GB Pass SONY VFET Version 2 - AL Boards by Tea-Bag - diyAudio
Go Back   Home > Forums > Commercial Sector > Group Buys
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Group Buys Members group buys

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 24th January 2016, 06:03 PM   #1
Tea-Bag is offline Tea-Bag  United States
not politcally affiliated
diyAudio Member
 
Tea-Bag's Avatar
 
Join Date: Feb 2006
Location: Kennebunk
Blog Entries: 9
Default GB Pass SONY VFET Version 2 - AL Boards by Tea-Bag

Ok, This is a summarized information for the GB of Sony Version 2 VFET boards, to build the amplifier. Somewhere along the lines Nelson dubbed it "AL" and so it is called that.

Sony VFET Amplifier Part 2

http://www.firstwatt.com/pdf/art_sony_vfet_pt2.pdf

My blog on the Sony VFET2 is here.
http://www.diyaudio.com/forums/blogs...uild-blog.html

Here is the front end. 36mm x 175mm

Click the image to open in full size.

Here is the Output Stage. 54mm x 285mm
Click the image to open in full size.

So, here is a schematic to show what is really missing here, and what is added.

Click the image to open in full size.


Here is the built up version showing the connectors, the Aluminum Angle mounting piece. You must be skillfull and patient to drill the aluminum properly. This should not be your first amplifier.

Click the image to open in full size.

Recommended Parts
Here is an important piece. The boards are ideally connected via the following 2x10x2.54 headers and pins.
PN are
4 - PPPC102LJBN-RC - Digikey - S5563-ND
4 - PBC10DBAN - Digikey PN- S2111E-10-ND
Recommended
4- Front end Heatsinks - 637-10ABPE or similar
TL431ACLPR - Buy extra, if something will short, it will likely be these that die. The TL431B were found not to work well. Use "A" type.

Okay, Rundown of current pricing.
Pair of front end boards $15.00
Pair of output boards $34.00

Optional Parts:
4 TO-3 IRF240/9240 can set - two of each = $40
Set of connectors 4-male, 4-female = $18.00
Front end heatsinks set of 4 - $7.00
Dual Rail Power supply boards $25
See http://www.diyaudio.com/forums/blogs...amplifier.html for more info.

Shipping generally starts at $8.00 international or domestic for set of PCBs.

Sign up on spreadsheet and send me a private message with your email and I will send you an invoice.

GB for these will end 2/14/2016 at 11:59PM. This will fall in the middle of the Chinese New Year period so board production afterwards may be a little delayed. They will likely ship in the beginning of March.
__________________
Salas Boards GB 2016 #1,SHIPPED| Hot-Rod DCB1 boards and kits IN STOCK, PM|M2 Clone board GB SHIPPING/Have extra stock PM| SONY VFET 2 AL Shipped

Last edited by Tea-Bag; 25th January 2016 at 08:47 PM.
  Reply With Quote
Old 25th January 2016, 11:36 AM   #2
diyAudio Member
 
Join Date: Aug 2002
Location: Toronto, Canada
Hi Tea-bag,

I might have missed them from your blog, but what are the dimensions of the boards?

Thanks,
Dennis
__________________
We are fearless amplifier builders. A little heat doesn't scare us at all.
- NP 2002
  Reply With Quote
Old 25th January 2016, 12:19 PM   #3
Tea-Bag is offline Tea-Bag  United States
not politcally affiliated
diyAudio Member
 
Tea-Bag's Avatar
 
Join Date: Feb 2006
Location: Kennebunk
Blog Entries: 9
Quote:
Originally Posted by Dennis Hui View Post
Hi Tea-bag,

I might have missed them from your blog, but what are the dimensions of the boards?

Thanks,
Dennis
I missed that, and it is an important point. I will add it in to both. Thanks.


AL FE 36mm x 175mm
AL OS 54mm x 285mm
__________________
Salas Boards GB 2016 #1,SHIPPED| Hot-Rod DCB1 boards and kits IN STOCK, PM|M2 Clone board GB SHIPPING/Have extra stock PM| SONY VFET 2 AL Shipped
  Reply With Quote
Old 6th February 2016, 06:52 PM   #4
diyAudio Member
 
Algar_emi's Avatar
 
Join Date: Oct 2002
Location: Canada, Qc
Hi All. These are my results, and maybe someone can exchange some VFET with me to complete each other kit. I have 4 of each K82/J28.

