valve amplifiers and high efficiency speakers


June 23rd, 2017 20:45
Addictive sound from old indirectly heated triodes from Telefunken. AD101, a power triode, on the preamplifier..
AD101 Telefunken preamplifier
Supported by a mesh-plate AZ1 and Micro cathode bypass capacitors.. The preamp is finished!  Read more...
June 17th, 2017 10:46
Stack of amplifiers.. all built the same size.
Audio tower
June 3rd, 2017 10:51
A posthumous tribute to Hans Kortenbach of Musical Affairs. His last unfinished speaker project comprising a bigger cabinet supporting an unusual choise of modified EMS units: The B15EX for low-end response an  Read more...
May 29th, 2017 19:51
Finally ready.
Tweaked for best sound. Transformer attenuators by Silvercore added. Philips AL4 triode connected, Jupiter copper capacitor coupled to Telefunken RS282. What a tone comes from these!
May 1st, 2017 17:59
Had to convert the R101 preamp due to some residual hum which I could not get rid of without changing the transformer topology.. No worries though, plenty of possibilities here. So rebuilt it using some nice t