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In Reply to: RE: OK, now for the steps toward the Full Monty! posted by bartc on February 21, 2009 at 18:25:49
Someday........like I said money is really tight now. This is quite a fine start. I've built the 3 descending value AC filters before as well. Thanks for the reply.
ET
Question "Authority", the mainstream media sucks - Go Independent and hold BOTH parties accountable instead of just the other guys!
I need music to help forget the reality of today
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I'm always on a tight budget. Don't ask what it's like now with a serious near depression out there...
Meantime, what makes the 3 value C in the R-C array easier and maybe cheaper is that the caps don't have to be X-rated for speaker cable current level applications. Al recommended and I use exclusively silver mica caps for this application, which I get dirt cheap at a surplus store. YOu can use ordinary Rs, you don't have to spring for the online purchases, to get this started, though admittedly the better Rs do sound better.
TI-Shield ain't cheap and you have to order a sheet at a time, sadly. Silver wire and spades are not expensive in such small quantities though.
You have done something that I always thought of doing: using a simple copper enclosure around the R-C. Al thought I'd have problems with this. I was merely modeling what I thought I saw in other commercial R-Cs. In the end the TI-shield, which is not simply copper, did the trick very very well. You might try the same grounding trick with your copper tape enclosure, though, to see if it helps at all.
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