All Activity

@swt61 those are definitely router bit cut

Sorry Doug. I thought we were talking about the OMA Monitor. Those dovetails on the amp certainly do appear hand cut.

The Mucky Duck....#WINNING! I haven't been in soooo long. We got to see The English Beat (label in the U.S.) with General Public at the Bayou Music Center last weekend. I have to say Dave Wakeling is still jamming well. The two bands put on a great show IMHO. Adam Ant....well, let's just say he has a good band. The percussion section was impressive. HS

There's a lot of equipment I think is so grossly overpriced it's ridiculous; on principal even if I had the $ I likely wouldn't purchase many things. I've found that I can enjoy simpler things, and my main basement system is kind of my "local" dream. I say local because it's right for my musical tastes, in my home/listening room. For me, my ultimate dream system can be perhaps 50% the room and its comfort....

Not sure about that; those pins are pretty narrow. It's possible they used a thin kerf table saw blade, but the narrowness and inconsistency looks like a hand saw to me.

Well, those dovetails are machine made, so no real expertise needed.

For me, Stax simply lack focus and I'm not sure how much that is due to the new higher ups or Edifer. I certainly don't agree with the design decisions of the 009, X9000, Lx00 lineup and some just don't make any sense. They are clearly pushing boundaries in some ways with more advanced drivers but major steps backwards with basic stuff like earpad quality. It's not ok that earpads for the L500Mk2 last for a couple of years before they fall apart. Some of the products were just arguably crap, the D50 was so bad it was never sold in Japan. The D10Mk1 was utter trash and I just got a D10Mk2... it's improved in some ways but it still sounds terrible. The SRM-400S is a "what the fuck were they thinking" product and on the whole, they just took the original circuits and doubled the price.

There is a podcast called The Julia La Roche Show. It's basically a series of interviews dealing with macroeconomic and market issues. The host is not particularly good as an interviewer, but that turns out to be more feature than bug as she tends to have smart people on her show and she just lets them talk. Anyway, this is not a recommendation for the podcast in general as there are better ones on the same topic. However, one recent interview is worth a listen. It's with Scott Galloway (a B-school professor at NYU). I don't think he is right about everything, or really anything in particular, so this isn't an endorsement of his views, but I think what he has to say is interesting and worth listening to. The first few minutes are pretty banal middle class investment stuff, but it gets more interesting.

MINAxRaon: Queen Fox Bass Remix Yuki D_Drive: Out of Swan Lake

@ang728, at first I thought your picture of the blown SiC was one of my photos! Pretty much exactly the same pattern. See below. Hoping the Cree I am now using will fare better.

Anthony Garcia & Los Diablos Tejanos: Apparitions Live at the Mucky Duck (Houston)

"Our goal is to develop something even better than the SR-X9000" - quite sure that is achievable... But nevertheless, my eyebrows are lifting up Had he said a different model though, I would have spilled my drink for sure.

had similar experience before.I feel like the ROHM parts are prone to blow up when the inrush current is too much and it's not my first time. Recently I built a BH earlier with accidentally installed one wrong resistor on one channel causing it drawing too much current,showing -V is constantly pulled low. at first I thought maybe the neg rail is oscillating (I was using Microchip SiC on this build) so I swapped back to ROHM SiC thinking that should work fine since I use it alot during the time that Cree part is constantly out of stock.then it blew up as HV kicked-in and almost shot my face :( .pics related https://imgur.com/z5IHdpx I fixed the issue after doing a full check on both amp, psu side and swapped the blown / incorrect parts . as i said , it's not my first time had the ROHM parts blown, although the root causes are different but they did easier to blow up when something is wrong.

I, for one, welcome whatever input you have Doug. None of my sense of self is tied up in my appreciation for those speakers. I think part of the appeal is the dovetails, and that's more your area of expertise than mine.,

The Blue Hawaii lives! Got my shipment of Cree C2M1000's and replaced the 4 parts that appeared bad. Turns out the BC557B was not bad. I had just tested it incorrectly. So just the c2m1000, the 24V diode, and the 2N3904. My guess is that the alternate part I used for the C2m1000 was not quite up to the task and the inrush current of the startup finally killed it. I will probably replace the positive PSU's chip as well since I got 5 of the C2M1000's for future repairs as needed. I had not adjusted the balance of the amp since I first built it, and decided to check the voltages. After 30 minutes warm up, balance and offset are still +/- 1V. Impressive given the number of hours I have put on that amp over the past 3 years.

I started responding and thought better of it. I don't find commercial audio gear very interesting, but I don't need to rain on anyone else's parade.

^?

.

I wonder how the OMA speaker would sound, because it appears that they enclosed the AMT unit. And I thought some of it's magic was due to it's dipole design.

mwl168, great to hear from you! It blew just as the HV power delay relay clicked on (I have a 45 second delay after LV and filaments turn on before HV turns on). So probably an inrush current issue if there was no short.

https://drive.google.com/drive/folders/1HO8e85DwrvA_BJq_Fck4j_iqTMR2odbc?usp=sharing

When my brothers and I bought a system back in the '70s, the AMT-1s were the runner up in the speaker department, losing out to the Infinity Monitor speakers with the Walsh tweeter. Probably mostly due to bass response. Nothing else that we were able to listen to made the list. Of course that was in Iowa and our resources were limited. Interesting that Nelson Pass worked for ESS, as did his wife.

I really want to hear those OMA monitors as well, and for good reason... In the mid 80's I bought a pair of ESS AMT 1D speakers. Those speakers had the Heil Air Motion Transformer tweeter/midrange units. They are the best top end/midrange I've yet heard. The issue was the bass. It was a bit wooly and loose. I've always wanted someone to design a speaker using those AMTs, but with a better low end.