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Kerry

High Rollers
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Everything posted by Kerry

  1. So I've been having some fun with this design. I've gone ahead and shrunk this thing way down. Each channel is 2" x 4.5". I've used some really small SMD parts so not for the faint of heart. Here's the boards: If you look at the bottom of the board (left center: R4 - U1) I've designed a servo based on the T2 style with an a twist since it needed to push/pull in the opposite direction. Q1 & Q5 are really small. Very proud I could solder them. Here's some shots of the amp up and running. The PS is in the style of the KGSShv PS. It was an early prototype. I've got it set to +/-400V. I added a +/-15V with the transformer mounted to it. Nice and small and allowed me to use the Antek stock transformer. The servo starts the amp at +3V and within 5 minutes has it down to less than 0.1V (see above). It stays nice and tight within about 0.02V once it settles. I've had it on the scope. Very flat response from 10 - 70KHz (which is all I bothered measuring). I had a chance to listen to the one channel. So far so good. Dead quiet and the sound seems to be there. Need the other channel to really tell. All in all I'm very happy. No explosions and it does what I wanted. I'm going to try to build this into a 7" x 12" x 2" chassis. We'll see.
  2. Hi Les, Since the boards are all digital control, you could use one digital encoder with a momentary push switch. You could then program it to be a balance / volume control. If you wanted to use traditional pots you could, but would need to interpret the resistance and convert that to a digital value. This is easy enough with an Arduino board. Regards, Kerry
  3. I have a few extra boards. PM me.
  4. I'm loving so much about this build. You've really nailed it Congrats!
  5. Amen. Looking good
  6. Nice
  7. Very glad to hear that.
  8. Totally interested Can't wait to see what you come up with. I'm thinking of this for an office rig. I'm wondering how well it would drive O2's.
  9. Looks good looking forward to seeing the final result.
  10. Those builds look great. I love that you have access to metalworking shops. For me it is all sourced or made myself. Fun, but not easy - especially for the finishes.
  11. I'm loving the way that build is turning out Are you still sending the artwork out to have it etched? I'm looking for a DIY way to label my projects and was wondering if you've mastered that.
  12. Great news on both the board and transformer.
  13. Beautiful job. I like that it is a stock chassis. This really reduces build time.
  14. I'd be interested in some of the sk216 and sj79 parts.
  15. Happy Holidays & Merry Christmas
  16. That's awesome. Great find
  17. Nicely done. Thanks for the pics.
  18. Congrats Emooze I really do like listening to this amp. It has made its way to my night table. @Spritzer - That looks so much better than I had imagined. It's like Christmas a bit early
  19. I definitely need to pick up this project as soon as I clear plate. Enjoy the A/B session.
  20. yeah, I saw Tom at the NY meet after this happened. He wasn't happy. Glad you could fix it for him. He's a good guy.
  21. @emooze - Looking good. @spritzer - that looks like a whole mess of fun.
  22. Congrats on a nice build Victor. I thought your impressions were well stated. If you have a chance to invite some friends with Audeze's LCD-3 or the HD800's I'd like to get your feedback with those two as well.
  23. Beautiful builds Ume. Congrats and enjoy
  24. I agree, nice work and love the case. Congrats!
  25. Couldn't agree more
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