR-1 to avoid acoustical feedback.
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]
Page 2 of 4
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DVgc_mic-inst_12/14
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RED
INSTALLATION AND OPERATING INSTRUCTIONS
MICROPHONE GAIN ADJUSTMENT
The microphone has an audio output gain potentiometer.
Microphone is always shipped with a 0dB output. If it’s necessary
to change the gain of the microphone, insert a small screwdriver
into the potentiometer rotate clockwise to increase or
counterclockwise to decrease. Maximum gain is +10dB
B
C
A
WIRING REQUIREMENTS
2 Conductor shielded cable, 22
gauge with a 24 gauge drain
wire.
NOTE: Unshielded cable is not
satisfactory for audio
systems.
BARE
BLACK
A = +12Vdc (RED)
B = Audio (BLACK)
C = Ground (BARE)
BLACK
RED
B
A
TO LOUROE BASE STATION
TO OTHER LOUROE AUDIO INTERFACE DEVICES
(IF-1, IF-2, IF-4, IF-8 ETC.)
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]
C
OR
BARE
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CONNECTING A LOUROE MICROPHONE DIRECTLY
TO AN IP CAMERA, ENCODER OR DVR WITH 3.5mm
12 Vdc POWER SUPPLY
INSTALLATION AND OPERATING INSTRUCTIONS
MONO AUDIO INPUT
MICROPHONE TERMINAL BLOCK
A
B
C
+12 Vdc
+
_
GROUND
A = 12Vdc Power
B = Audio Output
C = Ground
LOOP “C” WIRE THRU OPENING, THEN SOLDER
“B” WIRE
3.5mm MONO PLUG REMOVED
FROM JACKET
TO LINE LEVEL INPUT OF IP CAMERA OR
DVR WITH 3.5mm MONO AUDIO INPUT
OTHER PLUGS WIRING CONFIGURATION
Black Wire
Red Wire
S
T
E
R
E
O
Audio In
of receiver
3.5mm Stereo CONNECTION
Red Wire
Black Wire
R
C
A
Audio In
of receiver
RCA CONNECTION
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]
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