Just wondering if anyone has tried this in the last 7 years or so?
The amp uses VP080, VN1210, 2SK133 and 2SJ48 mosfets. These are difficult, but seemingly not impossible to get hold of.
1) Finding them on the actual manufacturer's website is nigh impossible - hence limited information.
2) There seem to be no spice models for them.
3) Perhaps there are newer, better alternatives to these mosfets now available - and also with the spice models or data suitable for LTSpice?
It would be nice if the manufacturers stated they were suitable for audio use too.
Comments/suggestions gratefully accepted!
is it the amplifier you don't likeLinsley Hood stuff is very basic - noisy - with crummy damping factors, insignificant slew rates - offering pretty below average performance
is it the regulator that you don't like?hey try and use common, cheap plastic package regulators
I think you underestimate the peak current requirements of fast transients.But under drive conditions down to 2 Ohm inductive loads, with the rest of the amplifier on the end that, peak issues havnt proved to be the case. I may improve that further when I do the bigger 300W version. There is enough stable current in there to sink a battleship.
I think you underestimate the peak current requirements of fast transients.
Dont get me wrong - great for enty level, have a go type of thing but
If you are seeking quality - I'd scour the world for better.
Check out Exicon/Profusion
JLH's amps all had one thing in common... they really made music.
If I've walked into a JLH appreciation society - I apologise if my personal tastes dont fit - I just thought some alternatives exist that could be improvements
Linsley Hood stuff is very basic - noisy - with crummy damping factors, insignificant slew rates - offering pretty below average performance ,(even for back then) - we tended to use them as training tools -- mainly because they are cheap and the parts list is short.
Then you'll LOVE this, JLH=TTL. Everything you asked for above in spades!
My beef with JLH is overbias in the center, not enough bias at extremes...
Entirely because base current is the only thing gets regulated or steered.
Turn a blind eye to quiescent emitter currents, and hope for the best.
On the other hand, that same blind eye makes paralleling them easy.
I can't think of any other advantage...
JLH is fixable, but thats not what I'm showing you here.