Help! Hafler DH102 - 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 12th December 2008, 08:54 PM   #1
diyAudio Member
 
Join Date: Dec 2008
Default Help! Hafler DH102

I've had the good fortune to come across a PCB for the ever elusive DH102 head amp that mounts inside the DH101.

Problem is that the circuit diagram and the parts layouts on these boards just don't exist anywhere.

My PCB is empty, and I'd love to build it up and run it.

Any DH102 owners out there that could provide a parts list and layout?

Thanks in advance!
  Reply With Quote
Old 21st January 2009, 09:13 PM   #2
mmerig is offline mmerig  United States
diyAudio Member
 
Join Date: Jan 2005
Location: south east Idaho, Teton Basin
I have the DH102, and did some modifications (mainly caps at the input). I noted the original components and could provide you with the layout and parts list. What format will work for you (jpg, etc.)?
  Reply With Quote
Old 22nd January 2009, 05:42 PM   #3
diyAudio Member
 
Join Date: Dec 2008
I'd love that info. Every little bit helps!

Thanks in advance.
  Reply With Quote
Old 24th January 2009, 02:19 PM   #4
mmerig is offline mmerig  United States
diyAudio Member
 
Join Date: Jan 2005
Location: south east Idaho, Teton Basin
I could post what I have on the forum, as this would benefit more people; my only concern is Hafler's intellectual propoerty rights. The last time I checked, including an email to them, Hafler had nothing on the DH102. The DH102 is old, and Hafler has lots of schematics etc. on their website for other DH vintage products, but I leave it to a moderator to advise me before I post what I have on the forum which is:

1) Hafler's operating and installation instructions for the DH102 for installation in the DH101

2) A schematic and stuffing guide I derived from the board (not included in above)

3) A scan of the non-component side of the board

The schematic follows the board layout, and it could probably be simplified.

There is a muting circuit on the DH102, but I did not complete this on the schematic (I put my DH102 in the DH110, which has its own muting). I could complete the muting circuit, but it will be a week or so before I get to it.
  Reply With Quote
Old 28th January 2009, 03:23 PM   #5
diyAudio Member
 
Join Date: Dec 2008
Considering its age and the fact that the parent company:

a) does not support it any more
b) has no data on it
c) doesn't seem to care that dozens of people are selling copies of documents they freely give away on their site

It should be considered public domain, IMHO.
  Reply With Quote
Old 28th January 2009, 04:00 PM   #6
Zen Mod is offline Zen Mod  Serbia
diyAudio Member
 
Zen Mod's Avatar
 
Join Date: Jan 2003
Location: ancient Batsch , behind Iron Curtain
sch
Attached Images
File Type: jpg schmtcsw.jpg (59.5 KB, 393 views)
__________________
my Papa is smarter than your Nelson !
clean thread; Cook Book;PSM LS Cook Book;Baby DiyA ;Mighty ZM's Bloggg;Papatreasure;Papa... by Mighty ZM
  Reply With Quote
Old 28th January 2009, 04:01 PM   #7
Zen Mod is offline Zen Mod  Serbia
diyAudio Member
 
Zen Mod's Avatar
 
Join Date: Jan 2003
Location: ancient Batsch , behind Iron Curtain
copper
150x70mm
Attached Images
File Type: jpg copper15x7cm.jpg (36.1 KB, 338 views)
__________________
my Papa is smarter than your Nelson !
clean thread; Cook Book;PSM LS Cook Book;Baby DiyA ;Mighty ZM's Bloggg;Papatreasure;Papa... by Mighty ZM
  Reply With Quote
Old 28th January 2009, 04:03 PM   #8
Zen Mod is offline Zen Mod  Serbia
diyAudio Member
 
Zen Mod's Avatar
 
Join Date: Jan 2003
Location: ancient Batsch , behind Iron Curtain
placement

these files are old .......... scanned yrs ago .

I still have that DH112 , but it's not handy right now .
Attached Images
File Type: gif placement.gif (80.8 KB, 345 views)
__________________
my Papa is smarter than your Nelson !
clean thread; Cook Book;PSM LS Cook Book;Baby DiyA ;Mighty ZM's Bloggg;Papatreasure;Papa... by Mighty ZM
  Reply With Quote
Old 28th January 2009, 04:48 PM   #9
diyAudio Member
 
Join Date: Dec 2008
You are the MAN, Zen, thanks.

  Reply With Quote
Old 28th January 2009, 04:48 PM   #10
diyAudio Member
 
Join Date: Dec 2008
It appears at first glance that the DH102 DH111 and DH112 are pretty much the same thing.
  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
Hafler... tomtt Everything Else 0 11th May 2006 03:34 AM
Hafler PC-10 help..... burntfingers Solid State 5 22nd March 2006 01:33 AM
Hafler DH-225 and P-230 Bogie Solid State 0 11th February 2005 01:03 AM
hafler amp or pre-amp larryg Swap Meet 0 10th March 2004 02:39 PM
Hafler DH-120 and 220 ? Tino Solid State 0 12th January 2004 12:14 AM


New To Site? Need Help?

All times are GMT. The time now is 10:50 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