Milosz

I had some interaction with Dr. Gilmore a few years back discussing what kind of tests to perform on a DIY T2 that I had started, 7 years ago was it? Don't recall. Thanks for giving the info on methods to test electrostatic amps, I'll post those on Audio Science Review there are actually people there curious about this, and yes I know Amir (the main guy) has a hard time thinking beyond his accepted paradigm of using a klippel robot to test speakers (doesn't work with Magneplanars but he can't see that) and testing amplifiers into load resistors. However he's not the only one on the site with an interest in testing things, and there isn't much info out there about PROPER testing of amps for electrostatics. I would LOVE to see some actual published test results on the "better" designs you have come up with as compared to the venerable Stax amps, but I can't find any such. I would have thought that Spritzer's Mjolnir Audio site would have published some test results, but I haven't found any.

I wrote an email to you using [email protected]

Hi all. I've been trying to find measurements of electrostatic amplifiers - other sites typically don't know how to measure them- so looking for HD & IM distortion measurements, max voltage swing, SINAD, and also maybe slew rate. I've spent some time looking around on this site but haven't stumbled across any yet... if someone could point me to a page here or maybe a site like Mjolnir or some other place that might list some measurements. I just want to see what's considered good for electrostatic amps.... Thanks!

Have a buyer. Thanks everyone for your interest and consideration.

In 2011 I bought everything needed for a D.I.Y. T2 ( except the chassis and the 4-gang attenuator or pot for level control) and had every intention of building the thing... but then I became disabled and unable to build it.... though I still fantasized that I would build it- somehow. Well, that clearly is never going to happen, and due to the situation I find myself in, I need to get the money back that I spent on these parts. I offered them to Birgir (Spritzer) but he doesn't need them; he suggested I offer them here. I have attached my T2 Bill of Materials with part numbers, prices and etc. Have a look and if you are interested, make an offer. FYI I will only sell this as a lot. All transistors obtained from sources other than Mouser/Digikey/Allied have been characterised ( breakdown voltage and curves measured ) to make sure there are no fakes. t2parts-milosz.xls

--NEVER MIND (but thanks if you intended to post!) I FOUND THE SCHEMATICS.- Sorry for being lazy.... can someone please post a link to the DIY T2 schematic (amp & power supply) I had them but lost them due to a bonehead / senile dementia disk mirroring error, and my searches for them have only yielded links to dead locations at Northwestern Univ. I suppose I could spend the time and read through every post in this topic, I'm sure they are here, but as I am old I fear I may expire before getting through all 185 pages of posts... t2schem-b.pdf t2schempower.pdf

Thanks for the info. I had seen the Chinese PCB's and the Chinese pre-built boards on eBay. I am leery of going that route, not because I worry about quality but because there's something that seems - well, at the very least impolite- about someone selling Dr. Gilmore's designs commercially or even semi-commercially, without his permission and likely not compensating him in any way. Bad karma, probably. If I accumulate any more bad karma, it's likely that the rest of my hair will fall out or something even worse will fall off.... IN ANY EVENT, I found someone on Head-Fi who had acquired a complete set of parts for a balanced Dynahi a few years back, and he was offering to sell them at his cost. He never got around to building the amp, and just wanted his expenditure back. So I just now bought that. It includes all the matched transistors and etc. That's really great because hunting down parts is not my favorite part of building stuff, my favorite part is the craft aspect of assembly, and especially designing and crafting good looking casework. But like I said, thanks for the reply.

In the last 20 minutes I got the bug to build a Dynahi.... I admit I am confused about various versions / names of versions - some versions balanced , some symmetry-balanced, some using THAT340, older ones not, some with currently-available parts, original board based on old parts, etc..... First off: Did you end up with any extra dynahi boards of any description? Seems unlikely.... but I thought I'd ask Second: Failing that you have any boards- does anyone have any idea where I could get a dynahi board? I guess I am most interested in building an unbalanced version, similar to the original dynahi... I've looked around and since the dynahi was an older project, boards seem pretty thin on the ground these days.

Here are several new knobs that were recently made for my stock, for use in various projects. Material: blue tiger-eye, labradorite, aventurine, agate. The aventurine one will be softly backlit as a pilot lamp. Opalized petrified wood knob under fabrication now....

I'll post the blue tigers eye knobs once they're done. The process takes about 2 months....

Red tiger eye knob (FYI not for T2) ...and a chunk of some nice blue tigers eye stone I just got, for to make more knobs....

I bought a board set from jdineshk ; the power supply board is labeled version 1.1, and the amp board is labeled version .21 Is there a BOM that I can use with these? A schematic that matched would be good, too..... I've looked through this thread (albeit not exhaustively) and can't find anything I'm confident is a match. Thanks.

I see so when Kevin mentioned "next board run" it was HIS board run- not a general run of boards that was being organized by someone.

...is there going to be a run of PCB's for Megatron?

Thanks for the info.