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I haven't had much time for DIY headphones recently but I just sent for some parts to be made and one might be a truly unique stator principle. More on that later but I've been using these lately and finally post about them after seeing that SJY pile of fail: I found this Hifiman Edition X for next to nothing as the pads were trashed and both drivers were blown. Gotta love that Hifiman build quality... Anyway, the plan was to design some drivers for this shell and then make my own version of the Shangri-la as the stock ones are frankly utter crap. Given the complex shape of the baffle in these I put it off for months but finally got off my ass and made these: This is the same piece but reversible for each side. There is just enough space in the housing to cram Stax Lambda drivers in there and I just happen to have quite a few in stock... shocker. Then we ended up with this: The back grill was glued into place but with the driver glued to the baffle, it holds it all in place as there is no extra room in there. I added the coarse foam to back to make them look more stock as I didn't have any of that black cover Hifiman uses. The baffle uses the stock neoprene gaskets from the planar drivers and it's okey for the seal but not quite perfect. The drivers in these are Lambda Signature units (no real reason I chose those, just what came to hand) and the cable is a Stax extension cable. I added the strain reliefs to the housing and the cable is so tight in there that it doesn't need any more fixing in place. Then they were finished off with some sheepskin earpads off Aliexpress as the stock Hifiman units are trash. These are the drivers with the protective mesh in place (just as they were in a Lambda/Sigma) but I also ordered some baffles with slots cut in them so I could put in thinner drivers to have a bit more space behind the drivers.

So a new electrostatic seems to be incoming: https://apos.audio/products/sjy-argos-electrostatic-headphones?utm_campaign=hyperfuse_last_day%20%2801KZW4554JVNW58G1HET4TN43W%29&utm_medium=email&utm_source=alex_nongdpr_never_subbed_active_180&_kx=cd77Rbf3yu6_OAujM-M4VU1ihuQFsjtyVcb-jl8r-OKxvi62Czezy2yxdLQUUnAj.Ldk8SW I've been keeping an eye on them for a while, no idea what that company is but hey, more the merrier and all that. I just saw the new updated page for these and it is just what the fuck, are they retarded? First off, "fully vented drivers" being spun as something that is positive. Hello, what is the number one rule of planar design? Something about an infinite baffle? No? Anybody here have any fucking clue what they are doing? No? Let's spin our engineering ineptitude as a positive Yes, that is what the drivers need, room to breathe. A common problem with all planar drivers is that they are just being suffocated. What a novel idea and people making planars for 70+ years have clearly all been wrong. Seriously, who thinks the actual reason is that the drivers are horribly unstable so the extra pressure from a sealed baffle would knock them out of balance. So instead of fixing that, let's just employ marketing wank. Then we have the cable... what the actual fuck. Just look at this thing: Anybody who makes a braided cable for electrostatics needs to be taken out back and beaten repeatedly with a copy of the Art of Electronics. The whole point of the fucking cable is to minimize capacitance... not add to it!! Now this looks like the cheap crappy headphone cables coming out of China so I very much doubt it's high voltage credentials. I also love the Y split on a commercial set of headphones... a piece of clear heatshrink. It's also 1.5meters in length, probably to cut down on the pile of extra capacitance this turd adds to the load. Then you can get a proper extension cable and have the headphones reach anything as these are hardly portable.

Wait, what? Transitioning back on track. 😉 Bill Evans Trio With Symphony Orchestra (full album)

Season 4

(not Bill Evans) Schumann: Complete Symphonies by Los Angeles Philharmonic (2026) https://open.qobuz.com/album/t0z8is48e0tzb Example: I don't think I have ever listened to all four symphonies in a sitting (2.25 hours). This new release is good. Mustavo and the LA Phil sound good. The engineering is solid, but not amazing. On the 'Platoon' label? It is interesting how the works flow, 17 tracks really sounds like one piece.

Black Sails

Finally the PCB's arrived for the Kiwi Ears headphone drivers: Just three different PCB's needed, on the left is the diaphragm ring which is a 0.6mm pcb but with no solder mask so it is actually 0.51mm. This has to be ENIG to make it completely flat but most fabs require that anyway. Film is 2um mylar-c as that is so simple to get and relatively easy to work with. In the middle is the dust cover holder/spacer. I made this 1.6mm thick as that way it clears the stock lip on the baffle that was around the dynamic driver. I used the first one as spacer and then stacked up the driver sandwich. For the dust covers I used the same mylar as the diaphragms but not stretched as much Finally the stators, 1mm ENIG pcb's and this is the outer side with the inner side having a smaller active area, aka like the SR-007. Holes are a bit less than 1mm but that can easily be altered for another run. Here they are assembled with the only alterations to the baffle where I counter sunk the mounting screws. There were just the three holes there in a row and with the earpad mounting plate being flush to this, it had to be done. One second with a counter sunk bit will do this as this is nasty, cheap ABS plastic. Here they are assembled. Only mods to the chassis is that I enlarged the two holes there are on each side (cable entry and a port on top) to 5mm so the strain relief would fit and the solid plastic plug I glued into where the port is. The cable is the 6 core silicone wire that can be found everywhere now with a 3D printed Y-split and Stax plug made from an XLR plug and pins. Now for the sound... lets just call it work in progress. This is very much the first draft and one channel is slightly weaker than the other (I swapped out the diaphragm for another which fixed it mostly) so I need to look into that. I'll probably just build a second pair of drivers so I can match them into pairs as I have another set of the headphones. Massive baffle leak too and the housing... has issues... so bass is not their strong suit for now. That needs to be fixed but I might have to get creative with that. Still for a cheap project that took only a few hours to make and cost less than 150$ all in... there are worse ways to spend an afternoon.