Louroe Electronics MLA-4 Käyttöohje
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The MLA-4 is a microphone mixer with four audio inputs and one audio output. It is designed to combine up to
four microphones (or up to four speaker/microphones) to expand the listening area of an audio zone. The
MLA-4 is located between the microphones (or speaker/microphones) and the Louroe base station. In
addition, it has a line driver amplifier that allows for runs up to 5,000 ft. between the MLA-4 and the Louroe
base station and up to 1,000 ft. between the MLA-4 and the remote microphone (or speaker/microphone) for a
total of 6,000 ft.
MLA-4
MICROPHONE MIXER
INSTALLATION AND OPERATING INSTRUCTIONS
WIRING REQUIREMENTS:
Microphone Only:
Louroe Verifact A, B, C, D, D-V, E, K or L-DT
Microphone/Speaker
Louroe Model TLI, TLM, TLMC, TLO, TLSP
4 Conductor consisting of:
+
2 Conductor , 20 gauge with shielded
22 gauge drain (microphone
connection)
+
2 Conductor , 18 gauge unshielded
(speaker connection)
All in the same jacket
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6955 VALJEAN AVE, VAN NUYS, CA 91406
PH: (818)994-6498 / FAX: (818)994-6458
/ www.louroe.comtechsupport@louroe.com
®
®
Page 1 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: sales@louroe.com
(818)
®
mla_4_inst_3/15
2 Conductor cable, 22 shielded
gauge with a 24 gauge drain wire
NOTE: Unshielded cable is not
satisfactory for audio systems
West Penn 452 or equivalent
MICROPHONE CONNECTION:
At the top part of the PC board are 4 Terminal blocks marked 1 through 4 (for 4 zones). Each terminal
block has 5 Pins marked - A, B, C, SP and G . Bring in wire from remote microphone (or
speaker/microphone) and connect as follows:
Pin A (12 Vdc) from remote microphone to Pin A of MIC 1 terminal block of MLA-4(red wire)
Pin B (audio) from remote microphone to Pin B of MIC 1 terminal block of MLA-4(black wire)
Pin C (ground) from remote microphone to Pin C of MIC 1 terminal block of MLA-4.(bare wire)
Repeat connections for ZONE 2 to ZONE 4.
Use 2 Cond Shielded cable (see page1) if only microphones are to be connected.
SPEAKER CONNECTION (used only if microphone/speaker units are being connected):
Green wire from speaker to Pin SP of MIC1 terminal block of MLA-4
White wire from speaker to Pin G of MIC 1 terminal block of MLA-4
Repeat this connections for the rest of the zones.
Use 4 Cond shielded cable such as West Penn 356 (see page1) if microphone/speaker units are used.
POWER REQUIREMENTS
For Cable runs 1,000’ and under
If the total distance from the remote microphone (or speaker/microphone) to the MLA-4 Mixer and on to the
Louroe Base Station is under 1,000 ft., the MLA-4 will receive power from the base station. No power is
required at the MLA-4.
For Cable runs 1,000 to 5,000’
If cable run between MLA-4 and Louroe Base Station is over 1,000 ft and up to 5,000 ft, 12 Vdc power is
required. An input jack for power is located on MLA-4 chassis. For this length of run, MLA-4 should be
mounted within 1,000’ of the microphone.
IMPORTANT NOTE
1. If Model MLA-4 Mixer is to be powered for a cable run between 1,000 ft. and 5,000 ft. from the Louroe base
station, do not use terminal “A” connection between the MLA-4 and the Louroe base station.
2 For cable runs that exceed 1000 ft or up to 5,000 ft, MLA-4 Mixer should not be positioned more then 1,000
ft. from the Louroe microphone or speaker/microphone.
NOTE: If alternate power supply is
used, USE POWER DO NOT
SUPPLY IN BASE STATION
Page 2 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: sales@louroe.com
(818)
®
INSTALLATION AND OPERATING INSTRUCTIONS
mla_4_inst_3/15
OUTPUT CONNECTION FROM MLA-4 MIXER TO LOUROE BASE STATION
(Note: Power supply of the MLA-4 must not be used when connecting to a Louroe base station.)
MICROPHONE CONNECTION:
Located at the bottom of the PC Board is a single 3-pin terminal block marked “AUDIO OUT” and
contains three pins marked A, B, C using the shielded portion of recommended cable connect as
follows:
Red wire goes to Pin “A” (12Vdc)
Black wire goes to Pin “B” (Audio Output)
Bare wire goes to Pin “C” (ground)
SPEAKER CONNECTION:
Applies only if speaker/microphones are being connected. If remote units are microphones only, skip
this step and use the recommended cable shown in page 1.
The speaker input connection utilizes the 2-pin terminal block marked “SPEAKER”.
Pin marked “SP” of MLA-4 (green wire) connects to Pin “SP” also of terminal block at the base
station
Pin marked “G” of MLA-4 (white wire) connects to Pin “G” of terminal block at the base station
For connections to the speaker inputs of the Louroe base station, please refer to the specific
installation instructions for that model.
OUTPUT CONNECTION FROM MLA-4 MIXER TO OTHER RECEIVING DEVICES SUCH AS
DVRS, ETC.
(Note: Power supply of the MLA-4 must be used when connecting to receivers other than Louroe base station
Using the recommended cable (2 Cond. Shielded 22 AWG) see page 2 for connecting the microphone
to the input terminal blocks (Zone 1 to 4) MLA-4, matching Pin A to A, B to B and C to C.
The MLA-4 has 2 types of audio outputs.
When using the 3-pin terminal block, connect 2 wires to Pin B and Pin C. Pin B is positive audio which
can be connected to the positive of the audio input of the receiving device. Pin C is ground and can be
connected to the ground of the audio input of the receiver.
The other output is an RCA jack which can be connected to an RCA type input of the receiving device.
Plug in power supply (included) to +12Vdc power jack.
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: sales@louroe.com
(818)
®
INSTALLATION AND OPERATING INSTRUCTIONS
mla_4_inst_3/15
Tuotetiedot
| Merkki: | Louroe Electronics |
| Kategoria: | Ei luokiteltu |
| Malli: | MLA-4 |
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