Tenor 75 Wi OTL


Just bought this OTL by Tenor.

Living in Destin FL and owning the Atmasphere S30 amp I could remove some power tubes to reduce the heat in the summer. Can this be done with the Tenor?

Kelly High End in Ca. who I bought from said the amps puts off very little heat after being on for a hour or two. BS from the seller?
128x128glory
Glad you've made everything work to keep the sound you love!!! I get some heat also but love the OTL sound so I too find ways to survive. As for the bill it's cheaper than gas or dock fees, at least that's what I tell my wife!!! FWIW she loves the OTL sound and would be sad to see them go!!! Enjoy!!!!
Glory, I am glad this seems to be working out for you. On a further note it seems like these amplifiers throw off new levels of heat considering the power rating, 720 watts per amp!!! I'm not sure this is at full power or just when you turn them on, it wasn't clear but the venting through the fireplace chimney seems like a great solution. The outputs on these babies must be biased REALLY high which might be a big contributor to what you are hearing. I can't imagine what your energy cost might be adding a/c costs to compensate for the heat generated. I know the VZN80 was in the 700 watt range but it is stereo. I was listening in February when the weather is cooler and it REALLY warmed up the room in short time. Ventilation seems the only real practical option, enjoy!
The Trancendent is Class AB vs. Class A operation of the Tenor

Just FWIW, the math does not support the idea that the Tenor was class A, not if it is also 75 watts output. IME, the tube is difficult to operate in the A2 region due to the prodigious grid currents involved. The amp is class AB1, similar to the Transcendent in this regard.

The big difference is the fact that one is pentode and the other is triode. In OTLs that makes more difference than the class of operation, since you are not dealing with zero crossing issues or commutation (switching) of output devices (OTLs tend to be immune to these difficulties).
Glory,
You`re quite happy with the wonderful performance of your system, can you leave well enough alone and resist the urge to monkey around with it anymore? LOL.
Ralph out of curiosity, why is this amp putting out so much heat, 720 watts per monoblock? This seems quite high based on the number of output tubes at least compared to the Joule which uses this tube as well.
I suspect that it is biased a littler harder than the Joule if that's the case. We've yet to work on a Joule although we have serviced Tenors in the past.
A bit off topic, but can anyone imagine the heat put off by the Joule VZN-300 Destiny monoblocks w/ sixteen 6C33C-B's a channel?

Either your room would have to be cavernous, nonstop AC running, or you place the monos in your fireplace with a fan in the chimney to draw the heat out.
Yes my wife wants them in the fireplace but it to small for both amps.

A couple of days ago I was running the fan to draw the heat up the fireplace and I began to sweat from the heat of the amps in the room. The fan had fallen off the prop I rigged up for it and it was blowing in the wrong direction. Setting it back up restored order to the listening room so I do believe it works as I thought.

Hurry up Fall.
I had a stereo 6C33C-B SET integrated, Almarro A318B, and that thing was hot. 6-12 tubes must be like a furnace running.

But, I bet the sound is glorious. Oh, the things we endure for this hobby....
A customer of mine has this amp:

http://www.atma-sphere.com/products/ma3.html

He can run them all day in his room and not be any hotter, even though his home is not air conditioned and he lives in Guatemala!

He accomplished this by putting the amps in a specific location in the room, above which are hidden ducts that have a moderately-powered fan at the other end. The heat goes up through the ceiling and out of the house. It is an elegant and simple approach. You can sit in the room all day and be perfectly comfortable.
06-10-11: Atmasphere
He can run them all day in his room and not be any hotter, even though his home is not air conditioned and he lives in Guatemala!
Sorry, I should have been more specific...I was referring to running 6 to 12 6C33C-B's per amp. That tube seems to run much hotter than anything I've ever been near. Maybe that is more of a perception than reality, though.
Atmasphere, so now we know the true cause of the global warming problem...:0)
No you can not use the 5751 tube.

Anyone try different 12ax7a tubes rather than the JJ tubes Tenor specs out?