MagneQuest Forum

RE: Humming Hammond

63.164.202.130

In Reply to: RE: Humming Hammond posted by RPM33 on July 31, 2007 at 14:36:32

THey don't know the words to the song, so they just hum along...

The "200" series Hammond PTs are basically operating while "skating on thin ice" ;-) With their 115VAC primaries, and todays over-120VAC line voltages, they run hot in more ways that one... And on a steel chassis, the stray magnetic field can make the whole chassis resonate at 60 Hz ;-(

The "300" series (example, use a 372FX instead of a 272FX) are better quality and more conservatively rated. They have dual, tapped primaries so they are universal in that they can be roperated on 100-120 / 220-240 VAC 50/60 Hz. They do cost more and may be physically larger.

Of course, trhe earlier suggestion of using an MQ power trannie is still the best ;-)

/ed B in NH
real radios glow in the dark

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