JLH Class A headphone amplifier - diyAudio
Go Back   Home > Forums > Amplifiers > Solid State

Solid State Talk all about solid state amplification.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 24th August 2010, 08:18 PM   #1
diyAudio Member
 
Join Date: Feb 2006
Location: Essex
Default JLH Class A headphone amplifier

Hello

Please find some pics of my recently completed JLH class A headphone amplifier. The unit uses volume remote control, and all mains power wiring are hidden under the suspended chassis .. I done this to try and make the wiring more neater. I will be upgrading to burr dog agapters with better omp amps soon. The panel has been laser engraved on the back, the feet I made myself etc, the sound is 1st class.

Click the image to open in full size.

Click the image to open in full size.

Click the image to open in full size.

Click the image to open in full size.

Click the image to open in full size.

Click the image to open in full size.

Click the image to open in full size.

all the best

JamesFeline
  Reply With Quote
Old 24th August 2010, 08:39 PM   #2
diyAudio Member
 
Join Date: Jun 2009
Send a message via Yahoo to kannan_s
You make Linseley Hood proud - outstanding workmanship -better than many comercial product -
congratulations
you can make this service available to other DIyers !
kannan
  Reply With Quote
Old 24th August 2010, 08:52 PM   #3
diyAudio Member
 
Join Date: Feb 2006
Location: Essex
Hello

I was thinking of putting this unit on ebay if any one was interested? the volatge is 230v but I can convert to 110 or 120. The unit comes with a mini remote as well. I have been making DIY amplifiers for the last 25 years .. so practice makes purfect I suppose. The sound of this unit is amazing, watch this space for more builds from my log cabin ...
  Reply With Quote
Old 25th August 2010, 12:10 AM   #4
burbeck is offline burbeck  United Kingdom
diyAudio Member
 
Join Date: Aug 2004
Location: Ratae Coritanorum
great looking construction James, which version of J L Hood amp is it?

regards
bob
  Reply With Quote
Old 25th August 2010, 12:34 AM   #5
diyAudio Member
 
colin.hepburn2's Avatar
 
Join Date: Jan 2003
Location: Newtonhill Aberdeenshire
Hi All
Well JLH Headphone Fans
Here is a Headphone version of the JLH single ended Class A speaker Amp that you all maybe interested in I am collecting the parts so havenít build it as yet
Attached Images
File Type: jpg JLH-HPhoneAmp Schematic 1.jpg (35.2 KB, 2129 views)
__________________
Colin
The Blues Man
  Reply With Quote
Old 25th August 2010, 10:57 AM   #6
diyAudio Member
 
Join Date: Feb 2006
Location: Essex
The version is the class a Chairria version single ended, the op amps will be the 627 version (metal can type) these are very expensive at £27 each. The remote pcb was purchased from Altronics. At the time I did not have a blue velvet alps pot so used the one that came with the kit .. sounds good to my ears and all who listened to the unit.

regards

Nick
  Reply With Quote
Old 28th August 2010, 07:43 PM   #7
diyAudio Member
 
Join Date: Jan 2005
Location: Sao Paulo
How much one of this would cost?
Do you have the specs?
Thanks!
  Reply With Quote
Old 29th August 2010, 04:41 PM   #8
diyAudio Member
 
Join Date: Feb 2006
Location: Essex
Hello

I will be putting this unit on ebay to make way for my next project, this unit is made to the highest standards. The start bid will be £100, trust me what ever the unit does sell for will still be well below the cost that it would be if you made the unit yourself. If anyone is interested in a special comission of the headphone amp (i.e I make the kit for you) please email me or send me a private PM

regards

Nick
  Reply With Quote
Old 4th September 2010, 03:32 PM   #9
diyAudio Member
 
Join Date: Apr 2009
i do not see any op amp in jlh schematic? where would you use 627? thanks peter
  Reply With Quote
Old 5th September 2010, 01:38 PM   #10
diyAudio Member
 
Join Date: Oct 2009
Location: Hamburg
A little off topic but ....

I saw this a "JHL Class A headphone amplifier earphone AMP / preamp" in the ebay store of along1986090 from china. It looks like a normal JLH 10W amplifier with the bias current terned down for head phone use at least from the large picture. I will let you know when it arrives. For 20 UKP including shipping (approximately 25 euro) I thought it was worth a try anyway.
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
JLH 10 Watt class A amplifier tschrama Solid State 3019 19th June 2014 11:57 PM
JLH headphone amplifier steveh49 Headphone Systems 8 14th May 2014 03:31 PM
JLH 10 Watt class A amplifier #2 DomKo Solid State 8 30th October 2003 11:32 AM
JLH Class-A Amplifier Geoff Solid State 5 25th May 2001 11:55 PM


New To Site? Need Help?

All times are GMT. The time now is 04:25 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright ©1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2