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Old 18th December 2010, 05:18 PM   #2201
Zen Mod is offline Zen Mod  Serbia
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just search for "cottage" files in Pass Labs

replace active stage with Jfet buffer and voilla

Papa already give enough breadcrumbs
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Old 18th December 2010, 07:42 PM   #2202
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I have an article in preparation. It will not be the B5, as the
moment I publish an "official" schematic the rip off artists jump
to the task.

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Old 19th December 2010, 12:03 AM   #2203
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"#$%^&*"
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Old 19th December 2010, 12:15 AM   #2204
EUVL is offline EUVL  Europe
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Choky already told you how to do this. It cannot be simpler.

Else you can also go through the active filter pages of Linkwitz, and replace all the opamp untiy gain buffers in the Sallen Keys with JFET (B1) :

Active Filters

Even balanced versions are easy enough.


Patrick
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Old 19th December 2010, 03:45 AM   #2205
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Quote:
Originally Posted by flg View Post
"#$%^&*"
You're just looking at this the wrong way. You will get
what your heart desires and you will have participated
in creating it.

And the rip-offs can go suck eggs.

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Old 19th December 2010, 08:49 AM   #2206
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Quote:
Originally Posted by Nelson Pass View Post
And the rip-offs can go suck eggs.
That's the spirit.
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Old 19th December 2010, 08:53 AM   #2207
Vix is offline Vix  Yugoslavia
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Nelson, thank you very much. I am really thankful and I even like the fact that you're not publishing complete "official" schematics, because we've all seen what happened in the past. Luckily, by now we have learned to "connect the dots", so even if something we come up with is not the same as original, it's fairly close. One that understands the operation of basic buffer blocks, Sallen-key topology, and a bit of Open baffle/fullrange nature may not find it difficult to assemble B5-like circuit. So, it's a learning experience, and and I'm also thankful to Mr. Linkwitz for such nice explanations about Open baffles on his website.

Regards,
Vix
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Old 19th December 2010, 10:07 AM   #2208
Itsmee is offline Itsmee  England
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Quote:
Originally Posted by EUVL View Post
The link doesn't work
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Old 19th December 2010, 10:11 AM   #2209
Zen Mod is offline Zen Mod  Serbia
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try other browser

it works for me with FF

or go to LL site , scroll to projects , click on active filters
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Old 19th December 2010, 10:46 AM   #2210
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Works for me, both in FF & IE.

Patrick
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