Audio output, Speakers – Extron Electronics MPA 152 User Guide User Manual
Page 14
To regulate multiple amplifiers with a single volume controller, follow these instructions:
1.
Attach all three pins of the volume controller to the corresponding pins on the first
MPA 152 unit only (ground to ground; Vol/Mute to Vol/Mute; and 10 V to 10 V).
2.
Use jumper wires to connect the Vol/Mute pins of the first amplifier and each successive
amplifier.
3.
Use jumper wires to connect the ground pins of the first amplifier and each successive
amplifier.
10V
VOL/MUTE
50mA
10V
VOL/MUTE
50mA
10V
VOL/MUTE
50mA
10V
VOL/MUTE
Extron
VCM 100 AAP
Extron
MPA 152
daisy chain
Figure 6.
Regulating Multiple Amplifiers with a Single Volume Controller
NOTE: The 10V pin of the volume controller connects to the first MPA 152 only.
There are no jumper wires linking it to subsequent amplifiers.
Audio Output
f
Speaker connector — This 4-pole, 5 mm captive screw
connector is used to connect the amplifier to the speakers.
All right channel input signals are summed to produce a
single, right channel output; likewise, all left channel input
signals are summed to produce a single, left channel output
If the front panel switch (see
on page 9) is set to stereo, the output will be
stereo; if the front panel switch is set to dual mono, the right and left channels will be
mixed (summed and divided by two) for a dual mono output.
With an 8 ohm load, the amplifier produces up to 8 watts per channel. With a 4 ohm
load, the amplifier produces up to 15 watts per channel.
See the
on page 5 for important information about connecting
wires to captive screw connectors.
ATTENTION: Do not short the + and – outputs to each other, as this will damage
the amplifier.
OUTPUT
4/8
OHMS
L
R
MPA 152 • Panels and Cabling
8