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Re: Music Instrument Tube Amps conversion to Tesla use?
Original poster: "David Sharpe by way of Terry Fritz <twftesla-at-qwest-dot-net>" <sccr4us-at-erols-dot-com>
About 2 years ago, a physics student I was mentoring (college major now Ph.D.
candidate) and I built a RF excited CW VTTC using 807WA (ruggedized
807, WW2 vintage, NOS). We used 3 tubes in parallel and two banks of
3 in a push pull hartley oscillator configuration. With 800V on plates and 350
on SG (DC powered) with 600W input we got a whopping... 2" streamer!!!
Great for exciting a high vacuum RF CO2 laser, but not very exciting (for the
effort) for arcs and streamers. Your 6L6GC's are about the same plate
rating (30W) but much lower voltage (450Vbb if my memory is right), which
will reduce the streamer length even more. FWIW.
Dave Sharpe, TCBOR
Chesterfield, VA, USA
Tesla list wrote:
> Original poster: "albert hassick by way of Terry Fritz
> Hi Ralph. OK, I have had three posts so far on these Fender and Peavey
> tweed amps. So far everyone feels that I should sell these buggers on
> Ebay or etc. But these amps are sans speakers and the Twin Reverb has
> been cut away from its cabinet and is now placed atop a Fender Showman
> Speaker box with two Electrovoice 12" 600watt peak to peak speakers,
> anyway the Bandmaster cabinet is good for 300 watts rms plus.But one of
> the vintages has no cabinet. The one that has a cabinet is a Peavey
> vintage 4=10" cabinet, but all four of the speakers are gone And have
> been placed into a PA system. The amp is used with a Acoustic large 18"
> speaker cabinet Speaker box. The Peavey twin twelve has no cabinet and
> the amp at 187 watts stands free, but I still want to convert these amps
> into a VTTC if a all possible. No one on Ebay would want a amp without
> its speaker box, at least I do not think so, this is why I would like to
> convert these three orphans into a Tesla VTTC if at all possible. So I
> ask again, can I series the three amps with 12 6L6GC tubes into a Tesla
> VTTC> Al.
> > <Parpp807-at-aol-dot-com>
> > In a message dated 6/6/01 12:47:48 PM Central Daylight Time,
> > tesla-at-pupman-dot-com
> > writes:
> > << The amps are OK but the filter banks are
> > weak, but I do not think that those filter caps would even be used
> > with a
> > VTTC. >>
> > The 6L:6 does not make for a good VTTC as you are much better off
> > using a
> > triode for Class C operation with a tube like the 811 or 833. It
> > sounds like
> > you have three good
> > stereo amps, each with push-pull 6L6 output. They are valuable as
> > amplifiers.
> > Check out some of the prices on the auction place.
> > I assume you are referring to the power supply filter caps. If they
> > are a bit
> > leaky they are easily replaced. I would not wreck those amplifiers.
> > Cheers,
> > Ralph Zekelman
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