heathkit sb-220

[Macoman105c]

how much drive into a sb-220? book says 100watts so that must mean 200 peak???

[MDYoungblood]

Hello Macoman105c,
Welcome to the forum. A quick answer to your question is "No", if you are reading the original manual it means that 100 watts is the amps maximum input. Most operators using that amp has their input set at around 50 to 60 watts and that usually drives it up to full output. Now I am not saying it wouldn't handle more but frying the tubes for a couple more watts just isn't economical.
As a new member to the forum could you post a intro here, [Please login or register to view this link] , so others can say "Hi", thanks.

3's

Greg

[51]

Hello Macoman105c,
A quick answer to your question is "No", if you are reading the original manual it means that 100 watts is the amps maximum input. Most operators using that amp has their input set at around 50 to 60 watts and that usually drives it up to full output. Now I am not saying it wouldn't handle more but frying the tubes for a couple more watts just isn't economical.


3's

Greg

exactly, 100w pep input but usually 50w-60w gives full output.

[Slim Pickins]

I drive my SB200 with about 50-60w for full output.

[Crusher]

Remember, that amp was actually made for SSB. The amp should only deadkey about 250w carrier out. The plate transformer isn’t made for a big deadkey.