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How do tube Watts compare to SS Watts?

I have Theil 2.2 speakers, which have a low sensitivity (86dB), but I would like to get an intergrated tube amp. Or even all tube. But I don't know how many tube Watts I'll need to drive the Theils. My guesstimate is @ 50wpc for intergrated tube amps, but that could be wildly off. Are their mathematical conversion formulas? Second, if there is a rough range, might you be kind enough to suggest a few worthy candidates that, wheather new or pre-listened, are under $1,000 USD (e.g., Cayin model xxx). Thank you most kindly.
rascal52240

Showing 1 response by gs5556

gs5556
1,209 posts
 
I have used a pair of Wright Sound WPA 3.5 single-ended triodes with Thiel 3.6's. That's a whopping 4 watts into a 6 ohm, 86 db per 2.83V/m speaker. While it doesn't do justice to orchestral, opera or rock, it certainly played loud enough in a 27 X 16 room with classical (chamber, solo, instrumental and voice) and jazz.

Your mileage may vary depending on your room, what your sources do and what you consider adequate playback volume.
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