Hoffman Amplifiers Tube Amplifier Forum
Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: terminalgs on August 20, 2012, 06:12:12 pm
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A year ago there was a post to see if anyone had tried the EH 6973. there wasn't much response, so I thought I'd new topic/bump it. There are a lot of old Valco and Magnatone amps with 6973s, so I had high hopes.
I can only find threads in hifi forums, and those guys aren't impressed. anyone here try them?
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Funny that this should be mentioned right now. A friend brought me an old amp, which I'm not sure of the brand. It has a pair of the 6973s in PP output. I was at the Schematic Heaven site for an hour trying to match a schematic for this amp. I looked in the "bargain basement" section, which is likely where I may find something. So far, nothing found which has three 12AX7s in the preamp section etc, but I did find one with a trem, which this one doesn't have. Then again this amp may have been messed with etc The one I found is a Valco 510-54.
If this amp was mine, I would toss the 6973s for something else. The price on those when I looked was 54 bucks each, more than the amp is worth.....
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I couple year ago, I converted an old amp PA that used 6973's to a Supro 6424 amp (without the trem). I used EH 6973's and have been pleased.