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In Reply to: RE: Venturing into SET active system. Does a 45 have enough power? posted by LewinskiH01 on August 22, 2016 at 11:41:53
The Yamamoto A-08S is UNDYNAMIC, as are 99% of the commercial Type 45 amps out there !!!
You can DIY build a dynamic Type 45 amp, that will creme any 2A3 amp in dynamics, but ONLY if you have a GOOD LSES power supply, and proper attention is paid to wiring, in the amp and to the drivers.
There is, IMHO, only one really good, commercial SET amp out there, and Dennis Fraker of Serious Stereo is the man who builds it. It is cheaper than spending ones money, and life-time, on second rate solutions that really don't cut it.
Now, given a SET with a good supply and really good wiring, a 2A3 will outperform a Type 45, and perhaps the main reason will be a 2.5K secondary , with lower DCR, than a 5K secondary. BUT, no one I know, except Dennis, can build, or listens to such amps. I am waiting on the world to do so !!
Follow Ups:
There no reason to think that "serious stereo" is better then any other builder. They use no special transformers, actually it looks as if they use standard EI types with high coreloss and more distortion the modern c-cores
Edits: 09/02/16
Hello Lenin,
This is the second time you have posted about E-I cores, and you are RIGHT about it.
It should be a modern C Core and or a Toroidal core ( Menno Van Der Veen ).
You are not in the USA. At RMAF many many years ago, in Terry Cain's listening room, there was a huge after-hours SET amp showdown, and the Serious Stereo amps wiped-out all the rest, they gave Dennis a standing ovation. Nothing has changed, to my understanding, since then.
Likely, the core-type you mention, and also the toroidal core, will be evaluated in the future. These should be even better than E-I.
There is MUCH more to a successful SET implementation than just the core-type, as we hopefully know. "Everything" in the SET implementation matters !!
Your comments are noted and appreciated, I generally agree with them. Thank you very much.
Jeff Medwin
You sound a bit sarcastic....
Luckely i live in Europe and we know " there are many ways to Rome"
Hi Lenin,No, I did not intend to imply sarcasm - at all !! You are 100% correct about E-I core types.
Honest. I was sincere. we will evaluate different cores in the future !!
Was discussing this topic with a good friend, just TWO DAYS ago, privately.
Jeff
Edits: 09/02/16
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