2. amps-preamps
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Parametric / graphic equalizer recommendations

I have decided my system is too bright. Room treatment did not solve the problem so I am looking at equalizers:

dual graphic eq

(car) parametric eq

They have <.01% THD and 95 dB S/N ratio so don't see them hurting signal too much - I hope.

* Are these good brands?
* Do I need dual eq (one for each speaker)or is mono (average of both speakers)okay?
* Is 31 band necessary. Would 10 band be enough?
* Any place I can get an audio parametric eq. and is this better than graphic eq.?

Thanks for any help.
cdc

Showing 2 responses by onhwy61

onhwy61's avatar
onhwy61
5,300 posts
 
I need more info to really answer your question. First, what is your system? Second, what do you mean by bright? Are you talking about an emphasis in the 5-8khz range, or do you mean excessive high frequency (>10khz) content? As a rule it's always better to address the root cause of tonal imbalances. My experience is that parametrics are something of a band-aid and of limited effectiveness. Graphic EQs are even less effective.
onhwy61's avatar
onhwy61
5,300 posts
 
I strongly agree with the above comments about seeking medical help.

If all anyone wants to do is in/decrease high frequencies then a low pass filter is more effective than a parametric EQ circuit. Go to the following website and look at the parametric and shelving curves at the bottom of the file and you'll see the difference. The site is a paper presented by George Massenburg outlining the engineering behind parametric EQs. A graphic EQ can be considered as a special case (fixed frequency and sans Q control)of a parametric curve. Traditional treble controls are an example of a low pass filter. As a practical matter nearly all commercially available parametric EQ devices also offer separate low and high pass filters.

http://www.massenburg.com/cgi-bin/ml/parametric.html?id=FhaBkZYi

CDC, as a quick fix have you ever tried disconnecting your tweeter?
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