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6sn7, 6cb5, 12au7, 12sn7 what to do with em'

rudedogg

rudedogg

AK Member
Subscriber
image.jpeg My dad brought me around 300+ tubes from flea market a couple days ago. I started looking thru the cache, and found some nice stuff Mullard 12ax7 long plate, 5u4 rectifiers, 5y3's a ton of old useless TV tubes. But there are a ton of these rca, tung sol, sylvania, many brands, 6sn7, 6cb5, 12au7, 12sn7, and many more close to that. I researched a bit and found they are decent preamp tubes. What should i do? Can i test them, and maybe build a cool preamp?
 
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If you want to build something Aikida sells nice preamp kits that use either 6SN7 or 12SN7 tubes. Look for there octal preamp board. It's supposed to be highly rated. I have one here that's waiting for me to put together.

BillWojo
 
Thanks Bill,,those look very nice! I have to find a tester, then i can order the board. Looks like they sell the power supply boards too
 
image.jpeg Here is a little MULLARD 12ax7, looks unused. I have to find a couple more in the mountain of tubes the ole man brought me. I think the rectifier is a 5y3 but many of the unboxed tubes are hard to read by now
 
I picked up an old Mercury tube tester{emissions} and cant believe I waited as long as I did.I run 3 separate tube rigs in my home and I buy /rehab/resell 5-10 tube amps a yr and not having a tester was a pain as most people want to know the shape of the tubes when buying amps/preamps.
First thing I did was get familure with testing and tested over 100 tubes I have for backup in my units.

hunter
 
12SN7 pairs nicely with 1625's to build a Williamson amp. 1625 is a 12 volt version of the 807 with a different, odd base. Think 6L6GC but for peanuts. The only hitch is you need the proper power transformer for it.
 
gadget73 said:
12SN7 pairs nicely with 1625's to build a Williamson amp. 1625 is a 12 volt version of the 807 with a different, odd base. Think 6L6GC but for peanuts. The only hitch is you need the proper power transformer for it.
Click to expand...
I don't know what a Williamson amp is...but i will research it. I think there are some 6l6GC tubes in the boxes. I am just having so much more fun since discovering tubes, and that with a good soldering station, some test equipment, one can restore, mod, or create something! Maybe i can pull off a build, just need to find myself a tube tester now...
 
gadget73 said:
12SN7 pairs nicely with 1625's to build a Williamson amp. 1625 is a 12 volt version of the 807 with a different, odd base. Think 6L6GC but for peanuts. The only hitch is you need the proper power transformer for it.
Click to expand...
6L6GA they are 19 watts not 35 like a GC
 
Hey Ian, did you gomto that vintage show in Natrona Hts today? I wanted to drive up there, but woke up in bad pain this morning, ugg
 
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