diyAB Amp - The "Honey Badger" - Page 68 - 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 4th May 2012, 07:15 PM   #671
diyAudio Member
 
Join Date: Nov 2010
Location: Marblehead Ma
Quote:
Originally Posted by Variac View Post
The boards are now available from the EU store! For the time being they must be ordered from the EU store only. The shipping is quite reasonable.

however we also seem to have to pay your vat surcharge along with extra shipping which adds an extra $10 over what we'd be paying here .

are the usa boards lost for good ?

Woody
  Reply With Quote
Old 4th May 2012, 07:25 PM   #672
Variac is offline Variac  United States
diyAudio Editor
 
Variac's Avatar
 
Join Date: Dec 2001
Location: San Francisco, USA
The missing USA boards (18 pr.) were sent to the EU store. You can save money by waiting, but we only ordered 50 pairs to start with worldwide to reduce risk because this is the first order. We won't have any in the US store until the next order, which should arrive in 2 months if the boards are selling well. The VAT surcharge is already reflected in the price.

Very sorry about this, but somehow, this whole project has been difficult. Won't even talk about having to mod the mounting hole locations without ostrippers original files!

Mark

Last edited by Variac; 4th May 2012 at 08:13 PM.
  Reply With Quote
Old 4th May 2012, 08:08 PM   #673
diyAudio Member
 
Join Date: Nov 2010
Location: Marblehead Ma
no problem Mark . i didn't know that you'd found them . thought they might still be expected . no biggie . i ordered a set from the euro store and i'll grab a few extra when they're stocked here .

appreciate all your efforts

cheers Woody
  Reply With Quote
Old 4th May 2012, 09:05 PM   #674
diyAudio Member
 
Join Date: Oct 2011
I offer 25 SYMEF boards as donation to diyaudio for your US store. 1 day shipping to store

Last edited by OnAudio; 4th May 2012 at 09:08 PM.
  Reply With Quote
Old 4th May 2012, 09:26 PM   #675
diyAudio Member
 
Join Date: Oct 2011
If you accept this offer, some things may happen

1. I cease availability from my site to the USA so long as you have boards in store

2. Mark up price for USA

etc

PM me
  Reply With Quote
Old 4th May 2012, 10:17 PM   #676
diyAudio Member
 
Join Date: Oct 2011
Packed and ready for shipping address
Attached Images
File Type: jpg SYMEF.jpg (168.7 KB, 694 views)
  Reply With Quote
Old 5th May 2012, 12:55 AM   #677
diyAudio Member
 
danielwritesbac's Avatar
 
Join Date: Nov 2007
I assume that this (attached) is the current schematic?
Attached Images
File Type: gif DIYA_classAB_schematic.gif (51.0 KB, 15364 views)
__________________
Tools, Models & Software for DIYClipNipper boostLM1875 TurboPowerful TDA7293 kitTDA7294 pt2pt ♦ My post has opinion.

Last edited by danielwritesbac; 5th May 2012 at 01:00 AM.
  Reply With Quote
Old 5th May 2012, 02:18 AM   #678
diyAudio Moderator
 
JojoD818's Avatar
 
Join Date: Mar 2003
Location: searching...
Hi Daniel,

Yup that's the one.
  Reply With Quote
Old 5th May 2012, 07:13 AM   #679
diyAudio Member
 
danielwritesbac's Avatar
 
Join Date: Nov 2007
Default Discontinued parts?

The original was dark gray background with dark red print--not readable on some printers), although you'll need some legal size (long) paper and print to fit. There was nothing I could do to make it legible at "birds eye view" (see all at once) on a computer screen, due to the large size schematic.

While looking that over, I spotted a few things:
There was a glitch in the original and Q12, Q10 labels needed repaired. I think I did it right, since the original was mostly readable, but please check.

D6, D7: Led's vary vastly, so the BOM needs a Fairchild model number listed. This enables the builder to check a datasheet to learn the desirable voltage curve and knee.

Parts availability challenges since July 2011:
KSC1845 and KSA992: That is not specific. I hope it means KSC1845F and KSA992F.

2SC3503C is discontinued. KSC3503C is discontinued. KSC3503D is not discontinued but I don't know if it is okay to substitute, and I don't know what other substitutes there may be for these low availability types.

KSA1381C is discontinued. KSA1381E is not discontinued, but I don't know if it is okay to substitute, and I don't know what other substitutes there may be for these low availability types.

SC3503 and SA1381 are a pair and HFE match is currently unavailable, but I don't know if that factor is important.

P.S.
Although the schematic specifies some discontinued versions of parts, the rather beautiful board is not affected since it has numbered references. The only thing about this large project suited for beginners is that the nice board turns complexity into simple soldering. Good job!
Attached Images
File Type: jpg HoneyBadger.jpg (96.5 KB, 15161 views)
__________________
Tools, Models & Software for DIYClipNipper boostLM1875 TurboPowerful TDA7293 kitTDA7294 pt2pt ♦ My post has opinion.

Last edited by danielwritesbac; 5th May 2012 at 07:22 AM.
  Reply With Quote
Old 5th May 2012, 09:23 AM   #680
diyAudio Moderator
 
JojoD818's Avatar
 
Join Date: Mar 2003
Location: searching...
Quote:
Originally Posted by danielwritesbac View Post
The original was dark gray background with dark red print--not readable on some printers), although you'll need some legal size (long) paper and print to fit. There was nothing I could do to make it legible at "birds eye view" (see all at once) on a computer screen, due to the large size schematic.

While looking that over, I spotted a few things:
There was a glitch in the original and Q12, Q10 labels needed repaired. I think I did it right, since the original was mostly readable, but please check.

D6, D7: Led's vary vastly, so the BOM needs a Fairchild model number listed. This enables the builder to check a datasheet to learn the desirable voltage curve and knee.

Parts availability challenges since July 2011:
KSC1845 and KSA992: That is not specific. I hope it means KSC1845F and KSA992F.

2SC3503C is discontinued. KSC3503C is discontinued. KSC3503D is not discontinued but I don't know if it is okay to substitute, and I don't know what other substitutes there may be for these low availability types.

KSA1381C is discontinued. KSA1381E is not discontinued, but I don't know if it is okay to substitute, and I don't know what other substitutes there may be for these low availability types.

SC3503 and SA1381 are a pair and HFE match is currently unavailable, but I don't know if that factor is important.

P.S.
Although the schematic specifies some discontinued versions of parts, the rather beautiful board is not affected since it has numbered references. The only thing about this large project suited for beginners is that the nice board turns complexity into simple soldering. Good job!

Hi,

That is the original schematic, no more dark grey since the boards are already out.

Q10 and Q12 seems to be right where they should be. I have built the official diyAudio Honey Badger prototype using the same files to test the validity of the board. If there is something wrong with the schematic/board label please feel free to point where the glitch is.

D6 and D7 LEDs are just there for indicating V+ and V- are up and running in the board, I believe there is no direct effect on the sonics of the amp and so any Red/Blue LED available at your parts bin or nearest parts shop should be ok.

As for the discontinued parts, most are still available elsewhere in the world, but in the spirit of making this "continent" proof, the official Build Guide shall have a list of potential alternatives which should be, again, available at your local parts shop or favorite online vendor.

  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" build thread Variac Solid State 1190 4th September 2014 02:15 PM
Honey, I smoked the Weller 8200 jackinnj Equipment & Tools 5 25th April 2011 06:07 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 03:01 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