Quote:
Originally Posted by kev313
Surprising. It's hard to make 2a3 and altecs sound bad. Not for everyone I suppose. It's definitely low on the bling scale.
I'd like to hear his 2a3 amps. They do attract controversy. I always suspected it was due to the price. The speakers...well....well executed 604s are pretty good. Bad ones are pretty bad.
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The website suggests that optional finishes are available for the speakers.
The signal circuit is basically a 7B4 directly coupled to 2A3 with a series feed SE OPT.
Dennis uses a low DCR/low Z power supply and over the top $$$ parts and wiring.
Apparently, these amps have been refined over a few decades since he built the first set.
I tried to do a very low budget industrial grade version of a similar circuit on a breadboard and it has turned out really good so far.
But I also employed a robust DC filament supply for the 2A3, something I prefer over AC heating.
I will caution that these type of amps are for high EF speakers for best results.