Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Solid State Talk all about solid state amplification.

HAL OPB amplifier
HAL OPB amplifier
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 6th September 2012, 03:49 AM   #11
OnAudio is offline OnAudio
diyAudio Member
 
OnAudio's Avatar
 
Join Date: Oct 2011
draft
Click the image to open in full size.
  Reply With Quote
Old 6th September 2012, 06:01 PM   #12
OnAudio is offline OnAudio
diyAudio Member
 
OnAudio's Avatar
 
Join Date: Oct 2011
Either one of Q4 and Q6 can be mounted on heatsink together with Q1 and Q8. Also included will be some minor mods to accomodate different tastes. Some like well done eggs while others prefer...

A large selection of opamps can be used.
  Reply With Quote
Old 6th September 2012, 11:28 PM   #13
OnAudio is offline OnAudio
diyAudio Member
 
OnAudio's Avatar
 
Join Date: Oct 2011
Looking for constructors seeking fun and adventure.
  Reply With Quote
Old 7th September 2012, 05:57 PM   #14
OnAudio is offline OnAudio
diyAudio Member
 
OnAudio's Avatar
 
Join Date: Oct 2011
This amplifier will require, two supply voltages.
1. A regulated +/-15VDC
2. An unregulated +/- 40VDC, it is preferred that the regulated supply come off its own transformer
  Reply With Quote
Old 7th September 2012, 06:10 PM   #15
OnAudio is offline OnAudio
diyAudio Member
 
OnAudio's Avatar
 
Join Date: Oct 2011
The amp will sound as good as the selected opamp . I have not found a device yet that can do a better job than the TO3 MJ11032/33 in that position. C3 and C8 maybe increased to 22p.
R31,R32, D11 and D12 are optional.

Last edited by OnAudio; 7th September 2012 at 06:21 PM.
  Reply With Quote
Old 7th September 2012, 06:37 PM   #16
donpetru is offline donpetru  Romania
diyAudio Member
 
donpetru's Avatar
 
Join Date: Jun 2007
Location: Romania
Good job but the fuse is somehow too big?! I'd say yes.
The rest is well known amplifier topology with multiple disadvantages, but can turn into a kind QSC amplifier with some small adjustments.
  Reply With Quote
Old 7th September 2012, 07:07 PM   #17
OnAudio is offline OnAudio
diyAudio Member
 
OnAudio's Avatar
 
Join Date: Oct 2011
Thanks for your complements Don. What adjustments do you have in mind.
This amplifier may be more advanced....
  Reply With Quote
Old 7th September 2012, 08:38 PM   #18
evette is offline evette  Canada
diyAudio Member
 
Join Date: Jun 2006
Send a message via Yahoo to evette
I,m In onsemi does make better sounding darlingtons than the ones listed. Evette
  Reply With Quote
Old 7th September 2012, 08:46 PM   #19
OnAudio is offline OnAudio
diyAudio Member
 
OnAudio's Avatar
 
Join Date: Oct 2011
Thanks Evette, What darlingtons do you have in mind
  Reply With Quote
Old 7th September 2012, 10:41 PM   #20
evette is offline evette  Canada
diyAudio Member
 
Join Date: Jun 2006
Send a message via Yahoo to evette
2n6287/2n6284 IMHO are great sounding devices, and are pretty easy to drive. Evette
  Reply With Quote

Reply


HAL OPB amplifierHide 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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Questions about how to decrease the PASS A-40 amplifier into a class AB amplifier. novtango Pass Labs 4 14th February 2018 05:11 PM
HAL PREAMPLIFIERS OnAudio Solid State 86 19th March 2012 06:47 AM
HAL SYMFET OnAudio Solid State 23 21st January 2012 06:54 AM
A certain HAL Amplifier OnAudio Solid State 0 23rd November 2011 03:41 PM
HAL-O Damping Instruments Tazzy Tubes / Valves 7 14th October 2004 02:24 AM


New To Site? Need Help?

All times are GMT. The time now is 07:39 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio
Wiki