Output tube radiation exposure - thoughts?

Yup, A1marg is correct.

Audio equipment does not operate at UHF (Ultra High Frequencies) or related energies. No sweat man - only if you listen to "COSMIC OPERA" with a freq range of 2250 kHz to 10 gHz on a 100, 000 watt system with your head up against the transmitter dish - yikes!!

"Honest1
I thnk it has more to od with the voltage the tubes operate at, rather than the frequencies they are amplifying. I don't think there is a problem unitl you start getting into much higher voltages than any audio amplifier uses, But at those voltages, tubes can emit Xrays. May be an issue with CRTs, not sure."

This is utter nonsense!! Ionizing radiation only can occur when sub-atomic particles are excited by a high energy, high frequency power source.
If your statement was true then electrostatic loudspeakers would have been ultra-deadly.
Read here: http://en.wikipedia.org/wiki/Ionizing_radiation

"Hifitime
Those audio frequencies are probably a lot less worrisome than the computer you answered on, especially if it has a CRT.There is more stray radiation on the power lines in the wall above your head,or that lamp cord when you sleep."

True in a sense. CRT units are capable of emitting X-rays due to the frequency they operate at. Power lines frequency corresponds to that of the wall socket you get in your house - either 50 or 60 Hz - not dangerous.
The wee bit of OZONE discharge could be harmful but a gentle breeze around the power lines quickly dissipates it.

Humans get more daily radiation exposure from cosmic rays and RADON than anything else.

Well A1marg... what amplifies operate at 30 kVa? Not even the huge WAVAC amps run near that.

If the above were true then we all would have been dead a long time! Tubes are around quite a while - long enough to have wiped out the entire earths population.

We get more radio radiation from the thousands of satellites orbiting the earth - not to mention cell phones!

Enjoy your tube equipment gentlemen and ladies!

Honest1 & Viridian

The Rotel is just a temporary measure. I used to have a great audiophile amplifier but I had to give it up do to certain reasons.

I also had a set of QUAD mkII amps in the past - they were awesome.

Viridian, the chassis is going to be a bit complex and thus needed to be cut with a CNC plasma cutter. I want an ultra-professional look (a la EAR... Jadis etc).

This is a reply from an electronics engineer:

"Potentially hazardous radiation (e.g. X-rays): There are weak X-rays requiring about 1kV to 20kV to be generated, then medium X-rays needing about 20kV to 60kV, then hard X-rays needing 100kV to 1MV. The first group can theoretically come from tvs and oscilloscopes - they 'penetrate' about 0,1mm through glass to about 0,001 mm through metal - different depths for different metals. The other groups are irrelevant for this discussion.

So no fear - unless you go to sleep with a giant oscilloscope close to your ..... in which case you are so
queer anyway that radiation is the least of your worries.

Folks live close to 30kV - 100kV lines. Radiation cannot be caused unless there is a heated cathode, and an anode, contained in a special vacuum tube. But ozone can be smelled then.

Ozone to higher than one in a million concentration is considered potentially hazardous, but it is smelled long before that (hazardous as in affecting the respiratory system primarily; it can also cause a headache in some people). Such concentrations are very rare; it must be generated to get there. It is a powerful oxidant which in low quantities can be beneficial and is used as a purifier more potent than chlorine. Notably, a small quantity can be generated in air conditioners to purify the air. "

I would rather not begin to argue with him. He is a true scientist that knows his electrons.

My statement about the satellites was based on the fact you stated. It is useless to stress about such things.

Sit back and enjoy the music!!

Case settled then? Good... now I need to get myself a tube amp again... I have a nice 6C33C project that is progressing to slowly for my taste- need to have a stainless steel chassis CNC'ed.

I like tubes!!