Q Control

[cool9 10+ year member]

I found an equalizer (Eclipse 21010) with Q control and their site doesn't explain (no manual). I found these definitions:

Q - the magnification of resonance factor of any resonant device or circuit. A driver with a high Q is more resonant than one with a low Q.
Resonance - the tendency of a speaker to vibrate most at a particular frequency.

Is this a really good feature to have? Can anyone add to this?
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[JimJ 5,000+ posts]

To oversimplify things a bit -

On a regular graphic equalizer, you can change only one thing - the amplitude of the boost or cut. The frequencies (bands) are already set for you, and the bandwidth is fixed. On a parametric EQ, on the other hand, you can change those frequencies - and here's the relevant part - change how wide the boost/cut will be. So you may be fiddling with one center frequency, but a low Q setting means that more surrounding frequencies will be affected. Think of it like a low crossover slope versus a steep one.

It's a whole lot easier to explain with pictures than text, and I'm sure Google can help with that...//content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[cool9 10+ year member]

Some parametrics don't have knobs to change the width of the frequency, right? At least my 4-band Pyle doesn't. It only has 4 bands and that's it. (How can they call it parametric?) I'm looking at a Phoenix Gold 4-band (TEQ4) which does have a level for each boost/cut knob for a total of 8 knobs.