User Manual

Radial Engineering Ltd.
MC3 Monitor Controller
True to the Music
®
4
TYPICAL MC3 SETUP
The MC3 Monitor Control is typically connected to the output of your mixing console, digital
audio interface or laptop computer represented as a reel-to-reel machine in the diagram. The
outputs of the MC3 connect two pairs of stereo monitors, a subwoofer and up to four pairs
of headphones.
A
B B
A
S
BALANCED VS UNBALANCED
The MC3 can be used in either balanced or unbalanced mode by setting the conguration
(CONFIG) switch on the rear panel to suit. Because the main stereo signal path through
the MC3 is passive, like a “straight-wire”, you should not mix balanced and unbalanced
connections. Doing so will ultimately “un-balance” the signal through the MC3. If this is done,
you may encounter crosstalk or bleed. For proper performance always maintain either

the appropriate setting. Most mixers, workstations and near-eld monitors can be used in
either mode, so this should not pose a problem when used with the proper interface cables.
The diagram below shows various types of balanced and unbalanced audio cables.
RING
1 2
3
TIP
SLEEVE
RING
TIP
SLEEVE
RING
TIP
SLEEVE
SHIELD
SHIELD
SHIELD
SHIELD
1 2
3
TIP
SLEEVE
TIP
SLEEVE
TIP
SLEEVE
RING
1 2
3
TIP
SLEEVE
RING
TIP
SLEEVE
RING
TIP
SLEEVE
SHIELD
SHIELD
SHIELD
SHIELD
1 2
3
TIP
SLEEVE
TIP
SLEEVE
TIP
SLEEVE
RING
1 2
3
TIP
SLEEVE
RING
TIP
SLEEVE
RING
TIP
SLEEVE
SHIELD
SHIELD
SHIELD
SHIELD
1 2
3
TIP
SLEEVE
TIP
SLEEVE
TIP
SLEEVE
RING
1 2
3
TIP
SLEEVE
RING
TIP
SLEEVE
RING
TIP
SLEEVE
SHIELD
SHIELD
SHIELD
SHIELD
1 2
3
TIP
SLEEVE
TIP
SLEEVE
TIP
SLEEVE
Balanced TRS Source
Balanced ¼” TRS ~ Balanced ¼” TRS
Balanced XLR Source
Balanced XLR ~ Balanced ¼” TRS
Unbalanced XLR ~ Unbalanced ¼” TS
Balanced XLR Source
Balanced TRS Destination
Balanced TRS Destination
Unbalanced ¼” TS Destination
Unbalanced ¼” TS DestinationUnbalanced ¼” TS Source
Unbalanced ¼” TS ~ Unbalanced ¼” TS