My results are (at 0.5A)
2SK82:
7.98/7.95 (good pair)
7.86
9.60

2SJ28
7.14/7.16 (good pair)
6.54
10.25

Thanks
SB
  Reply With Quote
Old 8th February 2016, 02:51 PM   #5
Tea-Bag is offline Tea-Bag  United States
not politcally affiliated
diyAudio Member
 
Tea-Bag's Avatar
 
Join Date: Feb 2006
Location: Kennebunk
Blog Entries: 9
For 2SK
I have a 7.66 and 7.8 available to to trade for the 9.60
For 2SJ
I have a 10.22

I would want to send these for you to measure to see if they match yours enough on your conditions before we horse-trade on anything. For the 2SJ, I might sell you mine as opposed to a trade, as I dont have anything close to 6.54.
__________________
Salas Boards GB 2016 #1,SHIPPED| Hot-Rod DCB1 boards and kits IN STOCK, PM|M2 Clone board GB SHIPPING/Have extra stock PM| SONY VFET 2 AL Shipped
  Reply With Quote
Old 9th February 2016, 01:35 AM   #6
diyAudio Member
 
Algar_emi's Avatar
 
Join Date: Oct 2002
Location: Canada, Qc
Hi Tea-Bag. Yes I agree it will be safer to measure them in the same condition.
Send me a private email and I'll give you my address. Thanks a lot
SB
  Reply With Quote
Old 11th February 2016, 06:51 PM   #7
Tea-Bag is offline Tea-Bag  United States
not politcally affiliated
diyAudio Member
 
Tea-Bag's Avatar
 
Join Date: Feb 2006
Location: Kennebunk
Blog Entries: 9
THIS GB will close at the end of 2/14/16. Please sign up on spreadsheet and send me a PM if interested. Thank you.
__________________
Salas Boards GB 2016 #1,SHIPPED| Hot-Rod DCB1 boards and kits IN STOCK, PM|M2 Clone board GB SHIPPING/Have extra stock PM| SONY VFET 2 AL Shipped
  Reply With Quote
Old 14th February 2016, 12:10 PM   #8
Tea-Bag is offline Tea-Bag  United States
not politcally affiliated
diyAudio Member
 
Tea-Bag's Avatar
 
Join Date: Feb 2006
Location: Kennebunk
Blog Entries: 9
Okay, I am closing this GB at the end of the day, and ordering boards tomorrow.
Please PM asap if your interested. I intend to have very limited stock of these boards afterwards, and because of the lack of availability of parts, not another GB.
__________________
Salas Boards GB 2016 #1,SHIPPED| Hot-Rod DCB1 boards and kits IN STOCK, PM|M2 Clone board GB SHIPPING/Have extra stock PM| SONY VFET 2 AL Shipped
  Reply With Quote
Old 20th February 2016, 07:17 PM   #9
diyAudio Member
 
Algar_emi's Avatar
 
Join Date: Oct 2002
Location: Canada, Qc
Tea-Bag your have mail. Thanks SB
  Reply With Quote
Old 4th March 2016, 01:17 PM   #10
diyAudio Member
 
Algar_emi's Avatar
 
Join Date: Oct 2002
Location: Canada, Qc
Is the GB closed, are we going ahead, are you asking for payment?
Thanks TeaBag
  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
Tea Bag PSU flocchini Swap Meet 5 9th November 2015 01:04 AM
Potential GB for Jensen transformers for Sony VFET project Dennis Hui Group Buys 450 13th March 2015 03:46 PM
FS: 2x F5T and 2x PS Boards Tea-Bag Version camshaft Swap Meet 3 22nd April 2013 04:21 PM
WTB URGENT Tea-bag's F5T PSU boards Nikitas Swap Meet 0 9th December 2012 05:14 PM


New To Site? Need Help?

All times are GMT. The time now is 02:11 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2016 DragonByte Technologies Ltd.
Copyright 1999-2016 diyAudio

Content Relevant URLs by vBSEO 3.3.2
Wiki