spritzer

Indeed, all the FOTM bullshit alerts going off.

The boards are onboard.

Excellent!! The small box of volume pots should be there shortly.

Looks like I managed to cure the second channel imbalance of the HE90's. The old coating was probably acting up so I cleaned the mylar and started off with a fresh coat. Now they are rock steady. The same issue seems to plague the HE90 drivers as does the HE60, the coating looses some of its properties and it causes the mylar to collapse into one of the stators. I suspect the majority of the damage to the other driver was caused by the Single Power ES-1 but there the diaphragm would be pushed to one stator even with the smallest of pressure changes. To try and combat this I sprayed that stator with an anti static coating which seems to have helped. A small bit about the glass stators too, what were Sennheiser thinking with these? They are so fragile that just breathing on them causes them to crack but it does make me wonder what can be done with modern glass technology. The tooling costs would probably be massive but I'm still curious. I haven't tried them with the Octave yet but it does differ in some meaningful ways from the HEV90 so it should sound pretty different. You are never getting any usable bass out of the HE90, just look at the measurements Senn posted back in the day.

93$ a month is just insane. We have a few packages here that are 24.6$ a month with everything unlimited (yup totally unlimited 4G data) and no contract.

The Carbon has the same issue as the BHSE and the T2. Ruthlessly revealing and the HE90 are not a good match, especially if you are all too well aware of their shortcomings.

Look what just showed up. I decided to treat myself for my birthday... Sounds brilliant with the HE90 and is pretty much required to use them. Also the build quality is nothing short of stunning. Now I just need to address some imbalance in the HE90's as now that the left driver is up and running properly the right one is a bit too weak by comparison.

You can get the foam from Stax repair centers. It comes with the thin wool used in the Lambda/Lambda Pro

Pretty much any strong glue will work but I'd stay away from epoxy as it might do some harm to the materials. I've also used contact adhesive which is very strong once it has been allowed to cure.

One of mine actually shipped in that yellow color as they are like that on the inside as well. The baffle on the other hand is the SR-3/5 color and shows no discoloration. As for the earpads, the first SR-1's had earpads similar to the HE90/HE60. High and thin

There is a difference in the sound but also in what earpads should be used with them. I would also recommend refurbishing them as there are some things in the cups that might require attention.

This one has most of the parts of the SR-2 and SR-3 so a late one. The early ones are very different, quite a bit smaller and made from very different materials.

That's the last version so ca. 1967.

Just post the pics somewhere and link to them, imgur for example. I have three different SR-1's and I like them all but Stax has certainly made better. It's remarkable how long they do last and two of mine fire up instantly. The third one needs some work but it shows how electrostatics do last. I spent a few hours yesterday listening to my Quad ESL57's which were made in 1968 and are 100% original except the PSU and crossover parts were refreshed a couple of years ago. Keep them out of the sun and they will outlast any cone speaker...

It's much cheaper to make, that's why.

Having the joint on the top like that with no internal support really isn't the best move. Still they have been doing it for 22 years so the failure rate must not be that high. I've never had one fail but then again my Lambdas don't see a lot of use.

It's something I could look into. I'm going to build one and see how I like it. I'm slowly working on a full size version of the circuit so that takes precedence at least for a while.

Communication was never their strong suit but I have little doubt that everything is ok. Some customers just need a lot of hand holding and places like PJ aren't for them.

It must have been a bad batch as these work perfectly. Some of my first ones had the center bump but I returned all of them.

I do... I do...

They work but if you want something that is nice, then you need a custom plug. Stupid simple to make though

Thanks.

Yup that's the one. So so quality but the fit is ok.

Those are the Chinese Stax sockets that were on Aliexpress but I've never seen this version before. It looks ok but the mounting is a bit odd with two pegs on each side. The tube is actually 6C5GT so pretty much half a 6SN7...well in a way. I have some US ones here as well but I'm just running the included tubes first.

Well it did end up costing me about 730$ all in so not that cheap. Fees in China, shipping from there to here and finally customs BS here. I'd rather have a SRM-323S but you know... I also need to do a lot of work to it before it is safe to use. It's impressive that almost none of the screws in this chassis actually work. Everything is loose and rattling, screws are too short with no actual purchase and the builder has never heard of lock washers. Now some pics, as you can tell by the bottom of the board, this is bodge city!! The PSU is completely unregulated and pretty much as basic as they get. CRC filters but that's it. Finally the VU circuit. Clearly off the shelf unit like the delay line above.