#1 JLH Class A
Posted: Thu Feb 20, 2014 8:14 pm
My first venture into DIY audio was a Hart kit of a John Linsley Hood 80W mosfet design - and very nice it was too!
JLH lived just outside of Taunton (where I live) and I was fortunate to meet him a couple of times. He was a true British eccentric and quite humble.
So I've always had a soft spot for JLH and his amps and I've long harboured thoughts of building his class A design, originally published in 1969 and updated in 1996 (with further updates here;
http://sound.au.com/tcaas/index-0.htm
Anyway, I was idling away a little time last evening and stumbled across this;
http://www.siliconray.com/free-jlh-2005 ... board.html
I found a thread on the boards over on DIY Audio and, whilst there seem to have been some issues with counterfeit components, there are some positive comments about the amp and the PCBs seem to be very well regarded. So, for the grand sum of around a tenner (mostly shipping) I've ordered a pair of amp PCBs and a pair of the power supply PCBs too. For that cost the risk is low and who knows, the boards might be OK. I'll update in due course.
Any other takers?
Ray
JLH lived just outside of Taunton (where I live) and I was fortunate to meet him a couple of times. He was a true British eccentric and quite humble.
So I've always had a soft spot for JLH and his amps and I've long harboured thoughts of building his class A design, originally published in 1969 and updated in 1996 (with further updates here;
http://sound.au.com/tcaas/index-0.htm
Anyway, I was idling away a little time last evening and stumbled across this;
http://www.siliconray.com/free-jlh-2005 ... board.html
I found a thread on the boards over on DIY Audio and, whilst there seem to have been some issues with counterfeit components, there are some positive comments about the amp and the PCBs seem to be very well regarded. So, for the grand sum of around a tenner (mostly shipping) I've ordered a pair of amp PCBs and a pair of the power supply PCBs too. For that cost the risk is low and who knows, the boards might be OK. I'll update in due course.
Any other takers?
Ray