Re: Out of curiosity does the absense of transformers on these amps....

Because it's basically two single ended amplifiers wired together bridged (differentially) the DC components cancel, by and large, with the help of a DC offset trimpot. I monitor this roughly monthly, or as the mood hits, or if I see or hear a need to do so. After experiencing a few tube section failures with NO audible results (NONE) I'm convincing they're bulletproof. After a complete retubing, I find no failures in over a year of daily usage, with 16 output tubes, a pretty good record. Ralph describes the basic circuit best.

a quick otl primer (Open in New Window)

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Topic - Which Amps/Brands Offer Best Protection from Blown Output Tubes? - Jerry O 12:54:27 09/09/03 (10)

Only 1 brand to rely on? All else goes into melt-down??? - Jerry O 12:22:18 09/10/03 (5)

Dude....if you're worried about failures, stick with SS......... - Chris Garrett 19:45:29 09/11/03 (4)

Re: Dude....if you're worried about failures, stick with SS......... - steve oda 23:17:52 09/12/03 (3)

Jensens....... - Chris Garrett 12:26:45 09/13/03 (2)

Re: Jensens....... - steve oda 02:40:56 09/14/03 (1)

Thanks Steve... - Chris Garrett 09:43:54 09/14/03 (0)

Re: Which Amps/Brands Offer Best Protection from Blown Output Tubes? - LineArrayNut 17:01:22 09/09/03 (3)

Out of curiosity does the absense of transformers on these amps.... - Chuck Y 17:09:23 09/09/03 (2)

Re: Out of curiosity does the absense of transformers on these amps.... - LineArrayNut 18:18:14 09/09/03 (1)

Thanks for the input. nt - Chuck Y 18:49:30 09/09/03 (0)

Follow Ups

Re: Out of curiosity does the absense of transformers on these amps.... - LineArrayNut 18:18:14 09/09/03 (1)

Thanks for the input. nt - Chuck Y 18:49:30 09/09/03 (0)

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