Owners manual
A 3120
2.1 Aktivmodul
Mounting of the A 3120
The A 3120 amplifier module is designed for the use in an amplified subwoofer box. The backside of the cabinet is the
designated place for the mounting of the A 3120. IMPORTANT! The distance of the A 3120 to any wall must be more than
5 cm. To mount the A 3120 in an cabinet a mounting hole with the dimensions 150 x 220 mm is needed. Because the A
3120 is not airtight a separation chamber is needed (s. fig. 2). The A 3120 has then to be mounted screws. The wire with
Dear customer. You have purchased the
MPA
A 3120, a high quality
subwoofer amplifier module. Please read the following instructions
carefully.
It is ONLY allowed to use the amplifier if it is mounted in an cabinet and a speaker is connected
correctly ! It is NOT allowed to use the amplifier in moisted rooms or if the amplifier module is wet.
Servicing of the amplifier ONLY by qualified personel!
Frequency response subwoofer / satellites
plug on the inner side fo the A 3120
must be connected using the enclosed
500 mm wire through the chamber to
the cabinets speaker unit.
Connecting A 3120 to a source.
The A 3120 can be connected
symmetrical to a source (for example a
Mixer) using a 3 pin XLR-connector
(fig. 1) as well as an RCA plug
(asymmetrical connection, fig. 1).
Connection of satellites.
The A 3120 is equipped with 2 power
®
outputs for Speakon compatible
plugs. Each of these outputs provides
120 W R.M.S. at 4 ohms. The
minimum impedance of connected
speakers must be 4 ohms or higher.
First operation:
For the first installation the LEVEL
control MAIN should be adjust to MIN
as well as the LEVEL control SUB. After
connecting all necessary cables to the
A 3120 including satellites, the source
can be turned to on. Now you can turn
the POWER switch of the A 3120 to
ON .Turn the LEVEL control MAIN
clockwise to the prefered volume. Then
turn the LEVEL control SUB clockwise
until bass level is okay. The relation
between main level and sub level is
now constant also when modifying the
LEVEL control MAIN.
Switching of the A 3120.
The A 3120 should be switched ON
after all the other devices connected
and it should be switched to OFF at
first.
Konz Vertrieb: speaker trade
Neuenhofer Str. 42-44, 42657 Solingen, Germany, Tel: 0212 / 38226-0, Fax: 0212 / 38226-40 Internet: www.mivoc.com
Satelliten
Subwoofer
Mischpult / Mixer
CD-Player etc.
Output Sat
Output Sat
Input XLR / Cinch
Input XLR / Cinch
1