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

TO REDUCE THE RI SK OF ELECTRIC SHOCK DO NOT REMOV E

COV ER.

NO USER SERVI CEABLE PARTS IN SIDE.

SERVICING TO QUALIFI ED SERVICE PERSON N EL. TO REDUCE

THE RI SK OF FIRE REPLACE ONLY WITH SAME TYPE FUSE.

TO REDUCE THE RISK OF FIRE OR ELECTRI C SHOCK DO NOT

EXPOSE THIS EQUIPMEN T TO RAIN OR MOI STURE.

AVIS:

RISQUE DE CHOC ELECTRIQUE -

NE PAS OUVRIR.

Furthermore, if common-mode voltage (such as

60Hz noise voltage) gets induced on the output signal

lines, the resulting 60Hz noise current into the servo-bal-

anced circuit would be insignificant because the common-

mode output impedance is high. A conventional active

balanced output would cause significant noise current

resulting in more noise.

Essentially, the servo-balanced output circuit

behaves like a transformer balanced output because it

maintains a constant level into balanced and unbalanced

lines with a low differential impedance and a high com-

mon-mode impedance. The servo-balanced output also

does not suffer from problems associated with output

transformers such as low-frequency distortion, suscepti-

bility to magnetic fields and poor frequency response.

3.3

Grounding

The terminal strip has two ground connections,

one for input ground and one for chassis ground. The

equalizer is shipped with a jumper strap connecting these

two grounds. Normally, this strap should be left in place

so the chassis and input grounds are connected. In a rack-

mount installation where the equalizer is connected to other

equipment with unbalanced inputs or outputs and the rack

itself provides a good electrical connection between the

REFER

Ashly Audio Inc.

Rochester, NY

Made In USA

Model GQX-3101

equalizer chassis and the other equipment, it may be de-

sirable to remove this strap to isolate the input ground

from chassis ground and avoid a ground loop.

Unless you have such an installation and have a

hum problem you can't solve by other means (ie: using

balanced input and output connections), leave the ground

jumper strap in place.

AC POWER

Your GQX equalizer should be connected to a

standard 3-wire grounded electrical outlet supplying 120

Volts, 50-60 Hz (some export models are wired for 240

Volts, and are labeled as such). To reduce the risk of

ground loop hum, connect all audio equipment to the same

electrical power source. Removal of the ground pin is both

unlawful and dangerous, as a potential shock hazard could

result.

This unit will perform normally within an AC

voltage range of 93 to 130 volts. Voltages less than this,

as found in "brown-out" conditions, will reduce headroom

and decrease power supply regulation. While this may

affect performance, the equalizer will continue to func-

tion during a brown-out. In the event of a blown fuse,

replace only with same type fuse. No user serviceable

parts are inside the chassis. Overall power consumption

is less than 25 watts.

120 VAC 50-60 Hz.

24 Watts

1/2 Amp

CAUTION:

Disconnect power cord

before replacing fuse

ATTENTION:

Debrancher

avant d'ouvrir