This is Thomas Mayer's blog about vacuum tube audio.
Concepts, ideas, unusual circuits and tubes, directly heated triodes, LCR RIAA EQ. Circuits with favorite tubes: EC8020, E55L, D3a, 851, 849, 845, 841, 801A, 866A, 211, 45, 46, 26, 10Y, UX201A, 6A6, 6AH4, 6AM4, 6AX4, 6BY5, 6CB5A, 6CG3, 6HS5, 6HV5A, 6J5, 6N7, 6SC7, 6SF5
DISCLAIMER: Vacuum tube circuits work with dangerously high voltages. Do not attempt to build circuits presented on this site if you do not have the required experience and skills to work with such voltages. I assume no responsibility whatsoever for any damage caused by the usage of my circuits.
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Friday, November 13, 2015
Live from Denmark : ETF 2015 - Part 6
The gang from Norway set up a totally cool system:
A large horn speaker.
And a couple crazy amplifiers.
For example the one above, built by Thomas Dunker who gave his name to the term 'Dunker Factor' which specifies the ratio of kilogram of the amplifiers weight to the power output. Of course the higher the Dunker factor the better ;-)