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When Using the Amplifier
Make sure that the volume control is turned to minimum position before power is
switched on. Loud sound produced at high volume when power is switched on may
impair hearing.
DO NOT place heavy objects on the amplifier, for it may cause it fall and may result
in body injury and/or property damage. Besides, the object itself may cause
damaged or body injury.
DO NOT operate the amplifier for the extended period of time with the sound
distorting. It is an indication of malfunction, which can cause heat and result in fire.
Switch the power off, and unplug the power supply plug from the AC outlet for safety
purposes, when cleaning or leaving the amplifier unused for 7 days or more. Fire or
electric shock may occur.
If the dust accumulates on the power supply plug or in the wall AC outlet, fire may
result in. Clean it periodically. In addition, make sure the plug is inserted in the
wall outlet securely.
Contact your local dealer to clean the dust, it the dust has accumulated in the
amplifier for a long period of time. Dust accumulation may result in fire or damage.
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Description
QSB-6xxE series booster amplifiers cover models from 120W RMS to 480W RMS. This
manual is to for 120W QSB-612E and 240W QSB-624E.
QSB-6xxE series is the most easy to use booster amplifier. It has XLR and phone jack
inputs. And it also has XLR and phone jack output for the connection to another amplifier..
It equips speaker screw terminal for the direct connection to the speaker of 8 ohm, or 70V,
or 100V speaker.
The sensitivity selection switch on the rear is for the sensitivity of 100mV or 1V selection.
Another slide switch is for “Mono” or “Parallel” selection. The gain control is for the control
of input signal..
Besides 115 / 230V AC power source, QSM-6xxE series booster amplifier also accept DC
24V battery power source as backup power.
To ensure the amplifier working normally and safe operation, it has speaker short, over
temperature, and overload protection function.
QSM-6xxE series is simple and easy to use booster amplifier.
