Unknown OT.

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12bz7
Junior tube assistant
Posts: 11
(5/25/05 8:38 am)
Reply   Unknown OT.
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 I have an OT that is marked on the primary side -9K ohm- P1, B, P2 then on the secondary side 16 ohm,8 ohm,0 ohm. What type of output tubes would this trans suit? It looks to be the size of a deluxe reverb type.
thanks for any help.
 
OldHouseScott
Hey get your own solder
Posts: 222
(5/25/05 8:45 am)
Reply   Re: Unknown OT.
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 A pair of 6V6's or EL84's would work fine.

OldHouseScott
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12bz7
Junior tube assistant
Posts: 12
(5/25/05 9:20 am)
Reply   Unknown OT.
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 Thanks OldHouseScott ,
That'll be my next build then, a nice little 6v6 combo.
 
ernie jr
Senior tube assistant
Posts: 180
(5/25/05 9:22 am)
Reply   o/p tranny
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 or use the scondaries as 4 ohm and 8 ohm, this would make the primaries look like 4500 ohm and you could use 6l6 or 6550's, if i could handle the power.
ernie
 
12bz7
Junior tube assistant
Posts: 13
(5/25/05 9:41 am)
Reply   o/p tranny
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 Thanks for the info Ernie but I'm not really sure if this old
tranny would be up to it. It's a pull from an old organ amp which ran a pair of 7868 output and 2 x 6au6 preamp tubes. I really don't know enough about Ots to know or to test that's why i played safe and posted here.
 
phsyconoodler
I will work on all amps
Posts: 390
(5/26/05 1:15 am)
Reply   Re: o/p tranny
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 I have a Bogen PA amp that has a pair of 7868 tubes and it puts out 35 watts.The plates have about 440 volts,right in the 6L6 or 5881 category.
 
 
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