spritzer
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Everything posted by spritzer
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Woot, comparisons against T-50v1 FTW!!!!!
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1k-2k$ for the chassis isn't a bad deal but we simply have to make it in that gun metal gray. I will continue to search.
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It is intended as a partner amp for the SR-404LE but they always do that with the stat's EH still makes them so that shouldn't be an issue. The ECC99 is a much better tube for the job though...
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Happy birthday!!!
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They are the same and WPI is indeed using the old Amphenol tooling
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We really need some BH vs. WES comparisons.
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Didn't ML use that stuff for the updated versions of their gear? You will get a full report.
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The HE90 driver is quite big but according to the pics from Senn, the diaphragm isn't that big. I did measure the drivers once but can't for the life of me find the measurements... The Jecklin drivers are bigger at roughly 100mm square. His unit had all the usual issues, a single filament supply, outputs at 100v and iffy build quality but far from the worst I've seen. As for buying an ES-1, are you nuts!!!!??!!?? ... The T2 and KGBH would both be excellent matches and I preferred my old BH with the Omega over the 007 (which liked moar powahh!!!). Never got a chance to try the hybrid with it though...
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They are certainly in my Top5 and yes, the driver is 90mm across. Here is what it looks like on the inside:
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200$ per PCB is certainly not out of the question. 100+$ for basic stuff from China... I'd really like a black solder mask with gold immersion and 4oz copper to go with the 24 leds per channel. Perhaps a different material then FR4 too since this is a crazy-go-nuts project after all.
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That set has the stock drivers.
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It's not like we are running a fancy headphoneampcomanythingy... Just got the first quote... these boards aren't going to be cheap.
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We've been sourcing parts all day long and I'm going to send out for some quotes on the PCB's later tonight. We are definitely moving forward...
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I'm fine with it.
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Now you make me want to find yet another SR-Omega. I do need to find a broken set to see what makes them fail...
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86-71-6S is actually the male plug but the picture on the Allied site shows the back of it. You stick the wires through the plug to solder them.
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There were close to 250 units made but exact numbers are hard to come by. The prices varied quite a bit in those days since Stax changed dealers in the US quite often just before they went bust. A few of these sold for 6500$ with a SR-Omega back in 1995. In the more stable markets in Europe it cost 7000€ and with a SR-Omega it sold for 9000€. The Japanese prices are even more stable since there has been next to no inflation there in 15 years, a SR-Omega MSRP was 180kYen and the SRM-T2 was 468KYen. The SR-007 Mk2 is the first price increase of and Omega set since 1993. Stax know that we have the schematic and would like us to keep it under wraps so that's how it will be. They are fine with a couple of DIY amps though.
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The heater current does appear to be the same so why not give it a try. Just measure the transformer temp to see if anything strange is going on. I do think that 6S4A's are the best option since they can take 500V easily...
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Ditto on all accounts.
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It just shipped from the US yesterday so I haven't even seen it yet. The SR-Omega is long gone and I just have a Mk1 007 here. I should have had a Mk2 arriving soon but it was damaged prior to shipping so I will get one later on.
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We might just take you up on that...
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They are mostly detailed shots of the underside of the PCB. Certainly not the schematic which will not be released. I haven't gotten the amp yet but given the low level hum Kevin was hearing I'm guessing the high current AC filaments were just grouped in with the other power lines without any shielding.
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I bet everybody knew this was coming but we've been moving fast and the board is taking shape. If it's not clear from the photo then this is a massive slab, 16" x 12", so quite a bit bigger then the production version. It will be built like the BHSE with the board mounted to the top of the chassis, with the tubes sticking out of the top and the components on the bottom. Massive heatsinks are needed to keep this beast cool and a single angle bracket is used on each side of the board to connect all the parts together and make assembly just a bit easier. To honor the Stax legacy the following will be printed on the board: "With the utmost respect and admiration for Dr. Takeshi Hayashi, a living legend". For those who don't know, Dr. Hayashi is the designer of the T2 and also the son of the Stax founder. Without his great vision and talents we wouldn't have the quality of phones/amps we have today. We will keep you updated as the project moves forward.
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I thought the King of all headphone amps would deserve his own thread. This is a beast of epic proportions, 11 power supplies, an overload of CCS and it draws close to 300W from the wall. I'll be updating this post later on with more specs about this monster. Well, here are some pics for your viewing pleasure. They are huge so may take a while to load.
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Do something more hardcore, a single 9pin plug to two 9 pin sockets with an external filament tap so that you can use 6S4A's in the T1.
