spritzer

Is it just me or is anybody else really annoyed by the BS Koss have spewed claiming to have invented all of this? I very much doubt that they were the first ones to wire up each cup separately for stereo even though stereo was brand new at that point. So they do that in '58 and Stax release an electrostatic stereo set in 1959?

I just ran the numbers and the parts cost is about 150$ for the amp section. Most of that are the teflon sockets and all the PSU bypass caps though.

That does look an awful lot like a 6 pin din with a different collar. That would be my first place to look as you can get nice metal ones for not a whole lot of cash. It's hard to compare these with the Stax since the design is so vastly different. I'd also venture a guess that the actual diaphragm material and its tension is far more important than the pentagon stuff.

That's pretty much the same as here. We had a bit of snow mid-may (mostly in the north though) but now it should be clear sailing until mid Sept. After that anything can happen....

The assembly is more like the SR-Omega but with screws this time around. He's sent me a PM on the other site so I'll take it from here...

Can you post some pics of the plug? Most of these have some solid core which is then covered in plastic material so if you can simply peal off the cover, install new wires and then glue it all back together again then it wouldn't be too hard.

I have dozens and dozens of them so just drop me a PM with your address so I can figure out the shipping.

Blasphemy!!!!!!!!

These are not drop in replacements for either stock Stax sockets or the WPI stuff we have been using. They are fastened by a screw or collar from behind the panel but these teflon ones will need screws for mounting. On a thick panel it isn't an issue but on thin panels like the old KGSS boxes or most of the Stax stuff it needs visible screws.

Looks like the cable curse holds true. Gotta love mad design moments coming back to haunt us.

It could be done but will require quite a bit of work.

Just so you all know, a brave young Stax extension cable had to die to make these connectors fit perfectly so keep it in your thoughts...

Cool. The price comes to 2.71$ each and the shipping should be 2-4$ depending on location. Btw. Here is a pic:

I've seen how the dough is made at Eldsmiðjan so I'll never eat there again. The note the management had left to the people working there about serious complaints from the health department was just too funny. I just kept it simple and went with Domino's. The quality has always been great (run by bakers from day one) but it's been getting even better lately.

Those heatsinks aren't really needed but certainly won't hurt. Normal thermasil pads will be fine at these voltages though. If anybody needs PCB's for the teflon Stax sockets I have some extras. The fab house made way too many but the cost was pretty reasonable, 2-3$ each.

This thread is making me hungry after finishing a whole large pizza...

There was a brilliant piece I read about these less common tube circuits back when we were rebuilding the ES-1 but I can't find it now. It should be here somewhere but I have the annoying habit of just throwing everything in one folder and not sorting it... I want everybody to be able to build it so focusing too much on how the circuit works might put some people off. Some basics are necessary (why you can't adjust the DC balance at the output etc.) but I still remember reading the KGSS article all those years ago and trying to gleam something useful from it in that wall of stage this and feedback that.... I also like the idea to have the boards fully self sufficient so one doesn't need the BOM or any documentation to finish building it. All the necessary info should be on the boards and no stupid vertically mounted parts.

The bug will live on forever. A family friend just restored his and there were replacement parts available for pretty much everything.

Makes MSB and dCS look cheap by comparison.

It has magic glowing shiny things which makes loud become moar loud?

I've done my darnedest to give Stax transformers a fair shot but in the end they are not for me. They do offer bang for the buck though...

SG being a clueless idiot? Clearly the end of days...

Yes and no. It will always be way over spec just to be safe.

I'm only talking about using the basic ESX circuit so the output tubes will be ECC99 with ECC81 drivers. The psu will be something simple which does the job but follow the same lines as the latest stuff from Kevin. I like the idea of using a separate psu for the bias supply with it's own regulation and it would be easy enough to just add a couple of voltage divider spots onto the board for 230V and 500V output so no adjustment necessary. Since we are probably going to need a custom transformer then we can do pretty much anything from the simple N- and P-channel affair in the old KGSS article to a version of the BH psu with split secondaries. A delay line could be added but it just adds cost and really isn't needed.

A ESX would be simpler to build than a BATE and the lack of capacitors would make all the crazy people out there happy. I like the ESX because it uses so few parts and while the whole cross coupled thing looks complicated, it really isn't in a way and people never need to know how it works. Well that and it sounds amazing once it is up and running properly. The balanced inputs are "free" here and having guided dozens and dozens of people through amp builds they have never caused any issues. Not much difference between a dual pot and quad pot and steppers are cheap on ebay. The ESX amp circuit is cheap to build so only a few $ in resistors and tube sockets plus four 2$ caps and that's it. 10W plate resistors would be pretty expensive so a simple 10M90 CCS isn't that much more expensive with much better performance. A spud... yeah let's class that with KG's gas tube amp...