LOUROE ELECTRONICS Verifact A Audio Monitoring System Instruction Manual
- June 3, 2024
- LOUROE ELECTRONICS
Table of Contents
ELECTRONICS Verifact A Audio Monitoring System
Instruction Manual
PH: (818)994-6498
FAX: (818)994-6458
techsupport@louroe.com
www.louroe.com
Verifact A Audio Monitoring System
AUDIO MONITORING SYSTEM
INSTALLATION AND OPERATING INSTRUCTIONS
DESCRIPTION
The Model Verifact® A is an omni-directional, low impedance, electret
condenser microphone with built-in preamp. It can pick up normal sounds
approximately 15 ft. away, or within a 30 ft. diameter circle. Verifact A
produces line level output and can be located up to 1,000′ from the Louroe
base station. It is primarily designed for ceiling mounting but can also be
installed on any type of flat surface. The Verifact® A is compatible with all
Louroe Audio Base Stations or Louroe Audio InterfaceAdapters. 
NOTE: Verifact® A Microphone is NOT recommended for outdoor use
or in areas with high moisture content.
SPECIFICATIONS
| ■ Sensitivity | -45 dBV/Pa 1 Pa = 94 dB SPL |
|---|---|
| ■ Frequency Response | 50 Hz to 15 kHz |
| ■ Output | Line Level (0 dBV, 600Q @ 1 kHz) |
| ■ Current Drain | 10mA |
| ■ Supply Voltage | 12Vdc |
| ■ Microphone Housing | High Impact Anti-Static ABS |
| ■ Dimensions | 4″ Dia x 1 1 /2″ H |
| ■ Weight Shipping Weight | 3.5 oz 1 lb |
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.
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 five years (60
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.
INSTALLATION AND OPERATING INSTRUCTIONS
ELECTRICAL CONNECTION The Model A is cylindrical, 4″ dia. x 11/2″ H, and
has four mounting holes for surface mounting to a ceiling or other flat
surface. It should be positioned so that the microphone is 4′ to 8′ from the
area of desired coverage.
MICROPHONE CONNECTION A 3-pin terminal block is located on the back of
the microphone housing, marked A, B, C. A represents +12 Vdc Power B
represents Audio Output C represents Ground If using West Penn 452 or
equivalent with same color code, connect:
- Red wire (12 Vdc) connects to terminal A of microphone terminal block
- Black wire (audio out) connects to terminal B of microphone terminal block
- Bare wire (ground) connects to terminal C of microphone terminal block
CONNECTING VERIFACT® A 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:
- Red wire from microphone connects to pin A of Base Station (12Vdc)
- Black wire from microphone connects to pin B of Base Station (Audio Output)
- Bare wire from microphone connects to pin C of Base Station (Ground)
CONNECTING VERIFACT® A MICROPHONE TO OTHER AUDIO DEVICES.
If a Louroe audio base station is not used and microphone is being connected
directly to another source 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. Wire from terminal B should be shielded.
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 sensitivity switch can be moved from “N” position to “L”
position to help reduce background noise. “N”is normal, “L” is low
INSTALLATION TIPS
- Use overall shielded audio cable only. West Penn 452, Belden 8451 or equivalent. UNSHIELDED CABLE IS NOT SATISFACTORY FOR SOUND SYSTEMS.
- 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.
- Avoid installing microphone near air vents, air conditioners, fans and other equipment that generate high sound and air pressure.
- 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.
- 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.
TO LOUROE BASE STATION OR TO OTHER LOUROE AUDIO RECORDING DEVICES (IF-1,
IF-2, IF-4, IF-8 ETC.)
CONNECTING A LOUROE MICROPHONE DIRECTLY TO AN IP CAMERA, ENCODER OR DVR
WITH 3.5mm MONO AUDIO INPUT
MICROPHONE TERMINAL BLOCK 
OTHER PLUGS WIRING CONFIGURATION 
LOUROE ELECTRONICS®
6 9 5 5 VA LJ E A N AVENUE
VAN NUYS, CA 91406
TEL 818-994-6498
FAX (818)994-6458
website: www.louroe.com
e-mail: sales@louroe.com