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big-daddy-59 · June 17th, 2009, 11:43 PM

Pulled the trigger on the parts for my first amp build yesterday... but I could use a little advice regarding a mod I'd like to make to use a 6L6GC as the power tube. Take a look

Tele-Dave · June 18th, 2009, 12:05 AM

Make sure you get the proper OT. The 6L6 likes to see a load resistance of about 4200-5000 ohm, whereas the 6V6 likes to see 6600-7000 ohm.

petebradt · June 18th, 2009, 12:41 AM

Quote:

Originally Posted by Tele-Dave

Make sure you get the proper OT. The 6L6 likes to see a load resistance of about 4200-5000 ohm, whereas the 6V6 likes to see 6600-7000 ohm.

You beat me to it. If you try to run 6L6s in a stock 5F2A you're liable to pop the OT.

big-daddy-59 · June 18th, 2009, 02:35 PM

okay , upgrade output tranny.
Would this be a good choice?

muchxs · June 18th, 2009, 02:45 PM

5F2A w/ WSE15 = NO PROBLEM!! Use the stock 470 ohm cathode resistor and you'll be able to switch from 6V6 to 6L6 any time.

Your taps become 4, 8, 16, 32 with a 6V6 if you want to get hung up about it. A 10k load on a 6V6 is a little high. You have a choice of a little high or a little low, I'd go high.

There's enough room on the 5F2 chassis to add a barrier strip between the circuit board and the PT for the extra taps.

June 17th, 2009, 11:43 PM	#1 (permalink)
big-daddy-59 Tele-Holic Join Date: Mar 2009 Location: Castlewood,VA Posts: 675	advice needed for a 5f2a mod Pulled the trigger on the parts for my first amp build yesterday... but I could use a little advice regarding a mod I'd like to make to use a 6L6GC as the power tube. Take a look

June 18th, 2009, 12:05 AM	#2 (permalink)
Tele-Dave Tele-Meister Join Date: Jan 2009 Location: Location: Location: West Virginia Posts: 475	Make sure you get the proper OT. The 6L6 likes to see a load resistance of about 4200-5000 ohm, whereas the 6V6 likes to see 6600-7000 ohm. __________________ _____________________________________________ "no complaints yet, but it's still early"!!!

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June 18th, 2009, 02:35 PM	#4 (permalink)
big-daddy-59 Tele-Holic Join Date: Mar 2009 Location: Castlewood,VA Posts: 675	okay , upgrade output tranny. Would this be a good choice?

June 18th, 2009, 02:45 PM	#5 (permalink)
muchxs Poster Extraordinaire Join Date: Aug 2004 Location: New England Posts: 6,001	5F2A w/ WSE15 = NO PROBLEM!! Use the stock 470 ohm cathode resistor and you'll be able to switch from 6V6 to 6L6 any time. Your taps become 4, 8, 16, 32 with a 6V6 if you want to get hung up about it. A 10k load on a 6V6 is a little high. You have a choice of a little high or a little low, I'd go high. There's enough room on the 5F2 chassis to add a barrier strip between the circuit board and the PT for the extra taps.

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