Louroe Electronics VERIFACT L-DT Manuel utilisateur
L-DT_mic_inst_4/11
The LOUROE Model L-DT Microphone is designed for desktop applications in
interview rooms, speech therapy labs, cashier booths, etc. It contains 2
microphones facing opposite directions. Model L-DT is a low impedance, electret
condenser microphone and produces line level output.
Wire color code: Red 12Vdc
Black Audio output
Bare Ground
If using wiring from other manufacturers color code may vary.
VERIFACT™L-DT
MICROPHONE
INSTALLATION AND OPERATING INSTRUCTIONS
VERIFACT™ L-DT
SPECIFICATIONS
Sensitivity
(microphone & preamp)
Frequency response
Output
Current drain
80 dB SPL input
provides 0.254V RMS
40 Hz to 15 kHz ± 1 dB
4 mA
Supply voltage 12 Vdc
Weight (net) 0.5 Lbs (0.2 kg)
Output impedance
Microphone housing High impact ABS
Dimensions - US
- Metric 12 cm L x 7.6 cm W x 4.4 cm H
4 ¾”L x 3”W x 1 ¾”H
600Ωunbalanced
Line Level (0 dB @ 1000Ω)
6955 VALJEAN AVE, VAN NUYS, CA 91406
PH: (818)994-6498 / FAX: (818)994-6458
®
MICROPHONE CONNECTION
RED wire (12 Vdc) goes to terminal A
BLACK wire (Audio Out) goes to terminal B
BARE wire (ground) goes to terminal C
CONNECTION TO LOUROE RECEIVING DEVICE
(Audio Base Station or Audio Interface Adapter)
All Louroe receiving devices (base stations, interface adapters) have a corresponding terminal block marked A, B, C.
Observing wire color code, connect other end of cable matching:
A to A
B to B
C to C
Also refer to installation instructions for the specific model base station or interface adapter. Maximum cable run between
microphone and receiving device is 1,000 ft. (305 m).
The L-DT can be placed directly on a desktop or any flat surface. It has a weighted bottom with rubber padding for
positive grip. For best results, persons should be 2 - 4 ft. (0.6 m - 1.2 m) from the microphone.
MICROPHONE POSITIONING
Model L-DT connects directly to any Louroe base station or audio interface adapter. A terminal block is located on the
back of Model L-DT Microphone housing, marked A, B, C.
A is 12 Vdc (power)
B is Audio Output
C is Ground
All Louroe base stations and audio interface adapters have a corresponding terminal block (A, B, C) for each zone. Using
recommended wiring, connect microphone to the receiving device as follows:
ELECTRICAL CONNECTION
INSTALLATION AND OPERATING INSTRUCTIONS
Page 2 of 4
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)
®
LD-T_mic-inst_4/11
C
B
A
BLACK
BARE
RED
To Louroe
Audio Base
Station or Audio
Interface Adapter
BARE (C)
A B C
L
N
BLACK (B)
RED (A)
LOUROE
MODEL L-DT MICROPHONE
A = +12Vdc
B = Audioput
C = Ground
MICROPHONE SENSITIVITY SWITCH
For special installations that require less microphone sensitivity, a sensitivity switch is located on
the back side of the Model L-DT near the terminal strip. An opening is marked N and L. N is
normal and L is low (-6 dB output into 1KΩ). With a small screwdriver, move slide switch to L
position. Model L-DT is always shipped with sensitivity switch in the N position. Do not change
unless necessary.
2 Conductor shielded cable, 22
gauge with a 24 gauge drain wire
NOTE: Unshielded cable is not
satisfactory for audio systems
WIRING REQUIREMENTS
West Penn 452 or equivalent
All Louroe Microphones, Audio
Base Stations and Audio
Interface Adapters contain 3-pin
terminal blocks marked A, B, C.
Microphone Terminal
Block Identitier
Bottom View of L-DT
INSTALLATION AND OPERATING INSTRUCTIONS
Page 3 of 4
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)
®
LD-T_mic-inst_4/11
MANUFACTURED
IN THE
Page 4 of 4
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)
®
LD-T_mic-inst_4/11
WARRANTY
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.
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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
decal notice is included with each
microphone shipped.
Federal Law References:
Federal Regulations, US Code, Title 18.
Crime and Criminal Procedure, Sec 2510.
AUDIO
MONITORING
On
These Premises
®
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