spritzer

Pain to assemble which is why I went with IKEA...

Some further news, the first use of the new power board: Sorry for fucking up the focus... Works like a charm and fits perfectly in the spot it was designed for. No more flying wire connections for voltage selection and primary connection. Part of this: My personal amp... well until somebody pleads with me long enough and I sell it. That transformer is from my bulk order and it is seriously awesome. Can't tell if the amp is on with an ear right next to it...

That's basically it. Electrostatics only appear to be simple in theory but then again, most don't understand the theory. Take something like the Stax Lambda, almost all of them share the same housing, basic driver building blocks (stators and diaphragm assembly), cable and earpads yet they can sound very different from one another. Hell some use the same diaphragm material yet sound nothing like one another. I blame the turtles....

It's next on my list but I've run out of parts. It will be complete Mouser amp too with Fairchild output devices so part sourcing is made far easier. Also a 400V design is cheaper to build as we can go back to single caps in the PSU. Those Edcor transformers are excellent plus it's easy enough to remove the endbells and mount them sideways.

I like to do things in bulk. Another thing of note, a comparison of the old KGSSHV boards and the new HVk boards in the same chassis...

Well that too.

Simple fix for that, MOAR gain.

Injection molding?

Is there a better way to spend a Saturday than with a pile of KGSSHV boards? I did confirm my suspicion that BUL216 doesn't work without serious mods as an output device. It's a shame as it can just about take +/-450V. There is another pile of boards that was supposed to be tested today but I've run out of parts at the moment. That pile will include a documented and tested way to run it at +/-400V but at higher current with the onboard sinks which should be interesting.

Genuine Stax sockets which means the front panel had to be modified a bit.

Well if he's inside the EU then he's paid 20% VAT (well should have though there are ways...) which would account for some of the difference. Still it's good to buy from Justin as the stuff doesn't loose any value. I'll go off and pet my custom BHSE...

What about Lexan? Polycarbonate is silly strong...

It feels a bit James Bond villainy but this is very cool indeed. I had a lengthy discussion about this and superconducting windmills working under storm conditions recently with some friends who work with this stuff. Crazy amounts of power possible if the stuff can actually be harnessed. They did say our current geo-thermal plants were impossible to build and maintain but they keep working perfectly.

Needs MOAR IRON!!!!!

Given how good the Mk1's are then they should fetch far more than the current market value. Well that and nobody wanting the Mk2's unless they are the very early ones. Ouch on the channel imbalance, that's not fun.

Cheap....

The front end draws almost no power so a stock KGSSHV psu setup should be fine. To get a 300V output you need a transformer with far lower voltage, you need to adjust the voltage divider and set the zeners to 350V.

Get cracking!!! We expect results by next week!!

A F5 in this chassis would run very hot indeed.... There is a larger version of the same chassis which might work with the bias turned way down. For the HV, chassis like this means I can turn up the current and I have some even smaller ones in mind which would have to use a simpler PSU and lower voltages. Running at +/-400V opens up plenty of options for output devices in current production and MOAR CURRENT!!!!

I got the Dell Venue 8 for Christmas and while it utterly kills the ipad for my needs I wouldn't even try to give one to my mom. It's quite small and dinky and the Win8.1 tablet stuff only goes so far and then you left with navigating standard windows stuff via the small touchscreen.

Perhaps it is a time the mafia fixes the squeal issues once and for all? That said Koss should really update the design, it's been exactly the same since at least 1989...

Nope, bought off ebay.

That's excellent news!!! Speaking of offboard... say hello to the new super tiny KGSSHV's.... This is a new version of the offboard design I did for my own use. Cut down in size as far as it can go and 2SA1968 only. The power supply in the pics is a version of the BH supply as even the KSSHVk PSU is roughly the same as the entire chassis. That said, I'm putting the finishing touches on a version of the HV psu which will fit in there...

Well I can attest that a Lambda driver in a HE90 shell sound pretty spectacular. My Omegas now just gather dust...

It has a DC plug on the back so it has to use a switcher to generate the HV. Whether it is regulated or not I have my doubts as Stax only regulate when they absolutely have to. In the SRM-300 they were running the output devices right up to the limit