[Hallicrafters] SX-16 help

[rrkrr]

Antique Electronic Supply has general replacement Hammond audio 
interstage transformers for single ended to push-pull, (or you could buy 
them directly from Hammond).
AES shows one that has a 9:1 secondary/primary impedance ratio, and 
another that has an impedance ratio of a bit over 2:1.  I suspect you 
want the latter.
Or you can build a vacuum tube phase splitter of any of several types 
instead of replacing the transformer.
My reference book for tube audio is "Valve Amplifiers" by Morgan Jones - 
c2003, (www.newnespress.com) - lots of good practical information.

Bob K4ERR

W7QHO at aol.com wrote:
> In a message dated 2/14/08 4:44:44 AM, holden7471 at msn.com writes:
>
>
>   
>> Anyone have a driver transformer for said unit (between the 6R7 AF/Det and
>> 6v6 output tubes), or info on a suitable replacement? The BAMA files do not
>> tell much about it.
>>
>>     
>
> Here's another trick you can try if the secondary of your original 
> transformer is still OK.   Convert the triode section of the 6R7 into a resistance 
> coupled amplifier and connect the output coupling cap (.05 or so) to either side of 
> the   transformer secondary.   Works FB.   From my 42 handbook try   47K 
> plate   and 1600 ohm cathode resistors.
>
> Dennis D. W7QHO
> Glendale, CA
>
>
>
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