Just as the name implies, the filter will pass all of the frequencies below the cutoff frequency, but will attenuate those frequencies above the cutoff frequency. Generally, the slope of the filter is also specified. If a filter has a slope of 6db per octave, also referred to as a first order slope, and the cutoff frequency is 100HZ then one octave higher, 200HZ the signal has been attenuated by 6db, one octave higher than that, 400Hz, the sound will be down by 12db, and so on.

What is a Low Pass Filter

I can not fin a definition that a newbie like me can understand searching Audiogon. My Subwoofer, Sonus Faber Cremona, has 2 dials in the back. One for Low Pass Filter, switchable from 38-65Hz 6 positions and one for Gain that reads min to max.

More Info:

http://www.sumikoaudio.net/sonus/prod_cremonasubwoofer.htm

Thanks in advance for any help,

David

More Info:

http://www.sumikoaudio.net/sonus/prod_cremonasubwoofer.htm

Thanks in advance for any help,

David

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