diyAudio

diyAudio (http://www.diyaudio.com/forums/)
-   Group Buys (http://www.diyaudio.com/forums/group-buys/)
-   -   GB for F6 Convertible Clone boards (http://www.diyaudio.com/forums/group-buys/225048-gb-f6-convertible-clone-boards.html)

Tea-Bag 5th December 2012 03:20 PM

GB for F6 Convertible Clone boards
 
3 Attachment(s)
Hello,

By request ,

I am making some boards for the F6 amplifier board as Nelson has posted in the sixMoons article based on the F6 Second Harmonic.
Nelson has blessed a GB.

It's designed to be convertible in the sense that you can -

1. Swap transformers to your liking using a daughter board.
2. Move between the various schematical forms of the F6 without too much effort. A jumper here and there.

Since Nelson has been generous in yet another design for us, this board also reflects that.
-CRT spent a lot of time making the Gerber files. No payment accepted.
-All tooling expenses will be covered by myself.
-Anyone who purchases will be making a donation of $2.50 per main board and .50 per daughter board to DIYAudio via me when group buy is complete. If you don't like that, don't buy the board or complain on this thread.

Future sales will be given to DIYAudio if Variac deems the board fit for the store or Gerbers will be free. The future is unknown for many with the F6 with no SemiSouth R100's around to buy. So unless people make a good effort to note design changes for IRF240's etc, I suppose board sales will be limited.

Prototype boards are currently on order. Pricing is subject to change.
The sign up spreadsheet is in my signature. Payment is not accepted until prototype is functional.

Here is a picture of the circuit board.

https://plus.google.com/photos/11165...27060589464738

This post will be edited. Prices TBD. But ~18.00 for pair of main boards, 9.00 for pair of daughter cards.

Ryssen 5th December 2012 03:29 PM

Do you have a schema of it?How is the inputstage set up?

Tea-Bag 5th December 2012 03:39 PM

1 Attachment(s)
Quote:

Originally Posted by Ryssen (Post 3271597)
Do you have a schema of it?How is the inputstage set up?

Hi Ryssen.
Its based on the schematic listed here.

the only addition is for optional parallel pairs of buffer JFETs.
If one is not running source resistors on the JFets, then using 2xGR type will allow for higher dissapation, if BL grade <8mv IDSS or so is unavailable.

6speed 5th December 2012 03:43 PM

Does the "primary" F6 board follow the UMS mounting spec? Ie. Will this fit on a diyAudio store stock chassis?

I'm signed up either way just thinking about what I'm getting into this time! Thanks for putting this together the layout looks great!

Tea-Bag 5th December 2012 04:00 PM

Quote:

Originally Posted by 6speed (Post 3271619)
Does the "primary" F6 board follow the UMS mounting spec? Ie. Will this fit on a diyAudio store stock chassis?

I'm signed up either way just thinking about what I'm getting into this time! Thanks for putting this together the layout looks great!

Yes, should @ 120mm from center hole of Q1 to Q2.

fredlock 6th December 2012 05:03 AM

Hi Teabag,

Is F6 50 Watt amp? or less power?

nicoch58 6th December 2012 08:01 AM

Have you asked to Bud (as is work is a custom design) to make pin compatible ??

dimkasta 6th December 2012 08:12 AM

Two thumbs up Mike
Signed up and subscribed

Tea-Bag 6th December 2012 10:41 AM

Quote:

Originally Posted by nicoch58 (Post 3272654)
Have you asked to Bud (as is work is a custom design) to make pin compatible ??

No, We just designed the duaghter board around his design.
If there is enough interest for a group buy, then that may be possible from him.

Tea-Bag 6th December 2012 10:42 AM

Quote:

Originally Posted by fredlock (Post 3272521)
Hi Teabag,

Is F6 50 Watt amp? or less power?

Somewhat less. I beleive 37Watts with SemiSouth and no degeneration. The article on 6moons I think spells it out a bit better. I bet you could get it that high with a few mods.


All times are GMT. The time now is 09:02 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