MACKIE Srm150 - Manual (Page 13)

13
CONNECTIONS
1/4" TS Phone Plugs and Jacks
“TS” stands for Tip-Sleeve, the two connection points
available on a mono 1/4" phone jack or plug. They are
used for unbalanced line-level signals and the high-
impedance instrument input on Channel 1.
SLEEVE
TIP
TIP SLEEVE
TIP
SLEEVE
1/4" TS Unbalanced Wiring:
Sleeve = Shield
Tip = Hot (+)
RCA Plugs and Jacks
RCA-type plugs (also known as phono plugs) and jacks
are often used in home stereo and video equipment, and
to make S/PDIF connections on consumer digital audio
devices. They are unbalanced and electrically equiva-
lent to a 1/4" TS phone plug.
TIP SLEEVE TIP SLEEVE
RCA Unbalanced Wiring:
Sleeve = Shield
Tip = Hot (+)
XLR Connectors
Inputs 1-2 accept 3-pin male XLR connectors on the
combo inputs. They are wired as follows, according to
standards specified by the AES (Audio Engineering
Society).
2
2
3 1
1
SHIELD
COLD
HOT
SHIELD
COLD
HOT
3
SHIELD
COLD
HOT
3
2
1
XLR Balanced Wiring:
Pin 1 = Shield
Pin 2 = Hot (+)
Pin 3 = Cold (–)
1/4" TRS Phone Plugs and Jacks
The combo inputs also accept 1/4" TRS connectors.
“TRS” stands for Tip-Ring-Sleeve, the three connection
points available on a stereo 1/4" or balanced phone
jack or plug. TRS jacks and plugs are used for balanced
signals and stereo headphones.
Balanced Mono
SLEEVE
TIP SLEEVE
TIP
RING
RING
TIP
SLEEVE RING
1/4" TRS Balanced Mono Wiring:
Sleeve = Shield
Tip = Hot (+)
Ring = Cold (–)
Stereo Headphones
SLEEVE
TIP SLEEVE
TIP
RING
RING
TIP
SLEEVE RING
1/4" TRS Stereo Unbalanced Wiring:
Sleeve = Shield
Tip = Left
Ring = Right