Profile CL440 Adjusting the X-OVER, Bass and SUB Sonic Filter, Fine Tune the System

ADJUSTING THE X-OVER, BASS AND SUB SONIC FILTER

.

(Please note: If you intend to us e the amplifier in the Tri-mode configuration, it is necessary to set the crossover control to the "FULL" setting in order to receive full range output)

The Clarus amplifiers are equipped with a built-in variable crossover network allowing you to select the crossover type (i.e. Low-Pass or Hi-Pass) 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 crossover point should be determined by the speakers operating range. Please refer to speaker manufactures recommended crossover point.

Select the crossover type on the

amplifiers side panel.

(Low-pass is selected in this example for subwoofers)

CL1200 & CL600M Models Only

A Sub Sonic Filter is provided for the CL1200 & CL600M to filter out sub sonic frequencies below the audible range that would normally waste the amplifiers power.

Select the crossover point	You can add up to 18dB bass boost by
for your speakers.	increasing the Bass Boost control.

CL1200CL600M

FINE TUNE THE SYSTEM

Fine tune the amplifier's input sensitivity.

Access to the gain sensitivity control for the Clarus 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 3/4 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 3/4 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 speakers. If you are unable to achieve 3/4 volume before distortion you will need to adj ust gain control (in this case you would reduce the gain). The gai n 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.

13