In article ,
Chris Morriss wrote:

I would say that you are more likely to damage the amp by using a 16R
speaker on the 4R tap, as this is going to cause larger than expected
voltage swings at the anodes.
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However, the voltage swing can't be more than the B+ rail; the total
dissipation might increase.

Mike Squires
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Mike Squires (mikes at cs.indiana.edu) 317 233 9456 (w) 812 333 6564 (h)
mikes at siralan.org 546 N Park Ridge Rd., Bloomington, IN 47408