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#11 | |
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diyAudio Member
Join Date: May 2007
Location: Eskilstuna, Sweden
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Heja Knut,
Quote:
Other FET variations is to be found in the gigantic JLH-thread. JLH is a nice topology anyway!
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Brgds Lars |
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#12 |
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diyAudio Member
Join Date: Mar 2006
Location: Oslo
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Thank you for your interest. Hopefully I will be finishing the assembly in about two weeks. So I am looking forward to the first listening test after that....As always: enough time is a problem.
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#13 | |
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diyAudio Member
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Quote:
Unusually I have too much time on my hands......and not enough brains
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'I have nothing. I owe much. The rest I leave to the poor. - Francois Rabelais satirist & doctor d.1553 |
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#14 | |
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diyAudio Member
Join Date: Mar 2006
Location: Oslo
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Quote:
And I agree with you about the topology. |
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#15 |
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diyAudio Member
Join Date: May 2007
Location: Eskilstuna, Sweden
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I smell something burning
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Brgds Lars |
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#16 |
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diyAudio Member
Join Date: Mar 2006
Location: Oslo
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Data sheet for the JFET: http://www.fairchildsemi.com/ds/MM/MMBFJ177.pdf
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#17 |
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diyAudio Member
Join Date: Sep 2010
Location: Warsaw
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That's very interesting amp indeed. Some DIY-ers are concern about resistors and capacitors. More advance care about transistors. But there is more in what comes out of speakers - sound characeristic i.e. harmonic distortion content. With PLH one can change from Push-Pull signal amplifing method to Single Ended, or choose and many stages between the two. (Like 2/3 AC current ratio suggested by Nelson). From this point of view it's very interesting to see in what extent sound change accordingly. That's why I think every DIY should built PLH but probably only some understand what it's about. I would like to build a one. Knut your cirquit is particulary interesting since there are no capacitors at the output, so one thing less to bother. Looking forward your final results. Thank you for PCB drawings. Pawel
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| Thread | Thread Starter | Forum | Replies | Last Post |
| All FET JLH Class A | EUVL | Solid State | 13 | 4th February 2012 12:54 PM |
| JLH/PLH PC Boards? | Winding Man | Pass Labs | 16 | 28th January 2012 02:11 PM |
| Line preamp for JLH/PLH? | tmblack | Pass Labs | 12 | 1st November 2011 05:54 PM |
| J-JLH or PLH-J ? | drjbf1 | Pass Labs | 11 | 28th July 2011 01:37 PM |
| JLH Class-A Amplifier | Geoff | Solid State | 5 | 25th May 2001 11:55 PM |
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