Extron electronics MVC 121 User Manual page 11

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Installation and Operation
Mic 1 and Mic 2 input connector — Up to two mono
3
microphones, balanced and/or unbalanced, may be connected
to this 5-pole 3.5 mm captive screw connector. See the following
diagram.
Mic inputs will be evenly mixed into both left and right
outputs.
MIC 1 MIC 2
Balanced MIC
Example wiring of balanced and unbalanced mics
Main 3 line level input connector — Connect a line level audio
4
source to this 5-pole 3.5 mm captive screw connector, such as a
CD player, DVD player, tape deck, etc. Balanced or unbalanced
stereo connections can be wired to this connector.
DVD
Example of DVD line level input to Main 3 input
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, part #26-575-01.
To wire the captive screw connectors to RCA or 3.5 mm mini
phone plugs, see the illustrations below.
3.5 mm mini stereo plug
Tip (L) Sleeve (GND)
Ring (R)
Tip (L)
Sleeve (GND)
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MVC 121 • Installation and Operation
2-8
CAMBOARD Electronics
Unbalanced MIC
Extron CSR 6 Adapter
RCA Connector
Tip (+)
Sleeve ( )
Tel. 07131 911201
Fax 07131 911203
Tip
Tip
Sleeve Ring
Sleeve (s)
Tip Tip
Ring
Sleeve
Unbalanced Stereo Input Balanced Stereo Input
(high impedance) (high impedance)
Variable output connector — The balanced/unbalanced stereo
5
output to an amplifier from the 5-pole 3.5 mm captive screw
connector is controlled by the Master volume control knob on
the front panel (see Front Panel Features in this chapter). Adjust
the speaker volume by using the following sequence:
1. Adjust the amplifier's volume down to its minimum setting.
2. Adjust the Master volume control of the MVC to its default
level (volume = 80 when connecting to an unbalanced
consumer amp, or volume = 86 when connecting to a
balanced professional amp).
3. Adjust the amplifier's volume to the desired level.
4. Make subsequent volume level adjustments by using the
MVC's Master volume control.
Output devices cabled with two RCA male inputs may
be connected to the 5-pole 3.5 mm captive screw
connector using the Extron CSR 6 adapter,
part #26-575-01.
Extron CSR 6 Adapter
Example using the Variable output connected to an
amplified sound system
Unbalanced Stereo Output
Left Tip
See Caution
Sleeve(s)
Right Tip
See Caution
Connect the sleeve to ground (Gnd). Connecting
CAUTION
the sleeve to a negative (-) terminal will damage the
audio output circuits.
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MVC 121 • Installation and Operation
600 ohms
Tip
Ring
Sleeve (s)
Tip
Ring
600 ohms
Balanced Stereo Input
(600 ohms)
Sound System
Balanced Stereo Output
Left Tip
Left Ring
Sleeve(s)
Right Tip
Right Ring
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