Ashly GQX-1502, GQX-3102, GQX-3101 manual Grounding, AC Power

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

TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMOVE COVER. NO USER SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL. TO REDUCE THE RISK OF FIRE REPLACE ONLY WITH SAME TYPE FUSE. TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE.

120 VAC 50-60 Hz.

24 Watts

Ashly Audio Inc.
Rochester, NY
Made In USA
Model GQX-3101	1/2 Amp
	CAUTION:
	Disconnect power cord
	before replacing fuse
	ATTENTION:
	Debrancher
	avant d'ouvrir

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.

3.3Grounding

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

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.

4.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.

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