www.cleveracoustics.co.uk
MA 4120 480W Mixer Amplifier
User Manual
3
Product overview & technical specifications
The MA 4120 MKII 4 Zone Mixer Amplifier is ideal for systems where multiple zones are required. Designed for
use in venues such as schools, churches, entertainment venues or commercial buildings, the MA 4120 MKII
offers multi zone audio routing coupled with four independent 120Wrms amplifiers. The MA 4120 MKII 4 zone
mixer amplifier has five input channels, each with selectable independent output routing, input gain, treble bass
and volume controls. Input channels 1 thru 4 are via XLR/Jack combo sockets, each with Line/Mic/Mic+Phantom
selection, input channel 5 is via a stereo line level input.
Four output zones each feature LED VU indicators, monitor selection and volume controls with outputs for line
level, low impedance (4-8Ω) and constant voltage speaker systems (25V, 75V & 100V). The on-board monitor
facility, selectable for each zone output features both a line level audio and 1W 8Ω loudspeaker output suitable for
driving a loudspeaker local to the MA 4120 MKII zone mixer.
• Four output zones each with level control and monitor selection
• Four independent 120Wrms amplifiers outputting to 4-8Ω or 25, 70, 100V
• Five input channels:
Channels 1-4 are via XLR/Jack combo sockets,
each with Line/Mic/Mic+Phantom selection (48V)
Channels 5 is via phono (RCA) stereo line level input
• 3U, 19” rackmount chassis
• Input gain, treble, bass and level controls
• Selectable output routing for all input channels
• Monitor function with level control and LED VU meter
• Output for monitor loudspeaker: 1W, 8Ω
• Headphone output with level control
• Telephone/paging input (zone selectable) with adjustable level
• Priority contact for music mute facility (CH4 and 5 mute, CH1-3 priority)
• VOX operated priority for TEL input
• CH1 input automatic VOX priority (internal jumper for priority override)
• Telephone and MIC1 (music mute facility)
• Input channel mute switches on front panel
• Line level MIX output
• Temperature controlled, variable speed fan cooling
MA 4120 MKII 480W 4 Zone Mixer Amplifier
MA 4120 MKII Mixer Amplifier
Z1
VOL
BASS
MUTE
TREBLE
GAIN
Z3
Z2
Z4
CH 1
0
1
2
3
4
5
6
7
8
9
10
-10
+10
-10
+10
-10
+10
Z1
VOL
BASS
MUTE
TREBLE
GAIN
Z3
Z2
Z4
CH 2
0
1
2
3
4
5
6
7
8
9
10
-10
+10
-10
+10
-10
+10
Z1
VOL
BASS
MUTE
TREBLE
GAIN
Z3
Z2
Z4
CH 3
0
1
2
3
4
5
6
7
8
9
10
-10
+10
-10
+10
-10
+10
Z1
VOL
BASS
MUTE
TREBLE
GAIN
Z3
Z2
Z4
CH 4
0
1
2
3
4
5
6
7
8
9
10
-10
+10
-10
+10
-10
+10
Z1
VOL
BASS
MUTE
TREBLE
GAIN
Z3
Z2
Z4
CH 5
-10
+10
-10
+10
-10
+10
0
10
PHONE
PHONE
VOLUME
MONITOR
VOLUME
0
10
VOLUME
ZONE 3
MONITOR
0
1
2
3
4
5
6
7
8
9
10
ZONE 1
ZONE 2
ZONE 4
VOLUME
MONITOR
0
1
2
3
4
5
6
7
8
9
10
VOLUME
MONITOR
0
1
2
3
4
5
6
7
8
9
10
VOLUME
MONITOR
0
1
2
3
4
5
6
7
8
9
10
ON
OFF
POWER
0
1
2
3
4
5
6
7
8
9
10
CH4
CH2
CH1
CH3
L
R
CH5
LINE
POWER INPUT:
110-240V~50/60Hz
110-120V~60Hz - FUSE: T12A 250V
220-240V~50/60Hz - FUSE: T6.3A 250V
SERIAL NUMBER
www.cleveracoustics.co.uk
WARNING:
TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK.
DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN. NO USER
SERVICABLE PARTS INSIDE
MONITOR
LINE OUTPUT
G
+
MONITOR
1W 8Ω
PRIORITY
–
+
TEL PAGING
COM
GND
HOT
110-120V~
220-240V~
PHANTOM
LINE
MIC
PHANTOM
LINE
MIC
PHANTOM
LINE
MIC
PHANTOM
LINE
MIC
TEL
VOLUME
ZONE
LINE OUT - BAL/UNBAL
POWER AMP OUTPUT
COM
4Ω
8Ω
25V
70V
100V
ZONE 1
G
–
+
LINE OUT - BAL/UNBAL
POWER AMP OUTPUT
COM
4Ω
8Ω
25V
70V
100V
ZONE 2
G
–
+
LINE OUT - BAL/UNBAL
POWER AMP OUTPUT
COM
4Ω
8Ω
25V
70V
100V
ZONE 3
G
–
+
LINE OUT - BAL/UNBAL
POWER AMP OUTPUT
COM
4Ω
8Ω
25V
70V
100V
ZONE 4
G
–
+
POWER CONSUMPTION (max.): 550W
Specifications
MA 4120 480W Mixer Amplifier
Power output
4 x 120Wrms (4 x 240W peak)
Speaker outputs
25V, 70V, 100V and 4-8Ω
Sensitivity
- CH1–4: —50dB (Mic/Phantom),
-10dB (Line)
- CH5: -10dB (unbalanced)
Frequency response
60Hz-17kHz (±3dB)
Tone control
±10dB-100Hz/±10dB-10kHz
(bass/treble)
S/N ratio
>65dB (Mic), >75dB (Line),
>65dB (TEL)
THD
<1% (@1kHz 1W output)
Power consumption
550W (max.)
Power supply
110-240V~50/60Hz AC
Fuse
T6.3A 250V
Dimensions
135 x 484 x 395mm
Weight
22kg
Order code
CRAM33
Z1
Z3
Z2
Z4
CH 1
0
1
2
3
4
5
6
7
8
9
10
-10
+10
-10
+10
-10
+10
Z1
Z3
Z2
Z4
CH 2
0
1
2
3
4
5
6
7
8
9
10
-10
+10
-10
+10
-10
+10
Z1
Z3
Z2
Z4
CH 3
0
1
2
3
4
5
6
7
8
9
10
-10
+10
-10
+10
-10
+10
Z1
Z3
Z2
Z4
CH 4
0
1
2
3
4
5
6
7
8
9
10
-10
+10
-10
+10
-10
+10
Z1
Z3
Z2
Z4
CH 5
0
1
2
3
4
5
6
7
8
9
10
0
1
2
3
4
5
6
7
8
9
10
-10
+10
-10
+10
-10
+10
0
10
PHONE
PHONE
VOLUME
MONITOR
VOLUME
0
10
VOLUME
ZONE 3
MONITOR
0
1
2
3
4
5
6
7
8
9
10
ZONE 1
ZONE 2
ZONE 4
VOLUME
MONITOR
0
1
2
3
4
5
6
7
8
9
10
VOLUME
MONITOR
0
1
2
3
4
5
6
7
8
9
10
VOLUME
MONITOR
0
1
2
3
4
5
6
7
8
9
10
ON
OFF
POWER
LF
HF
GAIN
LF
HF
GAIN
LF
HF
GAIN
LF
HF
GAIN
LF
HF
GAIN
MUTE
MUTE
MUTE
MUTE
MUTE
VOL
VOL
VOL
VOL
VOL
MA 4120 MKII Mixer Amplifier
1
35mm
484mm
395mm
