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Output Output Output Output
1L
1R
1
2
2L
2R
Gain
3L
3R
Gain
4L
4R
Gain Gain
3
L
4
R
Input
L
R
Input
12 VDC
Trigger
120 VAC
4 Amps
Link (out position)
cascades channel 1
to chanels 2-4
MA850
10. Connect the AC power into an outlet than can supply at
least four amps (550 watts) dedicated to each MA850.
Caution: Never listen to sound that is distorted. If distorted
sound is heard, turn the volume down immediately or speaker
and/or amplifier damage could occur that is not covered by the
warranty. If this problem persists, contact your dealer.
User adjustments and service: There are no user
adjustments on the MA850. Your installer may make certain gain
level adjustments on the rear panel.
Caution: The MA850 contains no user serviceable parts, so do
not attempt to open or repair the MA850. Refer servicing to a
qualified technician only or contact the factory for information.
Caution: NEVER connect the
MA850 to impedances
less than 4 ohms or amplifier
damage not covered
by the warranty may occur.
The trigger is 12 VDC (35mA per MA850) via 3.5mm mono
jack. 5 VDC trigger outputs will not work. To connect the
trigger to a receiver use a 12 VDC power supply (we
suggest Knoll PS1202 power supply with an adaptor). Plug
the power supply into the switched outlet on the rear of
the receiver. Connect the 12 volt wire to a 3.5mm mono
jack. Plug the jack into the rear of the MA850. 12 VDC
polarity is not important. Make sure the
amplifier power switch is off (out). When the receiver is
switched on, the MR1250 amplifier is switched on.
The Link button is normally set to the in
position to give all six stereo inputs individual
sources. When the Link button is set to the
out position, that input Left/Right is linked or
cascaded to input #1 (without the use of Y cords). Any or
all combination of linked inputs 2 to inputs 6 are possible.
When all inputs are linked to input 1 the input impedance
is about 4000 ohms.