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Plugging, Cables, Trs jack – Allen&Heath GL2200 USER GUIDE User Manual

Page 8: Gl2200

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GL2200

U

SER

G

UIDE

8

PLUGGING

UP

THE

CABLES

The GL2200 uses professional grade 3-pin XLR, 1/4" TRS jack and RCA PHONO sockets.
Where possible use balanced connections to prevent noise and interference pickup especially
on long cable runs. Avoid running audio cables next to AC mains, computer or lighting cables,
near thyristor dimmer units or power supplies etc. The use of low impedance sources such as
good quality microphones of 200 ohms or less significantly reduces interference pickup. Many
problems can be avoided by taking time to check that all cables are correctly wired. Avoid
reversing + and - on balanced connections as this will result in out of phase signals (reverse
polarity) causing signal cancellation effects. This situation is particularly common in multi-
microphone mixing. Use professional quality cable and carefully soldered connections. The
following wiring convention is used:

C

ABLE

W

IRING

To connect an unbalanced source to a balanced console input, link the cold input (XLR pin 3 or
jack ring) to 0V earth (pin 1 or jack sleeve) at the console. To connect a balanced console
output to an unbalanced destination link the cold output to 0V earth at the console.

¼" 3-POLE (STEREO) JACK PLUG

R

in

g

T

ip

S

le

ev

e

INPUT

3-PIN XLR FEMALE PLUG

3-PIN XLR MALE PLUG

OUTPUT

1

3

3

2

2

1

1

3

2

2

3

1

3-PIN XLR MALE PLUG

INPUT

3-PIN XLR FEMALE PLUG

OUTPUT

T

ip

S

le

ev

e

¼" 2-POLE (MONO) JACK PLUG

Link

T

ip

R

in

g

S

le

e

ve

OUTPUT

INPUT

SINGLE SCREENED CABLE

SINGLE SCREENED CABLE

TWIN SCREENED CABLE

¼" 3-POLE (STEREO) JACK PLUG

RCA PHONO PLUG

CONSOLE

CONNECTIONS

CONNECTIONS

CONSOLE

CONSOLE

CONNECTIONS

BALANCED

UNBALANCED

UNBALANCED

Tip

Ring

Sleeve

Tip

Sleeve

Ring

Sleeve

Tip

Link

¼” TRS jack

Tip

+ / hot / signal / left / send

Ring

- / cold / 0V / right / return

Sleeve

0V earth shield

XLR

Pin 1

0V earth shield

Pin 2

+ / hot / signal

Pin 3

- / cold

Deselect input channel +48V when inputs are connected to non-phantom
powered, mic, line or unbalanced sources.

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