2018 PCB Group Buy with TKD pots

[Blueman2]

1 hour ago, sbelyo said:

one is neg and the other pos?  I'll label this as a set then correct?

Correct.  Right is Positive with Bias voltage supply, Left is Negative with low voltage supply.  

[Pars]

Some Gerbers...

Schottky diode bridge board, vertical diode mtng:

Potentiometer:

1. TKD 4CP601 Only
2. TKD 4CP601 / 4CP2500
3. TKD 4CP601 / 4CP2500 / Alps RK27 Quad

GRLV 35mm SiC diodes

https://www.head-case.org/forums/applications/core/interface/file/attachment.php?id=21170

Latest CFP2

https://www.head-case.org/forums/applications/core/interface/file/attachment.php?id=20304

Note for those wanting to do one of those balanced: you might want a uBal board to front end that.

 

Bridge_Vert.zip

TKD 4CP601 only final.zip

TKD 4CP 2 pot final.zip

TKD 4CP 3 pot final.zip

EDIT: If you have either of the CP2500 boards run, make sure they thru-plate the slots.

Edited January 31, 2018 by Pars

[sbelyo]

Many many thanks...  I'm thinking the 2 pot board would be fine unless you all want the alps support.

I shall clean up the initial post and add the boards we're considering in there

[MASantos]

I want to add cfa2 boards to my order. Are these for the single ended version? Do I need one or 2 boards for a 2 channel amp?

[Pars]

For the CFP you need one board per channel, so 2 for a stereo SE, 4 for balanced.

[hfhimeka]

When do you expect to pull the trigger on this GB?  I'm trying to figure out how much time I have to research the # of boards I might need.

[MASantos]

16 hours ago, Pars said:

For the CFP you need one board per channel, so 2 for a stereo SE, 4 for balanced.

Thanks!

[sbelyo]

On 2/5/2018 at 2:01 AM, hfhimeka said:

When do you expect to pull the trigger on this GB?  I'm trying to figure out how much time I have to research the # of boards I might need.

I will add some boards in the next day or that people are requesting, then leave it open for 4 weeks or so.

I added the TKD 4CP2500 to the sheet as well

Edited February 8, 2018 by sbelyo

[Tinkerer]

The HV900 revised boards still aren't up on the sheet yet. I know I might be the only guy that wants them, but I will pay the price for a set even if it's kinda high. I need it to finish my build, and it would sure be nice to get them with the couple other things I want in this GB.

[sbelyo]

Sorry Tinkerer...  I added it now, as well as the THAT340 adapter PCBs.

[MLA]

Another board suggestion: the PSU board for the tube based ubal/bal board?

[sbelyo]

Agreed...  I'll change the title to include the PSU with the set

[sbelyo]

As far as the THAT340 adapter PCB's go, I'm checking to see if the board house can deal with boards that small.  If not, I was thinking that we could do one board with several adapters on it then have a V score that would separate them.  What do you all think?

[DronEvil]

I'm interested in some GRLV and HV boards. Is it cool If I just add myself to that spreadsheet? This is my first GB on here so I just want to make sure i'm follow proper etiquette.

[mwl168]

Just added my orders to the spreadsheet.

I have one request; for the unbal/bal tube board, since we'll be mounting the tube sockets on it, should we consider ordering the boards in 2mm thickness?

[sbelyo]

I'd agree with that, adjusted.  The Dynalo Mini also adjusted to 2oz.  Thanks to whoever cleaned up the columns.

The board house can work with the THAT340 adapters so those are a go.  I'll move the links to the board files onto the 1st post so everyone can see what is being ordered.

Also, I feel like I forgot one board that someone wanted.  Does the list look complete?

Edited February 22, 2018 by sbelyo

[mwl168]

Wonder if anyone is interested in the solid state ubal/bal and diamond buffer boards?

[sbelyo]

good question...  I have one set left over from the last one that's reserved for steef.  I think I may have one or two extra as well.  If anyone wants a set let me know

[Pars]

After working with the mini boards in 3oz copper, I would strongly suggest going 1oz... Little parts and the heat to do heavy copper isn't a good combo. But I won't be buying any, so go with what the majority wants.

[sbelyo]

That makes sense.  I moved it down to 2, does everyone want to go to 1?

[cspirou]

The tube ubal/bal boards are 2 x amp boards + 1 x power supply board?

Also KG had two versions, the tube mounted on the same side as the components and megatron-style where you can mount the PCB on the top plate so the tubes can stick out the top. If there's a vote I prefer megatron-style.

[sbelyo]

6 minutes ago, cspirou said:

The tube ubal/bal boards are 2 x amp boards + 1 x power supply board?

Also KG had two versions, the tube mounted on the same side as the components and megatron-style where you can mount the PCB on the top plate so the tubes can stick out the top. If there's a vote I prefer megatron-style.

I believe that's the config but I will confirm with Kevin.

For same side vs megtron I vote same side...  Feel free to cast your vote and we'll go with the majority.  Can we setup a poll in this thread?  Or is that not possible?

Edited February 22, 2018 by sbelyo

[mwl168]

I vote the Megatron style.

[MLA]

Megatron style +1

[Blueman2]

Note to people signing up for the GRHV boards, this is the pair of boards (Left/Right or -/+).  The pair are what you typically need for one high voltage amp.   DronEvil, samsie and bluebyte60, you signed up for 4, which means enough for 4 HV power supplies.  Just wanted to make sure you wanted that many.