What about Yamaha 2SJ26 / 2SK76? They come in TO3 and the data is well known. I tried them and they sound promissing, but I don't know the best operation values.
Does for this Part3 batch Diyers need CCS mosfets.. if yes.. what the reference is IRF250 etc. ??
Best regards
Best regards
Many thanks, I know this thread quite well, but I am not smart enough to find the sweet spot. May be I have to learn how to handle some mearurement
équipement. My drawers show some pairs of this Yamaha goodies, I am curious, but I fear a little bit, the sound will be identic to those Sony parts, so nothing new
équipement. My drawers show some pairs of this Yamaha goodies, I am curious, but I fear a little bit, the sound will be identic to those Sony parts, so nothing new
at first glance, Ugs range is lower comparing to Sonys, so that would need (trivial) rearrangement of biasing voltage divider
regarding sweet spot, I know Pa would answer ditto, but I didn't spent any time looking at graphs of Sony, neither got them on bench for measurement
even if I have some (both weaker and stronger ones) in boxes
regarding sweet spot, I know Pa would answer ditto, but I didn't spent any time looking at graphs of Sony, neither got them on bench for measurement
even if I have some (both weaker and stronger ones) in boxes
I expect anything with a reasonable dissipation figure to work with minor adjustment.
It is, after all, just a follower.
It is, after all, just a follower.
I mean for Diyers with 2SJ28 and 2SK82 who want build Part 1 and 2 versionsDoes for this Part3 batch Diyers need CCS mosfets.. if yes.. what the reference is IRF250 etc. ??
could be possible buy in the store the kit with pcb's ,aluminium brackets, FE transformers
and mosfets TO-3 IRF250 ?
I have not made a front end or PS filters for this, considering that there are
some available on the site, but if needed I can do so.
some available on the site, but if needed I can do so.
Will the front end and filters from diy vfet part 2 work with these boards? Any plans to make the part two front ends and filters available in the store?
Great. I gots the 60/18 VFETs and the front end driver boards. Will get them into 4650 chassis for nostalgia if I can manage it. So, next, do the front end boards and set up test rig for my VFETs (they all pass the diode test).
Yes, it's a similar situation, but the current sources are not constant - different vfets like different loads, and the 2sj18 and 2sk60 are more optimal into 16 vs the 8 Ohms of the 2sk28 and 2sk82.