i'm on a roll... the kgsshv

[kevin gilmore]

if someone can build an exstata they will be able to build this...

http://gilmore.chem.northwestern.edu/kgsshvhs.bmp

slap it in any case you want.

power supply this way will be next.

perfect for pabbi1's wood boxes.

[Emooze]

That looks very nice Kevin! Will the full +/-500V board still be available though?

I like the bit about 50 years of Stax too, hadn't noticed that before.

[kevin gilmore]

i'm not going to make 2 runs of boards. will probably change this one to use the 1000 volt fet as

the current source, then you can run it on +/-500.

Tired of custom chassis work (except for myself) so i'm making this as easy as possible to build.

[nattonrice]

Building one t2 case would send me crazy... let alone doing 20 of the damn things.

CNC replication aside, it is still nuts.

[kevin gilmore]

Building one t2 case would send me crazy... let alone doing 20 of the damn things.

CNC replication aside, it is still nuts.

That part is not so bad. When they give me 4 hours of machine time, i know what to do...

I have each and every tool memorized as to position in the tool bin.

The really bad part is dealing with the polisher and finisher.

The polisher ended up with a huge job, and pushed my stuff off a week or two.

So on the current batch i will be lucky to have the chassis finished by the end

of next week. probably one more week.

I'm sure justin has to deal with this in a massive way.

The amp board (of which you need two) is going to be 8.25 x 6.25

The power supply board is going to be 9.3 x 7.7

[wink]

Jaycar sells this.

CAT. NO. YG2782 RRP $19.95 CLICK TO ENLARGE

Spider Coupler Set

Connects to a motor to a shaft that may be slightly misaligned or under length. You may also need a torsional shock absorbing coupling which this does as well.

- Each hub will accept a 6.35mm (1/4") shaft with set screws anchor.

- The hubs are coupled by a synthetic rubber spider.

- 20mm OD x 30mm long QTY 1+ $19.95 5+ $17.70 10+ $15.70 Enter Quantity

[qusp]

Last nutty idea for this year...

Anyone interested in a dynamic version of the T2 with 6as7's as output tubes??

Sort of a re-do of my original MIG amp, except completely circuit board based, with + and - 75 volt power supplies...

Balanced ONLY.

yes indeed I would be!!. I have been watching the T2 project from the sidelines as a very interested bystander, living vicariously through Natonrice. It is excellent project BTW and the case is a work of art (love that stuff, CNC Al gives me wood) but I dont have quite enough desire to buy a set of O2's or other Stax to use with it; and I cant run my JH13 with it hehe; so a dynamic equivalent would be excellent!! pity you wouldnt be doing the casing though. maybe if we badger you enough??

haha 'last nutty idea for the year'.... as if

[nattonrice]

Well you could use the "spare" t2 case...

[qusp]

shutup, you KNOW i'm already thinking that. KG blowtorch and this; this place is going to tip me over the edge into bankruptcy and insanity; not necessarily in that order

[Nebby]

Not our fault you signed up for this site

[qusp]

maybe so, but that wont stop me muttering your names as the nurse serves me oatmeal with a plastic spoon

you have to understand, Tom and I 'help each other' blow holes in our wallets daily

[spritzer]

The present KGSSHV design uses board mounted sinks to make it an easier project for the noobs (lets just look past the whole +/-500V aspect ) but I for one will also build the full, balls to the wall, version.

[Nebby]

The present KGSSHV design uses board mounted sinks to make it an easier project for the noobs (lets just look past the whole +/-500V aspect ) but I for one will also build the full, balls to the wall, version.

What is this full version you speak of? o.O

[spritzer]

The original with chassis mounted heatsinks running at full power. Working with side mounted sinks takes a lot of work and skill which most of the people building this amp simply don't have. So now there is a less powerful version with board mounted sinks which anybody can build. This will be the standard DIY version with the PSU also using board mounted sinks.

[Nebby]

Ah ok, when you mentioned balls to the wall I thought there was another version that I had missed

[spritzer]

Well there are always those 2100V transistors...

[kevin gilmore]

But then you have to go to stacked current sources.

[Currawong]

The original with chassis mounted heatsinks running at full power. Working with side mounted sinks takes a lot of work and skill which most of the people building this amp simply don't have. So now there is a less powerful version with board mounted sinks which anybody can build. This will be the standard DIY version with the PSU also using board mounted sinks.

I have been thinking about getting one of these to deal with such issues, as the small ones would fit on my desk nicely:

[Emooze]

I'd do it. One of the shops at school has a mill about that size and it's way more handy than a floor-standing model any day.

[Les_Garten]

Those are kinda cute aren't they?

[Nebby]

The Proxxon Mini table saw is cute.

[struts]

and bom (missing among other things the xlr jacks) but close

http://gilmore.chem.northwestern.edu/kgsshvbom.xlsx

I cleaned up the V1 BoM correcting a couple of errors and adding Mouser part nos. Now with Kevin.

[kevin gilmore]

actually i have changed to a diferent current source, but its an easy fix.

I actually have 3 versions, not really sure which of the 3 will end up in production.

I just got the fixed bom in an email, will post soon. Cleaning the saeco automatic

expresso machine, and that is obviously more important...

Since i'm addicted to coffee...

[Dusty Chalk]

Vinegar?

[struts]

actually i have changed to a diferent current source, but its an easy fix.

I actually have 3 versions, not really sure which of the 3 will end up in production.

I assume you mean you're avoiding the LSK389 which seems to be real hard to get ahold of. Are you going with K170s? If so, which ones?

Also, please specify BL or GR etc. for 2SC parts where it's critical.