diyAB Amp The "Honey Badger" build thread

Variac · 08:11 PM

This thread is for people to discuss their builds, build issues, and parts for the diyAB "Honey Badger" power amp. the boards will be in the diyAudio store in a few days...

Main Thread:
diyAB Amp - The "Honey Badger"

Schematics, etc.:
http://www.diyaudio.com/forums/solid...ml#post2650279

To get boards go here to the diyAudio Store. There is also more info about the boards:
P-DIYAB-2V20 - diyAB "Honey Badger" Class AB Power Amp-Pair - Boards

danielwritesbac · 01:01 AM

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:

A direct link to the original documents.
Parts list attached below:

danielwritesbac · 5th May 2012, 07:35 AM

Although the schematic is large, the board really helps to simplify building.
This might take an hour or so of soldering, but it should be easy.
(click on image for larger view)

P.S.
I don't have complete information on the post build checks and adjustment of the trimmers. Can someone please contribute that documentation?

haiduc32 · 15th May 2012, 07:02 AM

a beginner question: how big of a transformer do I need for this amplifier, and can you recommend any?

niss_man · 16th May 2012, 10:25 AM

Quote:

Originally Posted by danielwritesbac

P.S.
I don't have complete information on the post build checks and adjustment of the trimmers. Can someone please contribute that documentation?

You have already provided a link to the adjustments and checks originally posted by ostripper. Click on 'direct link to original documents'. In that zip file there is a file called
'DIYA-AMP -construction-advanced-options.txt'. It has all the details used for constructing and testing the amplifier.

Regards

niss_man

niss_man · 16th May 2012, 10:35 AM

Quote:

Originally Posted by haiduc32

a beginner question: how big of a transformer do I need for this amplifier, and can you recommend any?

I used a 600va 2x40v one for mine. The amp is capable of 180w into an 8 ohm load so there is some headroom. or you could use a couple of 300va ones. Oh yes and I also installed a soft start.

Regards

niss_man

ersa191 · 18th May 2012, 03:47 PM

Can there be used Polystyrene Capacitors instead of mica

BP Crew · 19th May 2012, 09:20 PM

ersa191 · 20th May 2012, 05:30 AM

To be more precisely instead of C7/C8 witch are in BOM silver mica, can i replace them with polystyrene capacitors?

niss_man · 22nd May 2012, 04:13 AM

C7 can have up to 120v across it. As long as your caps are rated to maybe 200v you should be right. I am not sure why c8 should be silver mica may be someone else knows. It only shows a couple of volts at clipping under ltspice simulation. Another reason may be also that micas have a lower tolerance.

Regards

Simon

1st May 2012, 06:04 PM	#1
Variac diyAudio Editor Join Date: Dec 2001 Location: San Francisco, USA	diyAB Amp The "Honey Badger" build thread This thread is for people to discuss their builds, build issues, and parts for the diyAB "Honey Badger" power amp. the boards will be in the diyAudio store in a few days... Main Thread: diyAB Amp - The "Honey Badger" Schematics, etc.: http://www.diyaudio.com/forums/solid...ml#post2650279 To get boards go here to the diyAudio Store. There is also more info about the boards: P-DIYAB-2V20 - diyAB "Honey Badger" Class AB Power Amp-Pair - Boards __________________ 2013 Burning Amp Festival announced: Sunday, October 6th in S.F. We need Volunteers & sign-up's for what you're bringing! Last edited by Variac; 4th May 2012 at 08:11 PM.

5th May 2012, 07:35 AM	#3
danielwritesbac diyAudio Member Join Date: Nov 2007	Although the schematic is large, the board really helps to simplify building. This might take an hour or so of soldering, but it should be easy. (click on image for larger view) P.S. I don't have complete information on the post build checks and adjustment of the trimmers. Can someone please contribute that documentation? __________________ ♦ Tools & Guides ♦ ClipNipper headroom boost ♦ Parallel LM1875 pt2pt ♦ Easy parallel TDA7293 board ♦ TDA7294 pt2pt ♦ My post has opinion.

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15th May 2012, 07:02 AM	#4
haiduc32 diyAudio Member Join Date: May 2012	a beginner question: how big of a transformer do I need for this amplifier, and can you recommend any?

18th May 2012, 03:47 PM	#7
ersa191 diyAudio Member Join Date: Sep 2011	Can there be used Polystyrene Capacitors instead of mica

19th May 2012, 09:20 PM	#8
BP Crew diyAudio Member Join Date: May 2012 Location: Indonesia

20th May 2012, 05:30 AM	#9
ersa191 diyAudio Member Join Date: Sep 2011	To be more precisely instead of C7/C8 witch are in BOM silver mica, can i replace them with polystyrene capacitors?

22nd May 2012, 04:13 AM	#10
niss_man diyAudio Member Join Date: Sep 2008 Location: Brisbane	C7 can have up to 120v across it. As long as your caps are rated to maybe 200v you should be right. I am not sure why c8 should be silver mica may be someone else knows. It only shows a couple of volts at clipping under ltspice simulation. Another reason may be also that micas have a lower tolerance. Regards Simon