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previous: Trace Allen Rich; Are the 7199's the s... -- 12/2/1998 8:40 AM View Thread

Re: 7199 and 7408 tubes...is anyone familer with these??

12/2/1998 10:49 AM
Steve M.
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Re: 7199 and 7408 tubes...is anyone familer with these??
Trace  
 
> Are the 7199's the same pinout as the  
> 12AX7's? I'll just re-wire the sockets  
> instead of playing "Spin-the-tube" and  
> praying that I'll get a sweet sounding 7199.  
> Talk with yah soon!!  
 
The 7199 is a small signal pentode and triode in the same envelope, it is very different from a 12AX7, which is two similar triodes in the same envelope. To use a 7199 in place of a 12AX7 you'd have to rewire the circuit. Unfortunately, there is no direct replacement for a 7199, althought there are several similar tubes with different pin outs, e.g. 6U8, 6BL8, 6GH8 among others.  
 
I got a replacement board for my Dyna ST-70 that uses 6GH8s as they are cheaper and readily available, unlike the 7199.  
 
Also, I've heard it said that the Sovtek 7199 isn't a real 7199, it is a rebased 6BL8.  
 
Hope this helps,  
 
Steve

 
Replies:
Trace Allen Steve M; Yes this helps al... -- 12/3/1998 11:47 AM