On Jan 17, 8:05 pm, Eeyore
wrote:
Andre Jute wrote:
The ultrafidelista generally use AC fils because they sound best,

Because hum is good for fidelity ?

Graham

Yo, Poopsta, you have my sympathy. It must be really distressing
living down there in Boombox World as you do among people constantly
seeking to add distortion to their music. How many years does one have
to spend down there in Audio Hell before you start believing everyone
else is a moron without taste or musical education?

But your prejudice doesn't apply to people who know what they do with
tubes, who have the money for DHT and the skill to apply the
accumulated knowledge. Time to start educating you, Poopie. Say after
me, one hundred times: Properly implemented DHT DO NOT HUM. Proper
implementation almost never requires regulation in DHT. It means
paying attention to grounding and to the sizing and physical placement
of filament balancing devices (small subcircuits often called
humbusters, which is perhaps where you got your silly prejudice).
We're not talking about some little guitar-amp with 12AX7 of the sort
you are no doubt familiar with, we're talking about the mighty 300B.
Proper implementation of 300B fils is shown on my netsite, and
probably discussed in one of the chapters of The KISS Amp. I'll leave
you find the circuit and the text; at least that'll keep you out of
the pub and other dens of vice with boomboxes where you apparently
gather the misinformation you spread like disease on UKRA and RAT and
the protechtube conferences.

Don't bother grovelling in the dirt; a simple deep bow and a sincere
"Thank you, Master" will do the business.

Andre Jute
Charisma is the talent of inducing apoplexy in losers by merely
existing elegantly