In Reply to: Re: "Pi Pad" implemented with series xover posted by Wayne Parham on February 12, 2002 at 17:07:46:
the values shown in the xover doc, using the R1/R2 network to split the power. The only difference is R1 was shown in one to be 16 ohm (10 dB) in series with the driver, the other has 25 ohms (12 dB). Both used the same 16 ohm R2 and 0.47 uF cap. Then I used the network for the HF portion/load in a series xover I use, in place of the adjustable lpad.
I want to play some more, with extended listening, to determine if 10, 11, or 12 dB will work out with the widest range of material in regard to overall tonal balance between the bass and HF in my listening environment. Discrete steps will be easier to get more consistent results with than the wide range, from bad to OK to bad, of adjustable ones. I agree with Wayne, adjustable lpads have no place on a speaker where curious fingers may stray...Sam
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