GRLV split and combined, and any other boards Group Buy

[sbelyo]

Hello All...

Since there were a bunch of requests for more GRLV boards I'll do another round.  I've also added the boards listed below that are in demand.

  Also, as a side note if you're looking for boards from my last GB I have one set of Dynahi boards, four or five Dynalo Mini, and a few volume pot boards left.  Send me a message if you need any of those.

Sign up Sheet: https://docs.google.com/spreadsheets/d/1Z1L3MQuuY4ZTUyPQb1qBmVJp8MtC7qEzBUui3z5dFrQ/edit?usp=sharing

Balanced\Unbalanced board (both smt and through hole)

Through Hole  http://gilmore.chem.northwestern.edu/boards/diffinput3.zip

SMT  http://gilmore.chem.northwestern.edu/boards/diffinput3smtd.zip

Diamond Buffer (both smt and through hole)

Through Hole  http://gilmore.chem.northwestern.edu/boards/dbuf1.zip

SMT  http://gilmore.chem.northwestern.edu/boards/dbuf2.zip

Balanced Source Switch (Microprocessor controlled)  http://gilmore.chem.northwestern.edu/boards/baseboardbal3.zip

Dynalo Mini (with TKD pot)

Dynalo  http://gilmore.chem.northwestern.edu/boards/kgdynalobal9.zip

Current Feedback Amp (Electrostatic) Version 2  http://gilmore.chem.northwestern.edu/boards/cfaelectrostat2.zip

BH Ultramini Version 4  http://gilmore.chem.northwestern.edu/boards/kgbhultraminipsv4.zip

Golden Reference Low Voltage Version 6 combined http://gilmore.chem.northwestern.edu/boards/goldenreference6.zip    

 

If you need 4 gang volume pots for these amp boards see cspirou's TKD group buy here:

https://docs.google.com/spreadsheets/d/1qq-ZR84X_Ik1KyHVINC6cdwdEbZ-HRh2Wf2VVBJZBkw/edit#gid=1096418962

 

 

 

Edited March 2, 2017 by sbelyo

[kpeezy]

Thanks for doing another round, I plan on getting at least 4 x GRLV6 combined boards.

Edited January 23, 2017 by kpeezy

[Pars]

You must be a glutton for punishment Steve

I'd be in for some version of the ubal board, maybe others.

[MLA]

+1. The effort is highly appreciated!

I'd be in for the SMD ubal->bal board and a pile of diamond buffers.. 

[sbelyo]

13 hours ago, Pars said:

You must be a glutton for punishment Steve

I'd be in for some version of the ubal board, maybe others.

Yeah, I definitely am a glutton for punishment

I'm interested in that board as well

[charlo89]

Thx for the GB,

I am interessted by megatron but I think I am the only one

[alexd15z6]

Thanks for the GB efforts.

I am interested in GRLV, DYNALO and DYNALO_MINIboards.PM sent.

BR

Alex

[jose]

Thanks

I´m interested in Unbal/Bal, diamond buffer and maybe others too.

[cspirou]

no need to post the attenuator board. I got one from sorenb. I believe he has more if anyone else needs any.

Although I wouldn't mind if you can get this controller board.

 

Edited January 25, 2017 by cspirou

[sbelyo]

noted...

I'm hoping to open up the spreadsheet tonight.  Been a little busy and it's my son's 17th birthday today (time flies)

[sbelyo]

Okie Dokie...  

The sheet is open

https://docs.google.com/spreadsheets/d/1Z1L3MQuuY4ZTUyPQb1qBmVJp8MtC7qEzBUui3z5dFrQ/edit?usp=sharing

So far we have the GRLV combined and split, the Unbalanced\Balanced board (through hole), the diamond buffer (through hole), the dynalo, and dynalo mini with TKD pot.  Of course I will confirm the boards are ok and in final versions.  I would love to build the CFA so I will check to see if it's possible to add that board as well.

[Pars]

Were you going to do the SMD Ubal board? That's the one I was interested in. Also, I assume the diamond buffer boards are single, so you would need 2 of these for each Ubal board?

Thanks!

[sbelyo]

Yep, I'll add the smt boards

[sbelyo]

They're added

[jose]

Add my boards.

A friend of me is interested on SMD boards but depend on price. Can I increase my order when we know the price?

Add

 

Edited January 27, 2017 by jose

[kevin gilmore]

posted final smt version of the ubal to bal board.

the smt boards should be cheap because they are tiny, ubal board is 2.42 x 2.12 and the diamond buffer is 1.46 x .8

I would like 4 of the ubal boards, and 8 of the diamond buffer boards please

[sbelyo]

16 hours ago, kevin gilmore said:

posted final smt version of the ubal to bal board.

the smt boards should be cheap because they are tiny, ubal board is 2.42 x 2.12 and the diamond buffer is 1.46 x .8

I would like 4 of the ubal boards, and 8 of the diamond buffer boards please

You got it...

For the Current Feedback amp, is that board still being tweaked?

[kevin gilmore]

i have not touched that one in a while. don't see any reason to, i like it the way it is

[sbelyo]

I'll add it then.  congo5 says it works and sounds nice.

This is the gerber http://gilmore.chem.northwestern.edu/boards/cfaelectrostat2.zip

This power supply was reccomended by congo5, any objections?

http://gilmore.chem.northwestern.edu/boards/kgbhultraminipsv4.zip

[congo5]

the GRHV is the best, I used the BHultramini because:

It was already built,

and its the same size as one of the GRLV single "fat" boards

so its smaller, cheaper, and works for 400v.

[nopants]

seems like bh mini is ideal for the cfa, simply for the sake of cost effectiveness

[congo5]

it was for me, keeping size down and the cost to try it.

many choices here, how big do you want it to be?

how much are you willing to spend?

If you really like it then try the better supply's, fancy Cap's,

Or Giant heart stopping defibrillator Caps, on and on...

 

[sbelyo]

seems prudent to use it then if you ask me

[kevin gilmore]

remember that there is both a dynamic and electrostatic current feedback amp.

using the bh power supply on the dynamic amp is going to result in much magic smoke.

[spritzer]

Gotta love the magic smoke...