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kevin gilmore

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Everything posted by kevin gilmore

  1. 4 pin, ABSOLUTELY NOT you put a 5 pin on the amplifier output. and then a 5 pin to 4 pin tail for balanced, and a 5 pin to 3 pin for se.
  2. its fine for digital, just seems a bit of overkill when a standard 3 terminal regulator is enough. definitely change d4 to 5.1v 4.7v is too low and it will not start.
  3. never tried it that way. a little over the top to use this to power digital. does look like it will work.
  4. actually if its that old, your electrolytics are starting to die...
  5. i soldered the filament wires directly to the jacks.
  6. mu metal is even better
  7. 25 watts per channel pure class A is just barely enough to run headphones but more than enough to run a pair of klipshorns (to ear shattering levels)
  8. machine on different subnet now, all should be fine.
  9. ok, the thing before the craptor then.
  10. birgir needs to post public pictures of his new house. I would kill for a view like that. (and free heat)
  11. Hawaii, north of vegas, something like that. had enough of illinois budget woes, as in not plowing the streets in the winter more than every other day. The trick is making a 24 bit dac that actually meets the specs that some people out there quote. The rest is pretty easy. And the data i/o is heading to the recycler today. found a fool to take the metler as an antique show piece.
  12. not that long
  13. this is going to take quite a while!
  14. and this is why I try to design for the lowest dropout voltage possible. Especially true on the high voltage supplies. But still you have to have enough to work with at least 5% low line voltage. so you need a different transformer.
  15. not a good idea to do that to the diaphram
  16. so with any fully dc coupled circuit, if you put a balanced signal on both inputs say -1 volt, the output of both drivers will go to -VCC (400,450...) resulting in a dc bias on the headphones of 1kv early srm717's had a protect circuit for this, but it did not work as the relays ended up arcing thru.
  17. Current output. Even a short to ground won't damage the amp, but will throw the servo off.
  18. these http://www.mouser.com/ProductDetail/Phoenix-Contact/1725711/?qs=%2fha2pyFadug5do2T4X2cVkQMjmkHXvU%252bnHalaIBCVes%3d 7 and 8 pin for the input/output and 5 pin for the control or any like thing with .1 inch spacing
  19. I hate it when that happens. fixed
  20. i think i have a bare board, will look later
  21. it better say 2k on both sides, but it might look like 5k flipped yet it sets the gain
  22. so i'm not sure that is what you want because then the minus supply is completely unregulated which is the problem when you try to split the ground with only one regulated power supply. in effect it shorts out the 2 x 365k resistors. http://gilmore.chem.northwestern.edu/srxshunt3.zip has a position to short the unreg ground and regulated ground.
  23. you don't want the tube sockets all the way in otherwise they are too low for the chassis.
  24. pretty sure the goldenreference.pdf is the latest version
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