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MPA 152 Plus • Setup Guide (Cont’d)
The MPA 152 Plus sums and weights the left unbalanced signals from the TRS and RCA receptacles. This summed, unbalanced signal is then summed with the left balanced signal from the captive screw receptacle. The right channel is handled in the same way.
The left and right channels are then sent to the output amplifiers in one of two ways, depending on how the |
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front panel switch is set (see the diagram to the right). |
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zz Stereo: The left and right channels are sent to the left and right output amplifers respectively. |
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| DUAL |
zz Dual Mono: The left and right channels are summed and then the resulting mono signal is fed to both of |
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| MONO | |
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the output amplifiers. |
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NOTE: The captive screw, RCA and TRS inputs are buffered.
5. Connect the |
| PS 1220 |
3.5 mm captive screw outlets on the provided power supply and the |
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MPA 152 Plus | Power Supply | |
other end into the power receptacle on the amplifier (see the figure |
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to the right). The power cord connectors are correctly wired when | Amplifier |
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POWER | DC Power | |
shipped. The MPA 152 Plus ships with a 24 W desktop power supply. | 12V | Outputs |
0.7A MAX | ||
| Power | AC Power Cord |
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ATTENTION: | Receptacle |
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• See the attention notices in the Power Input section of the |
| DO NOT USE |
MPA 152 Plus Series User Guide for important information | DC Power Cord |
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about using power supplies. | Captive Screw | Captive Screw |
Connector | Connector |
• When the power supply is connected to the MPA 152 Plus, it |
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must not be shared with any other devices. | Power Supply | Wrap |
Output Cord |
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6.Adjust the MPA 152 Plus input level, bass, and treble from the front panel (see figure at right).
a.If necessary, unplug the remote connector from the unit (see step 7, below).
b.If connecting the amplifier to a system with adjustable volume, set the system volume to its lowest point. Then adjust the MPA 152 Plus front panel level potentiometer fully counterclockwise.
LEVEL BASS TREBLE
MPA 152 PLUS
MINI POWER AMPLIFIER
c.Set the system volume to its maximum volume level (no sound should come out).
d.Return to the MPA 152 Plus and raise the level until sound distortion first occurs, then lower slightly until the distortion disappears. This setting ensures that, whatever the system volume setting may be, no clipping occurs.
e.Adjust bass and treble to preference.
7.The rear panel
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10V |
| 50mA |
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| +91.80.3055.3737 FAX |
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| © 2013 Extron Electronics All rights reserved. www.extron.com |
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| Rev A 06 13 |
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