JFET buffer help!

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rfgordon
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JFET buffer help!

Post by rfgordon »

One of my amp clients wants me to build a buffer/splitter--one in and three out. There are a couple of helpful starting points on the web, one of which is this design for a one in/three out JFET buffer:
http://www.muzique.com/lab/splitter.htm

That looks like a good start. However, if used to feed two or more amps, ground loops can form. So I'm wondering if I can use the transformer output setup on the enclosed schematic from a buffered A/B/Y box, but put them on the JFET outputs?

Anyone have enough experience with solidstate stuff to advise here?

Thanks
Rich Gordon
www.myspace.com/bigboyamplifiers

"The takers get the honey, the givers get the blues." --Robin Trower
felix31
Posts: 1
Joined: Mon Oct 15, 2012 8:26 pm

ground loops

Post by felix31 »

Hi,

You cannot use a transformer output setup on the enclosed schematic from a buffered A/B/Y box it will still produce a ground loops. Just lift the ground on your amplifiers and it will remove the ground loops.

Goodluck!!
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Structo
Posts: 15446
Joined: Wed Oct 17, 2007 1:01 am
Location: Oregon

Re: JFET buffer help!

Post by Structo »

The Suhr Mini Mix uses isolation transformers to avoid ground loops.
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Tom

Don't let that smoke out!
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