Alexander Posted December 30, 2020 Share Posted December 30, 2020 1 hour ago, baron167 said: Ordered yesterday Jim was a pleasure to do business with. I’m going to update the newer set including brass screws Sent from my iPhone using Tapatalk What was the price for the AA kit if you don't mind me asking. Quote Link to comment Share on other sites More sharing options...
OO1 Posted December 30, 2020 Share Posted December 30, 2020 1 hour ago, baron167 said: I don’t disagree, but apparently not the original design. the original design did call for brass screws , when I got my LaSscala's years ago , 1pair shipped with brass screws from the Factory- 1 Quote Link to comment Share on other sites More sharing options...
baron167 Posted December 30, 2020 Author Share Posted December 30, 2020 the original design did call for the brass screws , when I got my LaSscala's years ago , 1pair shipped with brass screws from the Factory-Yes, I understand. Did you see my reply earlier in the thread? I am replacing with brass per the original design. Thanks again.Sent from my iPhone using Tapatalk 1 Quote Link to comment Share on other sites More sharing options...
OO1 Posted December 30, 2020 Share Posted December 30, 2020 12 minutes ago, baron167 said: Yes, I understand. Did you see my reply earlier in the thread? I am replacing with brass per the original design. Thanks again. And , you're going with the JEM Performance caps, perfect job @Youthman did his AA in September , the speakers came out identical to the Originals -- 1 Quote Link to comment Share on other sites More sharing options...
jimjimbo Posted December 30, 2020 Share Posted December 30, 2020 2 hours ago, baron167 said: I don’t disagree, but apparently not the original design. Oh man, Allen head instead of Phillips. Banish the thought. Quote Link to comment Share on other sites More sharing options...
wstrickland1 Posted December 31, 2020 Share Posted December 31, 2020 1 hour ago, jimjimbo said: Oh man, Allen head instead of Phillips. Banish the thought. No problem as long as they're not metric Quote Link to comment Share on other sites More sharing options...
CECAA850 Posted December 31, 2020 Share Posted December 31, 2020 17 hours ago, RandyH000 said: And , you're going with the JEM Performance caps, perfect job @Youthman did his AA in September , the speakers came out identical to the Originals -- Does he post on this forum? I was curious about how these are soldered together. Quote Link to comment Share on other sites More sharing options...
MicroMara Posted December 31, 2020 Share Posted December 31, 2020 14 minutes ago, CECAA850 said: Does he post on this forum? I was curious about how these are soldered together. 1 Quote Link to comment Share on other sites More sharing options...
moray james Posted December 31, 2020 Share Posted December 31, 2020 just a comment based upon an observation. Flat wound caps are not a good sounding audio choice as the wind tension is never consistent you are always better off using a round wound cap unless you simply don't have the room to install a round then a flat may be your only option. Quote Link to comment Share on other sites More sharing options...
CECAA850 Posted December 31, 2020 Share Posted December 31, 2020 15 minutes ago, MicroMara said: Thanks. Maybe @JEM Performance will stop by. The soldering reminded me of another JM's work. Quote Link to comment Share on other sites More sharing options...
billybob Posted December 31, 2020 Share Posted December 31, 2020 19 hours ago, Alexander said: What was the price for the AA kit if you don't mind me asking. Maybe you need to speak to the info in the pinned post at the tech/mod forum. Maybe you have. Quote Link to comment Share on other sites More sharing options...
baron167 Posted December 31, 2020 Author Share Posted December 31, 2020 Based on the AA networks on the left (which are in my 1974 Klipschorns), I have been listening to them for several years now and have been kicking around updating or replacing them. I had been leaning towards something from ALK. I never pulled the trigger. I purchased the newer AA networks on the right of the pic from a forum member. I came to the conclusion that I would be most satisfied simply getting the networks back into spec versus trying to improve the design or sound of the Klipschorns through modifications. I’m going with original design as my end goal. Now about those new Jubilees coming out in 2021...Sent from my iPhone using Tapatalk 2 Quote Link to comment Share on other sites More sharing options...
babadono Posted December 31, 2020 Share Posted December 31, 2020 21 hours ago, MicroMara said: Even though brass is not magnetic, it is an electrically conductive copper-zinc alloy. To exclude both, plastic screws are the best solution. yea but....there is no electrical connection to the screw that goes down the center of an air core inductor to fasten it to a wood base. What ever floats your boat. And it needs to be a wood screw or you'll have to put a nut on the other side. 1 Quote Link to comment Share on other sites More sharing options...
