Quote:


Most likely a single graphic EQ will do - those that I've used have generally 24 dB of range (+/-12 dB). Where he has no, or relatively flat loss, he can set those at -12 dB, and then go up from there as necessary, up to a 24 dB difference from where it's 'flat'. Then the big gain knob can make up for the 'flat' quite easily.




Well, my point, which I didn't really go into, is that one can easily get into the situation where the amplification from the first EQ would be already overdriving the input of the second EQ into clipping at that point. Most of the EQs one is likely to find used from home stereo use are going to be active electronics. A lot of them boost or cut +/-15 dB instead of 12 as well. At that point, we are talking a possible 30dB increase in amplitude at the end of this chain, which would likely be overdriving the standard consumer line input considerably.

And clipping, or flat-topping of the wave should be avoided because it will, like a square wave, start to generate close to infinite odd-order harmonics, which I think would likely make hearing the fundamental that much more difficult. I don't think we need a harmonic-rich environment here. And it could easily be a situation where he will not be able to detect clipping happening unless and until it reaches the point of disaster.

Even a pair of the legendary Klark-Teknik (sp?) passive Graphic EQs would likely have a time of it when cascaded like that, although I should think they'd be less susceptible than the less expensive active EQs.

I think that Filter Ringing would also rear its ugly head kind of quickly.

--Mac

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