On Tue, 31 May 2005 14:37:38 -0400, Howard Ferstler
wrote:

dave weil wrote:

On Tue, 31 May 2005 13:47:50 -0400, Howard Ferstler
wrote:

Ironically, the SVS
20-39 Ultra sub I reviewed a while back for TSS also had a
parametric equalizer built in, although it was only a
single-band job.

Wouldn't a single band cover the entire low bass range? If so, why
would you need another band?

The SVS unit's single-band equalizer was fully adjustable as
to center frequency (anywhere from 20 to 80 Hz), degree of
cut (it could only cut, not boost), and Q (width of
corrected range). It was designed to flatten out the primary
resonant peak. The Velodyne DD models have multi-band
parametric equalizers built in, for serious fine tuning the
response curve. The outboard Rane THX-44 equalizer that I
use (and which I have also reviewed) has a two-band
parametric for the subwoofer channel between 20 and 80 Hz,
in addition to combination graphic and parametric
equalization for the three front channels above 80 Hz.

That wasn't really responsive to my question.

Why on earth would you need multi-band parametrics for such a narrow
frequency band? Wouldn't that be "overkill"?