Vintage Blue Box 10-band EQ Build - Some Q's

[strungout]

Yeah, you could get dead-on values with series/parellel-ing. I just didn't feel it was that important. That and the fact it's gonna make for a bigger board. So I kept all my resistor values to, at most, a 5% tolerance. As of now, I haven't even re-done my breadboard to see if the frequencies suggested by R O Tiree will give me what I need. I'll hear it if it does!

As an example of exactitude, here are the band specs of the original 'brand' EQ (using the AMZ calculator):

Band      Freq       Q
31.2       32.3       2.23
62.5       63.4       2.43
125        127.9     2.78
250        241.1     2.07
500        490.3     2.09
1k         1028.7     2.24
2k         1981.3    2.57
4k         3874.5    2.65
8k         7781.3    2.65
16k       15392.2  Shelf

Seems more than approximate...


EDIT: I changed the component for the new frequencies, a LOT more components went into it I find it pretty useful for shaping the signal before a distortion stage. It's late now, so I'll have to test it some more tomorrow. And try it in my effects loop. The only problem I have is it's noisier than the the previous one. Haven't been able to find a bad connection so far. May be because I have so many resistors popping like antennas above my board.