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Showing content with the highest reputation on 08/15/2017 in all areas

  1. On a lighter and less important note: Yesterday I put back together a door frame that had been ripped apart when a visitor of ours tried to close a screen door that was locked open. The day before that I managed to fix the CD drawer on my Linn Classik that has been broken for years. All it was was a simple loose rubber belt internal to the mechanism. Some belt conditioner fixed it right up. Very glad because it seemed to be a custom transport. Yay for working beloved electronics and saving money.
    5 points
  2. @cetoole was visiting, so we made a slightly absurd amp using parts from the bin. I had originally milled the chassis with the intention of building a 6E5P triode -> 4P1L triode SE; then realized that would be a bit awkward, since the 6E5P is rated for higher dissipation than the 4P1L. I may have also forgotten that 4P1L filaments need power supplies when I bought my power transformer, too, so that was a non-starter. Not wanting to leave two unused holes in the panel, the obvious solution was to throw some 0C3s in. Glow tubes are pretty; it follows that any amp that uses them will sound better than one that does not. A normal person might be tempted to string them in series and use them as a reference for a regulator. Instead, each channel gets its own shunt regulator with a voltage reference made up of a zener stacked on top of the glow tube, and a SiC shunt device. R7 ensures that the tube strikes. And the current source (which is nothing inspired) The regulator terminates into the cathode rather than ground, keeping the cathode regulator out of the output current loop. It also forces the PNP to run at constant current regardless of cathode current, meaning its impedance will also be constant. It sounds like a single ended triode (i.e. terrible). But it was an awfully fun build. Slightly tempted to parafeed or otherwise upgrade the iron. It's surprisingly silent when nothing is playing.
    4 points
  3. Hiss is not due to an impedance mismatch per se. It is caused by current moving through electronic parts, and it can be exacerbated by having too much gain which amplifies it. The reason one might see it more with low impedance headphones is that they are often louder for a given voltage. https://en.wikipedia.org/wiki/Johnson–Nyquist_noise https://en.wikipedia.org/wiki/Shot_noise
    3 points
  4. ^ Hey dickweed, it's people like you that are puttin' people like me outa business! Put down the hammer, put down the screwdriver and leave that to the professionals! P.S. Nate's deck is outa square. I can see it from the pictures!
    3 points
  5. PS: That's a solid slate baffle. It's called aptly "Monitor". I can't find a price but if I ever win the lottery...
    2 points
  6. This love child is very cool looking in person and is the best speaker system I have ever heard anywhere.
    2 points
  7. Looks a bit like a Workmate mated with a bandsaw, and this was the result A speaker to give you nightmares - give me a kiss right on my midrange horn And how would you explain a pair of these to your partner...
    2 points
  8. I'd love to hear those! The OMA slate is beautiful stuff in person.
    1 point
  9. I like the industrial look. It's true to form, and I believe that a more stylized carriage would only detract from the beauty of the wooden horns. And that is where the beauty lies IMO. I think there are better looking versions though... Personally, I'd choose Cherry wood with the Black frame. And it looks like OMA has a new speaker! Want! Without research, it looks like a Heill AMT with a 12" woofer. Having owned the ESS AMT 1D's, I can attest to how good that combo can be. EDIT: Indeed it is a Heill AMT unit and 12" woofer. However, it is not an NOS AMT, but rather a new unit, built for OMA in Germany. Nice!
    1 point
  10. Interesting linear profile - turns out that the radiation pattern for a (infinte) linear horn is exactly the same as a pulsating sphere. I actually had to look that up, because I'd never heard of a linear profile horn before https://www.grc.com/acoustics/an-introduction-to-horn-theory.pdf And sorry but it still looks like a workmate screwed onto a pallet, with a few bits and bobs welded on, whatever it sounds like.
    1 point
  11. My contribution to the pissing contest : Ali
    1 point
  12. This is actually a profound strategy for finding contentment in many areas! Sorry about the watch though.
    1 point
  13. No clue about OP's specific headphones, but I have definitely found that a lot of amps hiss with high-sensitivity low-impedance loads. I test with a JH13. In the inexpensive range, consider an Emotiva Big or Little Ego. Not dead silent, but close and much better than the original DragonFly (no idea about newer versions). Also an O2+ODAC, though they are often built with way too much gain, which may make problems of its own. The best performing devices, with zero hiss audible to me with sensitive IEMs, in my experience have been Apple iPhones and iPads, and the new Soekris dac1541 (though the latter doesn't quite kill all sound at minimum volume; it's not a big deal though).
    1 point
  14. Never a fan of iTunes.I bought Pure Music early on. Tried the Amarra (meh) and Audirvana early demos. Was questionable if I heard a real improvement between them, but was not using STAX with Gilmore amps at that time. I ended up buying Audirvana and kept it. It's been massively updated with options over the last several years, and the SQ has improved too. Just now comparing to Pure Music, the latest Audirvana is quite a bit more transparent, resolving and clear. It shines with the Yggdrasil Gen 5 upgrade, IMO. You might consider trying the free Audirvana demo: https://audirvana.com/?page_id=3397 Later if you like Audirvana, there is really slick iPhone app for remote control: https://audirvana.com/?page_id=3620 I use it to run my Mac mini headless. Its really nice to use.
    1 point
  15. Condolence Kerry to you & your family.
    1 point
  16. Condolences to you and your wife and whole family, Kerry.
    1 point
  17. My condolences to you and your family Kerry.
    1 point
  18. John testing. And 10 different takes of Giant Steps from the heavyweight champion boxed set.
    1 point
  19. Sorry for your loss Kerry, and all of the above. Losing a parent or in-law parent is tough. And Jacob, just saw this about the job today. Sorry, you can only control what you can control... I would agree that is sounds like they already had a decision and were going thru the motions in interviewing others. Hang in there. Sent from my iPhone using Tapatalk
    1 point
  20. That is just all kinds of cool!
    1 point
  21. A day later, rough framing complete.
    1 point
  22. I found the perfect ride for @grawk
    1 point
  23. That would be an awesome speaker for your Eyes Wide Shut style cult fuck-mansion, for the days when the pianist can't make it, or whatever.
    1 point
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