Справочник Пользователя для Quantum Audio QCA4400

DJUSTMENTS AND SETTINGS

The “Cozmik Series” amplifiers are equipped with built-in variable crossover networks

allowing you to select the crossover mode (i.e. Low-Pass/Full/High-Pass or On/Off) and

the desired crossover point. For example if you wish to drive a pair of subwoofers, you

can select the “Low Pass” setting on the amplifier to filter out high frequencies. This will

send only low frequencies to your subwoofers (see example settings below). The cross-

over point should be determined by the speakers operating range. Please refer to speaker

manufactures recommended crossover point.

INE TUNE THE SYSTEM

Fine tune the amplifier’s input sensitivity

The gain sensitivity control for the “Platinum Series” amplifier is located on the side panel.

This gain control has been included to allow adjustment to properly match the output of the

radio. This is one of the most misunderstood adjustments. By rotating the control in the

clockwise direction, the amplifier’s input will become more sensitive and the music will play

louder. This is not a volume control and you will not get more power out of the amplifier in

the maximum position! It may seem to deliver more output, but actually the system is only

playing louder faster as you turn the volume control on the radio. Ideally, to properly level

match the system the goal is to achieve maximum output from the amplifier without

distortion at about ¾ of the volume control.

To determine if the amplifier’s gain is set properly, turn the system on and slowly increase

the volume control. You should be able to use about ¾ volume before the system gets loud

but not distorting. It is very important when making these adjustments that you do not over

drive the speakers (at point of distortion) this will cause permanent damage to the speak-

ers. If you are unable to achieve ¾ volume before distortion you will need to adjust gain

control (in this case you would reduce the gain). The gain controls should be adjusted very

slowly. It may help to have another person to assist you by adjusting the gain controls while

you listen for distortion.

Min Max

Input Level

www.QuantumAudio.net

FRONT

REAR

BASS

BOOST

BASS

BOOST

FREQ

LEVEL

FULL

X-OVER

INPUT

HPF

LPF

FULL

HPF

LPF

0dB 18dB

60Hz 400Hz

MIN MAX

800 Watts Dynamic Power

4 Channel Amplifier

QC4400

Adjust the frequency to the

desired point for speakers 1 & 2.

Adjust the frequency to the

desired point for speakers 3 & 4.

Filter selection for channel 1 & 2

Filter selection for channel 3 & 4

Bass Boost @ 45Hz

*0~18dB Channels 3 & 4

Only in Lowpass

Bass Boost @ 45Hz

*0~18dB Channels 1 & 2

Only in Lowpass