Appendix B Connections, XLR Connectors

Appendix B: Connections

XLR Connectors

The inputs and outputs use 3-pin male and female XLR connectors. They are wired as follows, according to standards speciﬁed by the AES (Audio Engineering Society).

SHIELD 2

HOT

COLD 3 1

1SHIELD

3COLD

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 signals.

SLEEVE

SLEEVE TIP

TIP

SLEEVE

1/4" TS Unbalanced Wiring:

Sleeve = Shield

Tip = Hot (+)

XLR Balanced Wiring

Pin 1 = Shield

Pin 2 = Hot (+)

Pin 3 = Cold (–)

HOT

1/4" TRS Insert Plugs and Jacks

The SIDE CHAIN connectors on the SQ•2 are special 1/4" TRS insert cables that use the tip to send the signal outside the box, and the ring to return the signal to the box. The sleeve is the common ground (earth) for

1/4" TRS Phone Plugs and Jacks

“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.

RING SLEEVE

SLEEVE RING TIP

TIP

RING

TIP

SLEEVE

1/4" TRS Balanced Wiring:

Sleeve = Shield

Tip = Hot (+)

Ring = Cold (–)

both signals. These are both unbalanced signals. Note: This insert cable is also used with a mixer’s

insert jack.

	ring		SEND to processor
tip		(TRS plug)	“tip”
	sleeve
This plug connects to the			“ring”
SQ•2’s SIDE CHAIN Insert jack.
			RETURN from processor

1/4" TRS Insert Wiring:

Sleeve = Ground

Tip = Send

Ring = Return