For a sound designer it is strange to cut off treble
frequencies with a low-pass filter and to cut off bass
frequencies with a high-pass filter. Filters change
the sound in special frequency regions.
Filters changing the bass frequencies are application-
oriented called low cut filter, bass cut filter, or rumble
filter. Filters changing the treble frequencies are
better called treble cut filter, high cut filter, or noise
filter.
Notice:
When you want to build your own amplifier,
take better the following calculation values:
Thomas Kugelstadt, "Active Filter Design Technique" http://focus.ti.com/lit/ml/sloa088/sloa088.pdf