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Questions about tubes and gear that glows. FAQ

Re: Who sells them?

"I have heard these run a little on the hot side."

The amount of heat the tube generates is simply a function of the amount of power it has to dissipate. The heater voltage & current are the same as any other KT-88, so that's not an issue. Plate (and/or screen) dissipation is a function of voltage applied and current drawn, so that won't be any different than another KT-88 in the same application either.

So what you heard is wrong, and it is based on not understanding what is going on. Now if that person who said that took out a set of KT-88s with a low bias current then put in Genalex with a high bias current - and then didn't (or couldn't) adjust the bias - then they would run warmer. But that's not a tube issue, that's a bias issue.

They should work fine in a given piece of gear.

" Would these work well in a Rogue 90 with the amp cover on?"

I can't think of any reason why not!



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  • Re: Who sells them? - Jim McShane 18:21:55 04/05/07 (0)


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