Extron electronics MVC 121 Plus User Manual page 13

Line input 3, left (L) and right (R) — A line level audio source, such as a CD player,
MVC 121 MAIN wiring.eps
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output from a switcher, DVD player, or other audio device, may be connected to
the 5-pole 3.5 mm captive screw connector. Line inputs provide gain settings to
accommodate consumer and pro operating line level sources. Balanced or unbalanced
stereo connections can be wired to this connector (see the following example diagram).
DVD
NOTE: Input devices cabled with two RCA male outputs may be connected to the
5-pole 3.5 mm captive screw connector using the Extron CSR 6 adapter.
Figure 5. Input Devices Cabled with Two RCA Male Outputs
To wire the captive screw connectors to the RCA or 3.5 mm mini phone plugs, see the
following illustrations.
Audio RCA connector color.eps
Tip (Signal)
Right Channel
(Red Jacket)
Sleeve (Gnd )
Left Channel
(White Jacket)
Tip (+)
Sleeve ( )
Do not tin the wires!
Tip
Ring
Sleeves
Tip
Ring
Balanced audio
Figure 6. Wiring Captive Screw Connectors
Variable output left (L) and right (R) — The balanced/unbalanced stereo output
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to an amplifier from the 5-pole 3.5 mm captive screw connector is controlled by the
large main volume control knob on the front panel (see
page 7). Volume range is from 0 to 100%, or -100 to 0 dB.
Adjust the speaker volume by using the following sequence:
1. Adjust the volume of the amplifier down to its minimum setting.
2.
Adjust the main volume knob of the MVC to its default level of 100% volume, or
0 dB.
3. Adjust the volume of the amplifier to the desired level.
4. Make subsequent volume level adjustments by using the volume knob of the MVC.
NOTE: Output devices cabled with two RCA male outputs may be connected to the
5-pole 3.5 mm captive screw connector using the Extron CSR 6 adapter.
CSR 6 RCA Adapter
Tip (L)
Ring (R)
Sleeve ( )
3.5 mm TRS Connector
Tip
Sleeve
Tip
Sleeve
Unbalanced audio
Front Panel Features
MVC 121 Plus • Installation
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