Jeff,
If an amplifier (any amplifier including the SB-200) is linear, and has
a gain of 10 dB (for example), then 10 watts will produce 100 watts
output, 15 watts goes to 150, 50 watts will produce 500 watts output, etc.
I am not familiar with the modifications to the SB-200 for the
'reduction of drive', but if the unmodified or modified amplifier is
truely linear, there should be no need for any additional work (see
statement above). OTOH, if the 'reduction of drive' mod increases the
gain of the SB-200, then it may be useful unless it produces non-linear
operation of the amplifier.
The input power required to drive the amplifier to *full* output is
quite a different matter - I would not expect a 10 to 15 watt input
would be capable of producing full output from the SB-200, but the amp
certainly could be used as a gain block element and provide a good
output signal.
73,
Don W3FPR
Jeff wrote:
Hi all, this might be a dumb question, but the Heathkit SB-200 has several
modifications that can be made to it, one of which is the reduction of drive
power to excite it.
Does anybody have any idea what the lowest power required to excite an
SB-200 amp is?
Without mods, it is around 100 watts, but I use to have one with the reduced
drive mods, and I drove it with 30 to 50 watts for around 300 watts out. I
never tried testing the lower end with that mod. Though.
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