[sdiy] Fire bottle ladder filter

Magnus Danielson cfmd at swipnet.se
Sun Apr 21 16:01:55 CEST 2002


From: Tim Ressel <madhun2001 at yahoo.com>
Subject: Re: [sdiy] Fire bottle ladder filter
Date: Sat, 20 Apr 2002 18:40:04 -0700 (PDT)

> --- Magnus Danielson <cfmd at swipnet.se> wrote:
> > How did you wire things up? Cathode to lower stage,
> > grid to bias
> > resistors and anode/plate to cap? Just plain
> > drop-in?
> 
> Yep. I just removed the transistors and plunked in the
> triodes. The resistor bias chain is now has 180Ks in
> it.

Right.

> The beastie still needs work of course. But it looks
> promising.

Good.

I'll scratch my head some on this. I'll see if I can lay my hands on
some suitable tubes tomorrow.

Cheers,
Magnus



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