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RE: Lux91 monoblock running very hot

Posted by Henryhleung on July 19, 2013 at 07:03:42:
Incidentally, while on the topic of 300B plate voltage..

Thorsten, is it possible to lower the operating point of the Lux91 tubes? Ie reduce the voltage from 400v to 350v? I'm curious whether this would not stress out the tubes as much and increase the life of the 300Bs. Would this be possible with the Lux circuit and would it require much modification. Sorry if this is a newbie question or if I'm not making sense.

The reason for asking is because people are often surprised or disbelieving when I tell them my mono blocks are rated 16w. Some reckon its impossible for a single 300b implementation, others say my tubes will burn out very soon. I've read your previous posts about 300b suggested operating points being conservative. But any idea how much more quickly the tubes will be eaten up in the Lux91 implementation?

Thanks
Henry