diyAB Amp The "Honey Badger" build thread - Page 2 - 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 2nd June 2012, 10:15 PM   #11
6L6 is online now 6L6  United States
diyAudio Member
 
6L6's Avatar
 
Join Date: Oct 2010
Location: Denver, Colorado
A quick PSU question -

I have a pair of single 120v primary/49v-0-49v secondary transformers of indeterminate VA, but the best guess is around 300. They should be great for a HoneyBadger.

I am planning on using one per channel.

The build guide mentions about 40,000uf per rail of filter capacitance. Does this change with a dual-mono setup like I am planning? Of course, I could just go nuts and have an excess of caps, but that doesn't actually appeal to me. (And anyway, 80v caps are expensive...)

Any ideas or suggestions?

Last edited by 6L6; 2nd June 2012 at 10:24 PM.
  Reply With Quote
Old 2nd June 2012, 10:41 PM   #12
diyAudio Member
 
danielwritesbac's Avatar
 
Join Date: Nov 2007
Hi 6L6. Perhaps you could replace the cap bank with a K-multi upgrade?
__________________
Tools, Models & Software for DIYClipNipper boostLM1875 TurboPowerful TDA7293 kitTDA7294 pt2pt ♦ My post has opinion.
  Reply With Quote
Old 2nd June 2012, 10:49 PM   #13
6L6 is online now 6L6  United States
diyAudio Member
 
6L6's Avatar
 
Join Date: Oct 2010
Location: Denver, Colorado
Ok, that sounds really interesting!

But I have no idea what it is.
  Reply With Quote
Old 2nd June 2012, 11:05 PM   #14
SoIL4x4 is offline SoIL4x4  United States
diyAudio Member
 
Join Date: Nov 2011
Location: Carterville, IL
Quote:
Originally Posted by 6L6 View Post
Ok, that sounds really interesting!

But I have no idea what it is.
X2
  Reply With Quote
Old 2nd June 2012, 11:11 PM   #15
diyAudio Member
 
albertNL's Avatar
 
Join Date: Sep 2011
Location: Netherlands & Australia
I have a pair of DIY Aleph 2 monoblocks, each consisting of:
  • Modushop 4U 400mm enclosure
  • 1000VA 2 x 40V transformer
  • CLC power supply (47000uF/63V, 2.2mH, 47000uF/63V for each rail)
  • Aleph 2 circuit boards (KK PCB)
Seems ideal for a DiyAB amp and it is such a waste to have to buy new enclosures, transformers and caps just to test them.
But I do not want to get rid of the Aleph 2's either.

Then I had an idea.
What if I add a DiyAB amp board to each enclosure (so each monoblock would contain both the Aleph 2 and the DiyAB circuits for one channel). Could I simply add a switch to connect each rail to either circuit? Or should the inputs and outputs also be switched?
  Reply With Quote
Old 3rd June 2012, 09:17 AM   #16
diyAudio Member
 
danielwritesbac's Avatar
 
Join Date: Nov 2007
Quote:
Originally Posted by 6L6 View Post
Ok, that sounds really interesting!
But I have no idea what it is.
Quote:
Originally Posted by SoIL4x4 View Post
X2
Keantoken's low voltage drop capacitive multiplier is "K-multi"

A capacitive multiplier replaces a cap bank. A low voltage drop capacitive multiplier runs cooler due to less waste but that is also more economical to heatsink. Both benefits at once is a K-multi.
__________________
Tools, Models & Software for DIYClipNipper boostLM1875 TurboPowerful TDA7293 kitTDA7294 pt2pt ♦ My post has opinion.
  Reply With Quote
Old 4th June 2012, 04:22 AM   #17
diyAudio Moderator
 
JojoD818's Avatar
 
Join Date: Mar 2003
Location: searching...
Quote:
Originally Posted by 6L6 View Post
A quick PSU question -

I have a pair of single 120v primary/49v-0-49v secondary transformers of indeterminate VA, but the best guess is around 300. They should be great for a HoneyBadger.

I am planning on using one per channel.

The build guide mentions about 40,000uf per rail of filter capacitance. Does this change with a dual-mono setup like I am planning? Of course, I could just go nuts and have an excess of caps, but that doesn't actually appeal to me. (And anyway, 80v caps are expensive...)

Any ideas or suggestions?

Hi 6L6!

I have tried 'em amps with as low as 10,000uf per rail for two channels! No perceivable difference as long as I keep my loads at 8 ohms. With 4 ohms it just needs more capacitance in there.

I'm thinking of building just a single channel and install it to a piece of alum sheet to make a sub plate amp.

Good luck on your build!
  Reply With Quote
Old 22nd June 2012, 03:49 PM   #18
diyAudio Member
 
Join Date: Nov 2010
Location: buenos aires
Quote:
Originally Posted by danielwritesbac View Post
Good job getting the boards in the store.
@Variac, feel free to edit, revise or recycle this post.

A version of the schematic with white background for easy printing:
Click the image to open in full size.
A direct link to the original documents.
Parts list attached below:

I have doubts about the settings of the presets "ccs" "bias" and "offset", nor understand the meaning of 'r18' and 'd3 (zener diode) "
  Reply With Quote
Old 23rd June 2012, 12:10 AM   #19
diyAudio Member
 
Join Date: Nov 2010
Location: buenos aires
My query was about settings
  Reply With Quote
Old 23rd June 2012, 05:13 AM   #20
diyAudio Member
 
Join Date: Sep 2008
Location: Brisbane
Quote:
Originally Posted by luisitoloco22 View Post
My query was about settings
Please read post #2 and click on the "Direct link to original documents" and then read them carefully. Or you can go to the store and download the construction pdf and read everything carfully. All the info you need is already there.

Regards

Simon
  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
diyAB Amp - The "Honey Badger" Variac Solid State 1276 3rd July 2014 11:14 AM
My LM3886 build thread CanAm Man Chip Amps 22 13th July 2012 07:48 AM
Ricci's dual B&C 21SW152 build thread. Josh Ricci Subwoofers 22 12th April 2010 09:39 PM
New Project Build Thread ryoung Multi-Way 5 19th April 2008 01:15 AM
Badger Badger Badger..... Mushroom !! 5th element Everything Else 15 20th September 2003 03:16 PM


New To Site? Need Help?

All times are GMT. The time now is 09:33 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