Parametric EQ setting

[da12b 10+ year member]

Can a Parametric EQ be set without the use of an RTA? I did some research and this site http://persiconi.com/wrx/downloads/empegsound/sound8.htm says all you need is a SPL meter or level meter, but it sounds like it is to set a graphic EQ, yet stating that it is to set a Parametric EQ. I checked http://www.bcae1.com under "Equalizers," and I'm now confused. Basicly how do you set it up?

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[JimJ 5,000+ posts]

How many bands are you dealing with?

 

[da12b 10+ year member]

two, front and rear.

Parametric eqs are different from graphic eqs. Just to let you know.

I want to know how to set the "Q", at what Hz, and at what gain. Is there a formula to figure it out? Or is it on the site http://www.bcae1.com

 

[Beat_Dominator 5,000+ posts]

You set it at the freq. that is too loud/quiet and adjust the level of the PEQ up/down. The Q is best thought of as having a "width" of the frequencies that your PEQ will affect.

Let's say you want to remove a hum, a hum or buzz will usually be at a particular freq..... say 100hz. To remove that hum, you can make the PEQ act like a notch filter and make the Q very small/narrow centered at 100hz. This will have the least affect upon the nearby frequencies, like 105hz to the one side and 110hz on the other.

Conversely, if you have a wide range of frequencies missing, like 1,000hz - 1,80hz. You would center the PEQ in between them at 1,400hz and use a high/wide Q to affect the entire range of frequencies.