Posted by John Swenson (A) on July 04, 2006 at 16:03:44

In Reply to: Re: 9 Watt Transconductance Amp posted by C.Y on July 4, 2006 at 06:44:16:

Here is the link for the original El84 version. It was a little under powered (even for Lowthers) with large full scale music so I decided to make something a little larger and went overboard, the result is an 813 based SE parafeed version that goes up to about 30 watts! Its still a work in progress but sound fantastic even in its current breadboarded version.

The El509 version was going to be what I made until I got hooked on doing a 813 version.

There are a lot of people with fostex full range speakers that want to try this type of amp but the El84 was just too wimpy so I have gotten a lot of requests for the larger but still inexpensive version.

Thanks for the interest!

John S.

• Original EL84 transconductance amp   (Open in New Window)