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skywave-rider

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  1. Clearly, I am right. I am not in a popularity contest and I don't sell stuff. So, yea, AK is a good place for measurements. You're rude to lay that stuff on me and in my thread. Lose the anger and move on.
  2. It's apparent that it was a bad idea to attempt to bring my measurements to this forum. I have no patience to wade through the personal vendetta stuff I see posted here, on a thread I started.
  3. I don't know what you guys are talking about. And I don't want to know. I've never had a problem on AK; far from it. Anyway, like I said, I will take the time to upload the original files here when I get back. Currently in Japan, heard Everest DD66000s and assorted vintage JBL, Altec, et. al. stuff so far.
  4. I see. I am out of town but will do that when I get back. Thanks!
  5. I made Crites Tweeter measurements, horizontal and vertical polar response, with .FRD attachment, here: and impedance, with .ZMA attachment, here:
  6. Probably. http://www.partsexpress.com/pe/pshowdetl.cfm?&Partnumber=290-659 Urei used bulbs as fuses; but I never had to change one. EDIT: Actually, if I remember correctly, the bulbs were only WARNING LIGHTS, standard fuses were in line, tweeter and woofer. Sorry. Can't find the manual.... BULBS! (fifth type)
  7. Wow, Mike. Did the crossover get that hot? Welcome to the old-world of tube amps. : ) The ear percieves so differently at different volume levels, that I think shifting values in attenuators are not significant; assuming they stabilize eventually. We're supposed to "work" a speaker at what, 85dBspl? 90? Too loud for me these days. At a certain echelon in pro sound, everything is active anyway. I know u guys know that. We're dealing with old world stuff here, but we like it. I also note u guys love arguing. [] I'm still catching up.... []
  8. Hey Dean, thanks again. Well I think this is your subtle way of saying "you just don't understand..." LOL Perhaps. I'll try moving the tap. The K-77 looks (as posted) and sounds, real hot. 3dB would sure help though. I'll post back with that. In the long run, a new crossover designed with a bandpass mid with crossover points selected to compliment horn directivity in the vertical and horizontal dimensions, (something else I'm learning about....), if possible, would be fun to try after I get better measuring abilities. And there are the other projects which never get done. The 2 way Econowave over at AK has to get done first. Econowave
  9. Mike and Eric: Thank you both for your thoughts. Mike, I looked at your measurements. Observations: I have to agree, I hear comb filtering which is probably the worst aspect of the Heresys, or any speakers, for me. My K-77M tweeters are much hotter than yours. Eric, I will look at your bandpass design, which would seem to solve some of the issues. If you'd suggest a particular thread with your most recent work, I'd appreciate it. In the mid term I hope to get Soundeasy software, which will help me design networks and increase my measurement capabilities. What to do right now? Well I'm learning....
  10. Thanks, Gil. What you summarize is very interesting, it connects acoustic/electrical systems for me very well and is much appreciated. Please note that the Olson and JBL links you refer to do not appear on your post. Let me test my assumptions now to see if I understand... If I attenuate more than stock at the autoformer, I am cutting voltage, increasing current; equivalent to reducing impedance. Couple that with changing the inductance, which requires a change in cap value to prevent the crossover point from shifting. The resistor across autoformer 0 and 5 gives attenuation of both mid and hi. That resistance in parallel plus the autoformer's impedance in series act like a fixed, though perhaps frequency dependent, L pad for both mid and hi. I am still collating reflected impedance.... I have little knowledge, that makes me dangerous.
  11. Thanks, Dean. I'll dig into it. Can't promise myself it will sink in though. To re-iterate, I only want to bring the tweeter down, not the mid. I assume others have tried to do what I want. I have a Crites tweeter which is what I normally use. I'm just playing with the pulled K-77 to see what I can learn. But if the mod makes it a burden to switch the Crites back in, I might just make an L-Pad I can cut out. Dunno. We'll see. Thanks for the info.
  12. Referring to the Albright mod, keep the 11 Ohm, 20 Watt resistor from first cap to ground? And I notice he has changed that cap from 2uF to 21 uF. What of that? I see he says to keep the tweeter cap at 2 uF. Thanks!
  13. I have used them in other crossovers and I think they are a little softer sounding compared to Solens I've tried. Not much help? I can say that I tried Audiocap Thetas in these Heresys and found them to be harsh. I'm happy with the oil caps I ultimately installed, but those are unobtanium. I recently found a reference for these Cornell Dubiler film foil caps which I may try in the future: AudioHeritage Post But I think Bob Crites knows what works!
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