All Activity

RIP Todd Snider, the situation surrounding his death is a bit murky and pretty awful. He was ill and had been violently assaulted recently.

Yeah, I don't know if I could even pick just 5...still...so I guess I haven't changed much, but my old top 5 are no longer my top 5, so I'll give it a shot: 1 & 2: Animals and Wish You Were Here still, but I don't listen to them much, even though I have the WYWH Immersion box and Animals remaster with me, they're both unopened. So they might still be my favourites? I do still love jazz (Keith Jarrett's solo piano concerts, like the Sun Bear box; Return to Forever/Chick Corea/Al Di Meola; et al), but the new number one in that category has become: 3: Hiromi's Sonicbloom, Time Control -- it still has to be part of her Sonicbloom group. I mean, I love all her stuff, but her work with David Fiuczynski and the others was just peak. Shoutout to Greg Howard (RIP) for the single most electrifying solo instrument performance, Water on the Moon. 4: I do still love prog, but my tastes have mellowed so I'd have to go with Porcupine Tree's The Sky Moves Sideways. 5: I do still love what I used to call e-metal, but the public seem to have settled on calling it "electro-rock" (Curve, Garbage, Stabbing Westward, Placebo, Muse, Kardi, et al), but this is an easy one, as I still listen to all of their albums regularly, so pick any: Al1ce, The End of the Beginning, The Thirteenth Hour, As Above So Below Plus, it's also Post-punk! 6: My love for all the various incarnations of synthesizer-based music (from "Kosmische Musik" to synth-pop to ambient) isn't well represented here, as is neither all the centuries' worth of "classical" music or "instrumentalism" (Jean-Michel Jarre, Mike Oldfield, Vangelis, et al), so... Isao Tomita, The Planets

Do you mean Phenomenon amplifiers?) I saw what was inside and it seemed funny)) Well, if I turn the volume up to maximum, the amplifier can consume up to 10 mA at peaks, but I don’t listen that loud. I dont know if its minited to +-400v or maybe it can handle more.

so my version has an amplifier power of around 20 watts. the hvrv version seems to be half of that. may be the reason why there were a couple of comments about the sound vs the original to126 version.

We have tickets to Wynton tonight...going with some friends. Looking forward to it. HS

those modules do work, i have a few. the diodes on the back run stupid hot. never tested for hours and hours. there was a company in poland i think building an electrostatic amp with 4 of these. first version with no fans. second version with fans. both versions burn up in a couple of months.

Yes, you're right. That's why I had to connect it like this. I'll get this thing tomorrow 12v to +-390v DC DC I hope it doesn't beep or at least there's a way to eliminate the beeping with an RC filter or something. I'm just trying to try all the DC-DC modules before spending $50+ on those cool USA12400S-8 ones. But most likely, I'll just have to buy them.

the dexu parts are providing the isolation. this works. extra parts, maybe the same performance.

It's been working reliably for an about hour now.I will continue testing 24\7. The power consumption of the modules themselves from the 12V power supply is 550 mA under load. The power consumption of the amplifier itself from these modules at +-400 V is only 5.5 mA.

Could very well be but the MLER points specifically to the stators, multi layer electrode rigid, if I remember correctly.

i use 4 of this one https://www.lcsc.com/product-detail/C5279972.html DEXU Electronics B1212LS-1WR3 it's something like galvanic isolation

those are not isolated. at least they sure look non isolated. how you put them in series with common power supply input.

https://www.ebay.com/itm/275736642694 its max MAX1771 12v to 150-220v DC it can be ajusted i set 200v and just connected it 200+200 for +400 and 200+200 for -400 I read a similar problem about noise here but I couldn't find a solution. Well, unfortunately, I don't have a thermometer or pyrometer, but it feels like it's probably about 45 degrees Celsius or so - maybe more/less, It dissipates pretty well.

links for those power modules please. how warm does the chassis heatsink get? edit: what is the total power input that runs the switchers?

Hi Kevin. Thanks for your reply. The boards are sandwiched together with a thermally conductive material and a bunch of thermal paste between the housings. I couldn't figure out an easy way to get inside without breaking everything. I'm hoping the problem is still in the power supply, since you're right—it was heating up. The diodes were burning out frequently, then the transistor itself, and then possibly the transformer itself—its resistance is now 0.1 ohms on the primary winding and 4 ohms on both secondaries. I'm not sure if that's normal. It's been working without any problems on a third-party power supply for half an hour now. I'll continue testing. I couldn't think of anything simpler or better than connecting 4 of these modules to get +-400v To my surprise, these modules produce even more than 10mA and +-400v But they have one major drawback: noise. The throttles in them make noise.

the power supply shown is definitely a flyback single ended switcher. which means the 2 rectifier diodes see twice the power than a push pull switcher would generate. which means its going to get hot. diodes need to be increased in power handling. would like to see a real picture of the amp board in as high resolution as possible.

I guess it should be max 10mA. These bricks output max 20mA. If we take only the right or left half, the upper amp (+) draws 10mA, that are "vacuumed" by the lower PS (-400V). Then add other 10mA for the lower part, and you're at max acceptable draw. I'm testing with the 10k pot, until now it drew really more than 10mA, so the PS started "pulsing" under my dim bulb tester. I'll keep you updated.

Thanks for your message. Then I'll try building a cheap power supply with 4 DC-DC converters (i have some for 200V) and test its stability when running 24/7. And only if it runs 24/7 will I order those power supplies. They're quite expensive at $25 each, and i need two of them, which means $50 plus bias.

And so, yes it is, quite unstable due to drifting. Problem is not the PS, it's that the current draw grows slowly with time, then it begins pulsating, then flames or short. I'm now assembling the stabilized version with dn2540 and pot, so that you can dial in the desired current, yet I'm having some issues with that, but as said, I started this morning (and now it's early afternoon). Who sold this unit made the error of "marketing" it too early, perhaps not testing nor listening at it. Here it's all about patience, testing, doing it better and listening. So probably a new PS will not solve the issue.

Sorry if I posted this in the wrong thread. But it seems like this is also a clone of this amplifier. You're talking about the amplifier board itself overheating, right? That is, the resistors on it are drifting and therefore i need to be replaced with ones with greater thermal stability... This is where the power supply failed, and I've already ordered the DC-DC converter that Kevin recommended. I hope everything works reliably after installing them. I initially thought that the problem with this thing was in the power supply, but now I realized that it’s not that simple...

Yes, but they say in the ad that the sound is different. Maybe the membrane is different? The 007 mk1 and mk2 are almost identical in appearance. But the sound is very different. Maybe it's the same story here.

Yes, they're quiet to my ears. No noticeable noise in the cans. In the main thread, Dr. measured "ringing" at I don't know how many MHz. If you can find them, go for them. The supplier that I bought from, has them out of stock now. And yes, the difference is the input voltage. Yes, thanks, I'll see some video on YouTube and I'll become a pro! 😁

Now I understand the 6th floor joke elsewhere

I'm calling BS on it being any different, at least from the pics I've seen so far. The housing clearly is but that has minimal effect on the sound.

I'm more interested in the difference between the MLER 3 and the MLER2, since the stator shape, judging by the photo, is the same.