[Amps] Tube Advice Needed

[Charles Rushing]

Hi All,

 

I'm new to this list so forgive me if I've missed the appropriate thread.
Recently I purchased an Alpha 76A (3-holer) without tubes.  My intent was to
convert it to a pair of 3C(P)X800A7 tubes, but so far I haven't been able to
find them at anything less than breathtaking prices if at all.  While
pondering alternatives I ran across numerous 3C(P)X1500A7s for sale in the
$200-$300 range.

 

Does anyone have any experience with or advice on converting this amp to one
3C(P)X1500A7?  I realize it would require a socket replacement, but
shouldn't require an additional filament transformer.  It seems that a .1
ohm or so resistor in the filament line should drop the voltage down to the
required 5 volts.  Does this seem doable or am I way off base here?

 

73s & Happy New Year,

Chuck

WA5MUV