John Lindsey Hood amps

[Professor smith]

How does Pass labs Class A designs compare to the late John Lindsey Hoods Class A designs from years ago?

Has Pass done any A B testing?

 

[flg]

I'm sure you've read all of this...

http://www.diyaudio.com/forums/showthread.php?s=&threadid=64081&highlight=:D

 

[Nelson Pass]

How does Pass labs Class A designs compare to the late John Lindsey Hoods Class A designs from years ago?

Has Pass done any A B testing?

I have had a couple different versions of the JLH, and you may recall
that the PLH is a modified version of the core of the JLH circuit.

 

[kimarin]

hmm

Cant say after reading trought that link http://www.diyaudio.com/forums/showthread.php?s=&threadid=64081&highlight= that I found any serius comparing. anyone ?

 

[john65b]

I soon will be building a JLH (Geoff's 2005 version) with two pairs of 2SA1943 2SC5200 Output Devices. I also bought a real deal Aleph 5 a while back (don't tell the wife) and hope to do a comparison.

One of these days I will finish the Brian GT Aleph 5 that's been 90% complete for about a year, I just need to free up some time....currently spending too much time building a 6SN7 Aikido linestage, and enjoying the Aleph....

 

[Zen Mod]

one gentleman with white beard made pretty thorough comparison between JLH amp , and other products form Pass Labs ;

interested parties can find needed info in PLH article , pretty easy downloadable from one of passlabs.com subdomains

 

[EUVL]

I still own different versions of JLH Class A and Aleph-X. And JLH BJT is still a very nice and smooth sounding amplifier.

There is very little to choose from between the two.


Patrick

 

[JLH69]

Best amp I've ever heard, the JLH96.

I have to say, I've never heard a Nelson Pass amp, but I've heard many amps, both valve and SS.

Mind you, I'd never even heard of Nelson Pass until I joined this forum.
Nelson-Jones, yes, Nelson Pass, no.

 

[speedless]

Hi
Where can I find Geoff's 2005 version of the JHL ?
The link is gone.
Jan

 

[Zen Mod]

The Class-A Amplifier Site

 

[speedless]

Hi
Sorry Zen Mod,Cant find it on The Class-A Amplifier Site,only the 69 ver.
I keep going back to my 69-ver 15W (build 1984) with my (ancient) ineffective timewindows (speakers) This combination is VERY good with voice and unplugged (formerly known as acustic),but not enough power for Classic,rock...
I tried many amps with the "timewindows",the best result was with a 250W "mostube" (proberly unknown outside Denmark) But I like the sound of the old JHL,just want the same but with more power.Looking forward to hear the MJ15003

john65b
Thanks for the schematic,it really wet my appetite.
Anywhere i can find more info? Connections,PSU,mayby some do and dont....from the experts.
Im making this at the moment:Class-A power amplifier project | Current-Drive - The Natural Way of Loudspeaker Operation
just waiting for some components.
I would like to compare it with the JLH 2005

Jan