DB Research Okur A3 1050.1D User Manual And Installation Instructions - Page 7

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A3 85.2

The A3 80.2 amplifiers are equipped with a built-in variable crossover networks allowing you to select

the crossover mode (i.e. Lowpass/Bandpass – Highpass—Full Range) and desired crossover point.

For example if you wish to drive a pair of subwoofers, you can select the "LP/BP" switch setting on the

amplifier to filter out the high frequencies. You will then need to adjust the Lowpass control to the

desired frequency setting (make sure to have the Highpass control set to 20Hz so that the Bandpass

filter does not engage)This will only send low frequencies to your subwoofers. If you wish to use the

Bandpass crossover filter you must set the x-over switch to LP/BP. Once the LP/BP switch setting is

selected you will use both the Lowpass and Highpass controls to filter out the unwanted low and high

frequencies to create the desired Bandpass filter. To use the Highpass filter select the x-over switch to

the HP setting, this will filter out any unwanted low frequencies. The Full setting on the x-over turns

off all the crossover functions.

Filter selection for

High Pass

Filter selection for

Band Pass

Bass

LP/BP HP FR

85.2

A3 65.4 / A3 85.4

The A3 64.5 / A3 85.4 amplifiers are equipped with a built-in variable crossover networks allowing

you to select the crossover mode (i.e. Lowpass/Bandpass – Highpass—Full Range) and desired

crossover point. For example if you wish to drive a pair of subwoofers, you can select the "LP/BP"

switch setting on the amplifier to filter out the high frequencies. You will then need to adjust the

Lowpass control to the desired frequency setting (make sure to have the Highpass control set to

20Hz so that the Bandpass filter does not engage)This will only send low frequencies to your

subwoofers. If you wish to use the Bandpass crossover filter you must set the x-over switch to LP/BP.

Once the LP/BP switch setting is selected you will use both the Lowpass and Highpass controls to

filter out the unwanted low and high frequencies to create the desired Bandpass filter. (The Bandpass

crossover is available on only channels 3 and 4) To use the Highpass filter select the x-over switch to

the HP setting, this will filter out any unwanted low frequencies. The Full setting on the x-over turns

off all the crossover functions. The Highpass crossover feature is selectable on all 4 channels. The

Full setting on the x-over turns off all the crossover functions.

Adjust the frequency to the

Filter selection for

desired point for Channels 3 & 4

Channels 1 & 2

Filter selection for

Channels 3 & 4

Adjust the frequency to the

desired point for Channels 1 & 2

65.4