Extron electronics MPA 152 Uživatelská příručka stáhnout pdf (Strana 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

50mA10V

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

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 figure 7 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 attention and note 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

MPA 152 • Panels and Cabling 8

1 2 ... 9 10 11 12 13 14 15 16 17 18 19 20 21 22

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