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In Reply to: RE: Siemens E83CC and other Siemens 12AX7 varieties posted by posbwp55@msn.com on October 19, 2009 at 00:53:22
These are very nice tubes, indeed! really, it's hard to find any Raytheon or Tungsol made tube that distracts from the overall tone. I think some folks kinda give up on these tubes (esp the mil spec ones) because they don't give them time to break-in. It's like some mil spec Russian tubes. They can sound very constricted, even constipated, at first. But once they break-in, some of these tubes can have a very long steady-state tone that's hard to duplicate. Kinda cool thing about good tubes.
Have yoyou tried a Telefunken 12AX7? The sonic to my ears is fairly close.
Telefunken and the Siemens tubes were stock, OEMed, pre-amp tubes,of several vintage amp makers.
Look for Oem Sherwoood (Siemens or Teles I own 3 Sherwood amps) Heath, Eico, Scott, "The Fisher" and so on. I can't say who used what other than Sherwood.
It's probably the least expensive way to get them. Smart dealers sell them as Siemens or Telefunkens OEM will not persuade them into heavy discounts. However on ebay you can find them cheaply.
Ask a vintage tube amp aficionado what to look for specifically,to get Siemens.
It is a shame that even if the amp came to me tubed up, the tubes were frequently replaced. A result caused by tube pullers or because they wore out.
Siemens long plate double getter support ecc83 was a very nice and open tube, but try to find old Tungsram welded plate silver pin ecc83.
Rgd.
Tungsram is a manufacturer that Tubemonger used to have in stock but I forget which types.
He gets some really hard to find goods from time to time like the Brimar ECC32 CV1988 GTY from Scratchscay (SP?.)
I have used both the smooth and ribbed plate TFK ECC83. I think for overall tone some of the Munich S&H sounded better. Though I do like the smooth plate TFK that I've tried.
Tungrams are real sleepers, IMHO. They can lend quite a powerful tone to the system. I find they lack a bit of the detail that TFK, S&H, or Valvos have. But, in guitar amps, Tungrams can really bring out great overtones and crunch when pushed hard. I use them in small SE amps, as they help give the amp nice overhead, in kind with bigger push-pull amps. Very nice tubes.
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