Ashly GQX-3101 Manual de instruções - Página 4

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Operating Manual - GQX 3102, GQX 3101, and GQX 1502 Graphic Equalizer

AUDIO CONNECTORS AND CABLES

Your GQX series equalizer is provided with three

different connector types. 1/4 inch stereo phone jacks,

three pin XLR type connectors, and a terminal strip will

allow interfacing to most professional audio products.

Inputs as well as servo-balanced outputs can be used bal-

anced or unbalanced. When possible, we recommend bal-

anced connections between all components in your system,

as this eliminates ground-loop induced hum and noise.

3.1

Inputs

If inputs are used unbalanced, the signal should

be on the (+) connection and the (-) connection must be

tied to ground. A mono phone plug used as an unbalanced

connection will automatically ground the ring of the jack

which is the (-) connection. When using a stereo plug,

Tip (+)

Sleeve (Ground)

Pins are

2 = (+)

numbered

3 = (gnd)

in the

1 = (gnd)

connector

insert.

Input

Output

(gnd) (+)

(gnd)

Chassis Ground

Signal Ground

Unbalanced Audio Connectors

Input is active balanced.

Output is active servo-balanced.

If unbalanced connection is used

be sure to ground unused path.

Maximum in/out level is +22dBu.

PUSH

Inputs

(Parallel)

Mono Phone Plug

used for unbalanced

XLR Male

Terminal Strip

(+)

(-)

(+)

(-)

XLR connector, or terminal strip for an unbalanced sig-

nal, the (-) input connection MUST be tied to ground, or

loss of signal level may result.

3.2

Servo-Balanced Output

The Ashly servo-balanced output circuit is an

active balanced output. This circuit maintains a constant

output level (or difference voltage) between the (+) and

(-) output terminals, regardless of either terminal being

connected to ground as in an unbalanced output connec-

tion.

This servo-balanced output has an advantage over

conventional active balanced outputs in that the signal

level is unchanged when either the (+) or the (-) output

terminals are connected to ground. A conventional ac-

tive balanced output would suffer a signal loss of 1/2 the

output voltage (or -6dB) if one of the output terminals

were grounded in an unbalanced connection.