RadioBanter - View Single Post

October 17th 04, 11:36 PM

In article ,
says...

What's the best tube type to use for a voltage controlled current sink,
with respect to linearity?

I am building plasma tweeters, with a DC glow discharge modulated by audio
(similar to US patent 4,219,705, but I'm using microhollow discharges
(MHCD) as cathodes for the larger discharge to remove cathode fall
instabilities; this technique was unknown during the time of that patent).
My power supply is 2700 V at 400 mA (200 mA for each of two channels for a
stereo setup), ripple filtered to 0.01 V. I'm hoping to have the discharge

So, 1080 watts of heat dissapation or more just to hear high frequencies???

Is there no other more sensible use of energy for you?? It would seem
that there are several types of tweeter choices that require no energy
other than audio drive that would still perform 10 times better than
your ears ability to determine distortion, and at least 5 times better
than any pickup devices ability to change input sounds into electrical
output.

If you really want to waste energy as heat dissapation, and impress your
audiopill lacky buddies, use a 304TL, or 304TH. 300 watts of plate capacity
with a super high perveance that looks like a plate to heater short if
you drive the grids a little bit positive.

You should turn yourself in to the EnergyStar folks, and do about 100
hours of community service. The crime??? More imagination than true
ability to determine accurate sound reproduction quality.