Posted by Wayne Parham [ 65.69.120.160 ] on March 07, 2005 at 18:30:11:
In Reply to: By-Pass caps? posted by BillEpstein on March 07, 2005 at 16:16:14:
That's right, Bill. You can add a 0.1uF cap to the 0.33uF cap by connecting them in parallel to form 0.43uF. If you add a couple of 0.1uF per side, you'll have 0.53uF. Raising capacitance across R1 will bring up the treble and bring it in a little sooner.
The stock value is 0.47uF for all networks from 6dB to 12dB. The resistors R1 and R2 set the padding level:
Network R1 R2 C1
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6dB 12 30 0.47
8dB 12 20 0.47
10dB 16 16 0.47
12dB 25 16 0.47
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