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spritzer

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spritzer last won the day on May 31 2020

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About spritzer

  • Birthday 07/05/1982

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    Reykjavik, Iceland
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    http://www.mjolnir-audio.com

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  • Location
    Reykjavik, Iceland

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  1. There has only ever been one MRI designed electrostatic that I know of, the Koss ESP900 which is just a 950 with a closed housing. I've heard that HE60's were used for this but never seen anything in the flesh, plus the HE60 headband is magnetic (plus the screws) so something had to be done about that. The MRI's I've been in all had sound pipes for the audio, simple tubes with the transducers elsewhere and sounded terrible. The Voce and the Hifiman units were indeed unfortunate. The Voce is well built but sounds like crap (electrostatics are all about that vague sound and loose, uncontrolled bass... ) plus that stupid case they insisted on shipping with them. Now the Hifiman Shangr-la jr. sounded good but that build quality and silly price makes it a solid miss.
  2. The PSU's are shared so that shouldn't be the issue but it can be anything, a marginal resistor, marginal transistor etc. etc.
  3. I should be getting one of these to try out soon and can't wait. It wasn't fun sitting out the press embargo... 😉 I would take those measurements with bags of salt given the amps used and the people doing the testing.
  4. I would definitely swap out the rectifiers, they are really a wear item on anything this old.
  5. Voltage divider off the B+ works just fine and hum can be pretty much anything so impossible to tell.
  6. Indeed, that's and excellent way to fix it. If the elastic has stretched too much the same can be done by opening up one side and shortening the elastic.
  7. This is very much the return of Singlehour, same utter incompetence and utter disregard for safety and the customer
  8. I'm not sure what those things are but they are sure as shit not Megatron's. Looks more like a SRX with some version of the Megatron output stage... This is why Kevin and I try to expose these fuckers as they are literally running away with peoples money. On a similar note, I have another amp from JR Audio here now and well... stay put for another horror story. That thing lasted for a few days before the PSU blew up... a sloppy clone of one of my old PSU's BTW.
  9. Stax just tripled the price of the 507 pads and the only other Lambda pads are the 207 pads so slim pickings out there. I've never tried the Vesper units but their other pads have been great.
  10. That is quite normal for these old sets and there can be a number of failure points, bad cable, corrosion inside the driver or the resistive coating on the diaphragm has started to break down.
  11. Normal 51K resistors would work just fine but I'd shoot for a non inductive unit such as the Vishay units Stax use now. They are 7W but that's even better
  12. Thanks for the update Todd! I've received dozens and dozens of emails from some very worried people so I'm glad it is back.
  13. I would place that as top tier stupidity
  14. No, not at all. The 500t is more similar to the 600ltd amp with presumably a bit lower rail voltages but still the same circuit as the T1. I have a 700t here and it is terrible in stock form, just awful. Utterly lifeless but adding a CCS really transforms the thing into something decent.
  15. No, not at all but they are very sensitive to static which is the most likely culprit
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