[dre7]

O.K. So would I be correct in assuming the reason for this is that
manufacturers such as Marantz, Fisher, McIntosh, etc. could conveniently
get power transformers wound to their exact specifications? I mean, we can
too, but for obviously more money and effort. I personally like choke input
power supplies, but all the ones I've built have been so because I've had to
bodge something out of scrounged iron.

Andrew


Bret Ludwig wrote in message
oups.com...
On Oct 2, 4:02 pm, "dre7" wrote:
Hey RATs:

Can anyone recall a "classic" commercially made amp that used a choke
input?
Not a guitar amp, but hifi. Been sifting through schematics but haven't
happened upon one yet.

Andrew

You mean a choke first POWER SUPPLY? No, none.

None of any size, guitar or hi-fi. Some early Hammond amps, in
Hammond tone cabs I think.

RCA used a half-choke-input supply on the famous design using
regulated screen operation of two 7027s in lots of RC manuals and the
HF-110 pamphlet. Not a produced design. But a virtuoso effort that
beat Mc numbers (but probably at higher AC power and tube consumption)
with off the shelf parts.