DB Drive APM 250.4D Посібник користувача - Сторінка 7
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APM 250.4D
The APM 250.4D ampli er is equipped with a variable crossover network that allows you to select the
crossover mode (Highpass — Full Range) and desired crossover point for channels 1 and 2. Channels 3
and 4 allow you to select between a Highpass 12db slope, a 12db Stereo Lowpass / Bandpass slope and a
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For example if you wish to drive a pair of subwoofers on channels 3 and 4 in the br
select the LP/BP mono switch setting on the ampli er to lter out the high frequencies with a 24db
slope. You will then need to adjust the Lowpass control to the desired frequency setting (make sure to
have the Highpass control set to 15Hz so that the Bandpass lter does not engage)This will only send
low frequencies to your subwoofers. If you wish to use the Bandpass crossover
over switch to LP/BP stereo. Once the LP/BP stereo switch setting is selected you will use both the
Lowpass and Highpass controls to lter out the unwanted low and high frequencies to create the
desired Bandpass
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Highpass lter select the x-over switch to the HP setting, this will lter out any unwanted low
frequencies with a 12db slope.
Channel 1 & 2
Channel 3 & 4
Highpass Control
Lowpass Control
Channel 3 & 4
Channel 3 & 4
24db/Oct Lowpass/Bandpass
12db/Oct Lowpass/Bandpass
Mono output
Stereo output
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Channel 3 & 4
Highpass Control
Channel 3 & 4 Bandpass Control
when function is activated
The
APM 300.2D
the crossover mode and desired crossover poin required to properly tune your set-up.
The high pass crossover
Frequencies from reaching your speakers or Selecting the Low pass function elimates high
Frequencies from being reproduced by your subwoofers.
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Low Pass Control
APM 300.2D
ampli er is equipped with a built - in variable crossover networks allowing you to select
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allows you to lter out any unwanted low
High Pass Control
Selectable Crossover