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Hey Muff!

says...

Q is a measure of how wide (low Q) or narrow (high Q) the spread of
affected frequencies is for the EQ. Here are two examples:

This sounds familiar (Q) ... Its been a while since my last electronics
class, but I recall this in my radio communications class (I think).

Harry installs a parametric EQ. He wants to take out a really sharp
peak in response around 4KHz. The peak is centered at 4 KHz, but only
has a 200 Hz spread (that is from 3900 to 4100.) He sets the frequency
to 4 KHz and cranks the Q way up to tighten the spread of frequencies.
He then lowers the level of that band to take out the peak without
affecting too much of the sound outside the affected area.

That is simply bitchen!

I hope this makes sense. Parametric EQs are very powerful tools, but
you really have to understand how they work to get the most out of
them. Paragraphic controls are much easier to work with, but don't
quite have the same power to change how the system sounds.

Indeed ... I think I should look into a parametric EQ for my system. For
some reason, my speakers reproduce some (literally) painful high
frequencies ... it seems to be within the third slider from the right on
my EQ (10k maybe?), but taking that slider all the way down affects the
rest of the audio, and it is difficult to find the balance I want.

Any recommendations on a good parametric EQ?