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VDS

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Everything posted by VDS

  1. Noise continues when preamp to Xilica cable is disconnected.
  2. I assume the cable is XLR at one end and RCA at the other (IOW, no additional connectors added to an otherwise three wire cable). This probably is not the problem, but have you measured whether the pin 1 and pin 3 on the XLR side side of the cable are electrically tied together ? yes, no additional adapters attached to cables. checking pin 1 and 3, with a ohm meter?
  3. No isolator, would certainly be willing to try one. RTA is a little confusing, many options i dont understand in control pop up window, did set to 1/48th smoothing though
  4. But that make sense right, your literally creating a gap in signal chain, or am i off base? Wondering if the connection to the high frequency amp causes problem, or just doesnt allow problem to get to the speakers?
  5. AHHA, Finally found something. When i unplug interconnects from Pass Amp noise stops! Pass is single ended only, no XLR Always audible, except when i turn Xilica off and leave everything else on. Both compression drivers, (2 way speakers) All equipment plugged into power strip. Tripp Lite. isobar ultra No dimmers in the house All interconnects 3' - 6' All power cables are standard 3 prong audio, except bluesound Node 2i, ungrounded 2 prong Pass xa25 highs, Crown K1 woofers, Aric Audio Motherload pre 6SN7 Separated all power cables from signal cables Nothing else electical in room turned on, lamps, tv, Tried to match pitch with tone generator on phone, probably 6000-10,000hz
  6. The sound is similar to how your ears ring after being around very load noise for too long.
  7. Separated all power cables from signal cables, no change.
  8. Trying to describe sound is always difficult. Its a very high pitched, over 15,000hz?, piercing sound. not loud, but audible between songs. The high pitch is really is unpleasant on the ears. it does not change volume when raising volume, or preamp gain. if i turn off xilica it stops,
  9. I do have xlr to rca for preamp our to Xilica in, and xlr to rca from Xilica to high frequency amp. These are inexpensive cables, I could look for higher quality xlr to rca cables?
  10. Chris, I did measure and made some adjustments, I’ve got all 100-15,000hz levels to within 6dB from peaks to valleys , after 15,000hz it rolls off. “Hum” Is very high frequency.
  11. Hi, set up new speakers, everything good. Moved them to new location in house, (started in studio in separate building on property), same equipment and now I’ve got a persistent very high pitched whistle, whine, ear piecing frequency. Not very loud, but clearly audible, sure I would have heard it in previous location, heard as soon as I got system up and running in new location. Seems to be coming from the Xilica 4080xp, stops when I turn Xilica off. Anybody with Xilica or other DSP experience this? Could it be grounding at this high pitch? Subtly different electrical supply in home vs studio? many ideas on how to troubleshoot this? thanks for any perspective, Ted
  12. Back to capacitors. I recently bought and 10 yr old diy class A amp. I noticed it ran REALLY hot, not class A hot, but HOT. I drilled about a dozen 1” holes in top which had helped a lot. Any way to know if the power supply caps where prematurely degraded by the high heat environment? The skins seem to have shrunk and a very slight bulging might be seen? It sounds pretty good, but, as always, can I change something and make it better? @Deang or others have perspective on this? thanks! Ted
  13. Basic question. In spectagram is the blue/green “fluff or clouds” on the right side reflected sound that the room is adding? Do we have want to see the colors taper quickly as they move to the right?
  14. Here's what I got. No idea how to read spectogram, I am researching to understand the data the spectogram gives.
  15. I should have said, using Dayton audio Umik 6 mic, I think I applied the correct calibration file (that was confusing, I’ll have to double check). Mic was 1 meter from front of speaker, level, (horizontal) pointing at point between woofer and mid horn. Like I said I was applied Var smoothing which showed a 10 dB range over the entire frequency range, of course fell of cliff at 38 hz.
  16. I should say I applied the Var smoothing, as that was a recommendation for novice users.
  17. Hi, learning to use REW now that my MEH 402’ are built. Testing my modified Cornwall 1’s and got 35-20,000hz all peaks and valleys within a 10 dB range. Is this “generally” all you can hope for with passive crossovers? I don’t really know where to go from here. Any advice on other things to check next? waterfall plot to check room reflections? I’m just trying to learn the basics so I can start to “see” what I’m hearing. thanks, Ted
  18. I used the BSM 4592 mid with Dave Harris Horn, love it. I had a pair of DCM 50’s which are great, but to me the 4592’s are a little smoother and less “edgy”
  19. https://www.facebook.com/groups/528704021054561/permalink/847807369144223/ very vintage KHorns. Not mine.
  20. Cory and Steven at Paducah Klipsch. They were back ordered from Klipsch, but I only waited 2 weeks. I also found a cinema supply place that also sells them retail, (can’t remember the name).
  21. I’m putting faith in the same people that said 402’s sound great. Let’s hope the MEH reports are accurate ....I have faith they are
  22. My fiancé thought the Cornwalls were big, lucking she’s pretty accepting. I made dinner for her just to help smooth the transition. Knowing the dimensions doesn’t really prepare you for how big these are inside your home!
  23. I hope it doesn’t seem like I’m showing off. I feel kind of vain with this post. I just want to give a little more info to people contemplating the purchase of 402’s.
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