Moderators Travis In Austin Posted December 31, 2020 Moderators Share Posted December 31, 2020 1 minute ago, babadono said: yea but....there is no electrical connection to the screw that goes down the center of an air core inductor to fasten it to a wood base. What ever floats your boat. I saw three very knowledgeable crossover guys at a Chief bonehead event about 15 years ago discuss the possible effects of a metal screw on an aircore inductor. 1. No effect whatsoever; 2. Significant effect; and 3. It depends on the application, and other factors. Result: They agreed they would go check it out and get back with each other using a specific XO they were all familar with, and the means by which they would test it and get back with each other. (They were all engineers, or serious electronics guys). Never got to hear the results. Quote Link to comment Share on other sites More sharing options...
babadono Posted December 31, 2020 Share Posted December 31, 2020 3 minutes ago, dwilawyer said: I saw three very knowledgeable crossover guys at a Chief bonehead event about 15 years ago discuss the possible effects of a metal screw on an aircore inductor. 1. No effect whatsoever; 2. Significant effect; and 3. It depends on the application, and other factors. Result: They agreed they would go check it out and get back with each other using a specific XO they were all familar with, and the means by which they would test it and get back with each other. (They were all engineers, or serious electronics guys). Never got to hear the results. HeHe......there is a meeting of the minds, they get hot and bothered about some issue....they go away to do tests/experiments and nothing comes of it. Yea that NEVER happens Quote Link to comment Share on other sites More sharing options...
Dave A Posted December 31, 2020 Share Posted December 31, 2020 6 minutes ago, dwilawyer said: I saw three very knowledgeable crossover guys at a Chief bonehead event about 15 years ago discuss the possible effects of a metal screw on an aircore inductor. 1. No effect whatsoever; 2. Significant effect; and 3. It depends on the application, and other factors. Result: They agreed they would go check it out and get back with each other using a specific XO they were all familar with, and the means by which they would test it and get back with each other. (They were all engineers, or serious electronics guys). Never got to hear the results. I can tell you that the value of the air core coil is changed with the steel screw. I had two AA crossovers and measured the 245uH coils on each with a B&K 885 and one was right at 245 and the other was over 300. My question at the time was why did they measure different and the answer was a steel screw. I have no way or knowledge on measuring the output of a crossover but the coils value most definitely changes with a steel vs brass screw. 2 Quote Link to comment Share on other sites More sharing options...
jimjimbo Posted December 31, 2020 Share Posted December 31, 2020 16 minutes ago, dwilawyer said: I saw three very knowledgeable crossover guys at a Chief bonehead event about 15 years ago discuss the possible effects of a metal screw on an aircore inductor. 1. No effect whatsoever; 2. Significant effect; and 3. It depends on the application, and other factors. Result: They agreed they would go check it out and get back with each other using a specific XO they were all familar with, and the means by which they would test it and get back with each other. (They were all engineers, or serious electronics guys). Never got to hear the results. That’s helpful. Quote Link to comment Share on other sites More sharing options...
jimjimbo Posted December 31, 2020 Share Posted December 31, 2020 3 minutes ago, Dave A said: I can tell you that the value of the air core coil is changed with the steel screw. I had two AA crossovers and measured the 245uH coils on each with a B&K 885 and one was right at 245 and the other was over 300. My question at the time was why did they measure different and the answer was a steel screw. I have no way or knowledge on measuring the output of a crossover but the coils value most definitely changes with a steel vs brass screw. Thank you Dave. Quote Link to comment Share on other sites More sharing options...
Dave A Posted December 31, 2020 Share Posted December 31, 2020 Just now, jimjimbo said: Thank you Dave. You are welcome Jim and have a great New Years. Quote Link to comment Share on other sites More sharing options...
MicroMara Posted December 31, 2020 Share Posted December 31, 2020 I used only plastic screws for my external crossovers to eliminate any induction. 2 Quote Link to comment Share on other sites More sharing options...
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