spritzer

Looks good, one thing to check though, is the pot dead. That has happened once to me.

Do diode tests on the transistors, that's the only way to check while in the circuit. Other than that, just change them out.

Well this is up and running... I decided to scrap my old hacked KGST boards and reuse the chassis. This one runs at +/-350V and sounds brilliant. Very stable too and no heat issues with the 2.5" sinks.

That's what I'll do. No sense is using that POS pot. I'd also bridge all the resistors involved with the pot.

I've never seen a pot that doesn't have the wiper in the middle. The PCB has to be wrong.

I used the old IBM boards back in the day and got a Thermaltake board last year. It's quite nice but doesn't like random bits of wire landing in it for some reason.

Thanks for that info, much appreciated. It's nice to know that the odd baffle plate was actually supposed to be a stator. Always seemed that way to me but no way to confirm. Not sure why these drivers are in there but it looks like they came from the factory like this. There are only four wires in the cable so either it had to changed or they were always like this.

The SR-X Mk3 Pro is an interesting one as it is the rarest of all Stax headphones (well save for the SR-2 which doesn't actually exist...) and sounds stunning. The 4070 is the closed Pro model so a bit special too.

All 'stats can suffer from this. Simply a byproduct of the design but the 009 seems more prone than others. No doubt that is due to a mixture of the large stators and the diaphragm coating. I'd always discharge the sets when unplugging. After fairly large number of sets passing through my hands I've never had this problem. Could also be due to the weather as the swings aren't as violent as elsewhere. Here it is always cold or a bit colder or a tiny bit warmer.

The basic recipe for white bread would be something like this: 1L water 1900gr flour 30 gr salt 50 gr yeast The flour should be type 550 but if you use something stronger (i.e. most US grown flour) then use a bit less. Flour is hard to pin down when it comes to exact proportions as it does change quite a bit so some experimentation is needed. The yeast is bakers years which comes in bricks so any dried variety you would need less of it. You can also add 50gr of butter to the above recipe for a better, smoother crust and and denser foam structure. Water temperature depends on what you are going to do with the dough. We use cold water plus ice chips for anything being frozen and up to 30°C for rye bread where more than half the liquid has already been mixed the day before. Never go over that though as you raise the temp of the dough by kneading it and you will have problems as you approach 32°C. For wholewheat the same recipe works just fine, just mix flour and wholewheat so for instance 1/3 wholewheat against 2/3 flour. You can go to 50/50 but then you get into trouble. Edit: Forgot about the mixing. Our pro machines operate at two speeds so for something like this we'd say 5-2 which means 5 minutes on low gear and 2 minutes on high gear. This does vary between machines and flour though so it's hard to pin down. One more thing, never add sugar to bread at least not sucrose. It just ruins the crust and makes the yeast go a bit nuts. This is fine for sweets but for bread it's best to just give the dough time to mature and let the yeast break down the flour. This means more maltose and a better taste.

Yup, a sound plan.

There is nothing physically wrong with them, it's simply a charge impeding the driver. Said charge will dissipate over time and the driver return to normal. As to why this happens, I have a theory that the stators generate this effect due to their construction.

Also the 009 drivers aren't broken since they will bounce back.

Nice catch, it's indeed reversed. Do you have any pics off the bottom of my amp? It has some crazy stuff going on there...

The ad is indeed rather misleading when it comes to the inputs. Only one should be used at a time. For the volume control, I've no luck finding a replacement which would work on the PCB outside of a custom order. Alpha has a nice 9mm option but that would take 500-1000 units... The TKD 4CP-601 might fit but it's an odd size so the best bet is probably to move the pot to the front panel and run 9 wires back to the holes for the old pot. I'll post pics of this when I'll get my amp. Also, some components really need to be replaced as they are overloaded as it is. Using a RN60D where we used a 3W resistors in the stock KGSS can't be good.

Mmmmmmm.....

Ain't that the truth.

New PCB too with output resistors. Still a mess though and those heatsinks should be soldered down and grounded. As for the pot, it is a linear unit (says 50KB on the back) with resistors to fake the log curve. This never works correctly so I for one will just remove it and put in something else.

No starter is that old, all the germs have long since been replaced by what ever is in the environment. That's why there is no way to move a specific germ from its local such as the one found in San Francisco. It can't grow anywhere else artificially unless you'd use lab grade environment. We can buy specific starters which are made in various places but they will last two weeks max, then enough of the germs have been replaced so it isn't original.

They eat up 10W in the crossover alone...

Happy Birthday!!!

Happy Birthday!!!

Happy Birthday!!!

Looking good!!

Those are BJT's... I I doubt you've killed a resistor while doing this so simply swapping in all new transistors should clear it up.