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Syn5050 bias inside?

Posted: Sun Dec 02, 2018 4:36 am
by Henk-Jan
I saw somewhere a picture of the inside of the Syn5050 poweramp.
I couldn't see bias adjustement pots/trims.
Does the Syn5050 have bias adjustments inside?

Re: Syn5050 bias inside?

Posted: Sun Jun 16, 2019 2:59 pm
by TubeMan5150
Bumping an old thread to see if anyone has any additional information if the Syn 5050's bias can be adjusted. I opened mine, looked around inside, but did not see any trim pots.

Anyone?

Re: Syn5050 bias inside?

Posted: Tue Jun 18, 2019 9:43 am
by Jaded Faith
I have never seen one. However, it was designed by Steve Fryette and I have repaired and serviced lots of his amps. His bias pots tend to be a small hole about 1/10 of an inch with the bias trim pot mounted under the PCB on most of his amps. I could imaging the Synergy power amp being the same, as we designers always have a personal style that you can predict if you know what you are looking for. Hope that helps.

Re: Syn5050 bias inside?

Posted: Thu Jun 20, 2019 4:32 am
by TubeMan5150
Thanks for the tip Rob. Next time I pull the power amp out of my rack I'll look a little closer.

Re: Syn5050 bias inside?

Posted: Mon Jun 24, 2019 7:44 am
by Jaded Faith
You are welcome. I can't tell you how many times I had to hunt for the hole to bias one of Steve's amps. Easy to miss for sure.

Re: Syn5050 bias inside?

Posted: Fri Sep 06, 2019 1:15 pm
by TubeMan5150
To close the loop on this topic...

The Syn5050 is non-adjustable fixed bias. There are no bias pots inside the amp. After I couldn't find any bias pots inside the amp I reached out to Bruce Egnater and he confirmed for me Steve Fryette's Syn5050 design is non-adjustable fixed bias.