MPA A 3120 Owner'S Manual Download Page 3

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

Summary of Contents for A 3120

Page 1: ...an das Kabel auf der Innenseite des A 3120 angeschlossen Anschluss einer Quelle an das A 3120 Das A 3120 bietet die Möglichkeit sowohl eines symmetrischen Anschlusses an eine Quelle z B Mischpult mit einem dreipoligen XLR Steckers als auch asym metrisch mit Cinch Steckern Abb 1 Anschluss der Satelliten Das A 3120 verfügt über 2 Speakon kompatible Anschlüsse für Satelliten links rechts Abb 1 Jeder ...

Page 2: ...sprecherausgang Mindest impedanz 4 Ohm Belegt sind die Anschlüsse 1 1 2 SUB PHASE Phasenumkehrschalter zur Anpassung der Phasenlage des Subwoofers 0 180 an die Satelliten bei un günstiger Aufstellung 1 2 3 5 6 7 8 9 75 330 280 Abmessungen für Montageausschnitt und Kammer 2 Ein Ausschalten des Moduls Das Modul sollte grundsätzlich als letztes Gerät ein und als erstes ausgeschaltet werden Bei einges...

Page 3: ...ng 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...

Page 4: ...LEFT RIGHT Speakon compatible speaker output Minimum impe dance speaker 4 ohms Used pins are 1 1 2 SUB PHASE Phase invertation switch to invert the Phase of the Sub woofer 0 180 if necessary due to an difficult installtion If A 3120 is switched to ON and a connected device is switched a resulting switch knack can be transfered to the speakers with a high level This can lead to a damage of the conn...

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