spritzer

10K pot? It is supposed to be 1K

That is pretty much the PSU the mini HV uses and all the older KGSS amps.

It's all fun and games until somebody plugs in a 400V transistor. "It had the same footprint!!!" That's why only hardcore tuberollers try anything with an octal base in the BHSE....

I want one just to rip it apart...

Now, now Marc... attacking the integrity of Wikipedia!!??!! For the record here is the BHSE vs. the KGSSHV mini Given the gain it's hard to go much lower than that.

Bigger is better for PCB work.

They are mosfets but better. We will use them in the new Carbon amp for which I hoped to have the PCB's tomorrow. Just checked the tracking and they went their usual route except not going from the UK to Iceland but rather UK to Japan... Fuck!!!!

Now here is a thought, build a Blue Hawaii with SicFets instead of the tubes. It has come up to make a cross between the ST and the BH in the past which would be easier to build and use some of the pentodes.

That is the stock even after Kevin and I bough enough parts for life.

Don't use any treatment that might oxidize the panel. That was the biggest obstacle we encountered as the instructions from the manufacturer suggests some nasty stuff.

To add to your pleasure I will probably do a third version. It will be tailored to the parts I can buy in bulk but leaning more towards the original design. I've been stocking up on parts just in case I build some so a special version is in order.

Yet they were the "runt of the litter" so I sold them off. There is a pronounced difference but that is to be expected given how different they are.

Looks excellent!!! Thermark is what we use on my panels. It works well but has to be used with some care.

Left is now a rotary power switch while right is a 4 gang pot.

I figured I had to post when this one was up and running again. Sounds awesome...

Not a whole lot of fun soldering those by hand though...

Stax used 2SC2291 but the schematic has it hand written on it "or 2SC3381".

One of these days we will have to go SMD or some mix of SMD and through hole.

We can use the Fairchild parts but I don't relish the thought of having to do the matching for a couple of T2's. I might have a line on some 2SC3381's so there will probably be two layouts.

The 009 on the KGST is indeed just about perfect. We will see some further development of that circuit in the future as I have some ideas... The circlotron will come but I doubt many will be crazy enough to build it. The PSU scares me no end and it will be the first amp to have a very specific BOM as you can't just use something at this level.

That would be why you didn't see any spacers, they are inside the drivers.

Kevin will get some TKD's soon as I get my stash shipped from Japan. The 4CP-601 is only about 5000Yen...

I all but abandoned the project when the difference between new and old 009's came to light but I did just order PCB's for it. Who knows when I'll build them though...

KGSSHV/KGST/KGSSHV Carbon etc. all use these.

No way the amp is responsible for that, that was a diaphragm issue. Basically, the diaphragm has to go back in, exactly the way it came out of the driver. That includes the spacers which Stax put there to perfectly align it.