Daddy Dee Posted February 11, 2004 Share Posted February 11, 2004 Much to my wife's dismay, Bob Crites told me about the Klipsch Forum. And since I am so easily entertained I hang out here alot. I'd done some business with Bob on Ebay getting K77 tweeters and diaphragms for a DIY LaScala project. A few weeks ago I purchased a Type A crossover replacement from Bob and put them in my Khorns. Man, they sound sooooo smooth. Also have gotten a pair of Type E crossover replacements for Heresy and a pair of K55 replacements that I am just about to put into a Heresy rebuild. Bob has got some of his stuff out on Ebay, but wanted to clue the forum in to an excellent source for this kind of gear. The construction is neat and solid. Sounds fabulous. Bob can articulate his philosophy better than I, but he is one of the many true appreciators of PWK's work, and he wants to build quality replacement items so that vintage Klipsch speakers will sound as good as they did new. I know that there are a few other forum members who have done business with Bob, who might want to chime in. His forum username is BEC. Thanks for the great crossovers. Quote Link to comment Share on other sites More sharing options...
Daddy Dee Posted February 11, 2004 Author Share Posted February 11, 2004 Quote Link to comment Share on other sites More sharing options...
leok Posted February 11, 2004 Share Posted February 11, 2004 Nice thing about those oil caps is they seem to not need conditioning .. just plug-n-play. Leo Quote Link to comment Share on other sites More sharing options...
NOSValves Posted February 11, 2004 Share Posted February 11, 2004 I've bought tubes from Bob a number of times ! He always comes up with a steady supply of 6BL8, 6GH8 and 6U8A for me. Craig Quote Link to comment Share on other sites More sharing options...
BEC Posted February 11, 2004 Share Posted February 11, 2004 Leo I did condition them anyway. Built a cheap power supply to cook each cap for about 30 minutes at 85 volts dc just to be able to say it was done if someone asked. Bob Quote Link to comment Share on other sites More sharing options...
itsmyforte Posted February 11, 2004 Share Posted February 11, 2004 BOB Rocks!! he helped me out and gave great advise. Quote Link to comment Share on other sites More sharing options...
mungkiman Posted February 11, 2004 Share Posted February 11, 2004 Bob, I'm still hoping to get the '67 "B" networks from you after you are done with them. Please keep me in mind. Thanks, Chris Quote Link to comment Share on other sites More sharing options...
BEC Posted February 11, 2004 Share Posted February 11, 2004 Chris, I haven't forgotten you. I just need to keep them a few more days to get a couple of more references traces from them. They are very good by the way. Best ones that old that I have ever tested. Bob Quote Link to comment Share on other sites More sharing options...
Deang Posted February 11, 2004 Share Posted February 11, 2004 Sweet. Man, I'd need boards the size of tennis courts to use those oils for the crossovers I do. Quote Link to comment Share on other sites More sharing options...
leok Posted February 11, 2004 Share Posted February 11, 2004 Oh. Well that probably eliminates the need for break in, which is why they were so sweet from the start. I forgot .. PIOs sound terrible at first, but break in very dramatically. How soon I forget. Leo Quote Link to comment Share on other sites More sharing options...
Cut-Throat Posted February 11, 2004 Share Posted February 11, 2004 So Leok, how long should this dramatic break-in take. Just playing music? Quote Link to comment Share on other sites More sharing options...
Deang Posted February 11, 2004 Share Posted February 11, 2004 With horns -- about 50 years. We can either pump White Noise through them with 100 watts for a month, or run them in with DC at near their rated working voltage for a few minutes. Quote Link to comment Share on other sites More sharing options...
JohnA Posted February 11, 2004 Share Posted February 11, 2004 I rather see the autoformer and woofer inductor on opposite sides of the board plus one rotated 90 degrees so they can't interfere with each other. Quote Link to comment Share on other sites More sharing options...
BEC Posted February 11, 2004 Share Posted February 11, 2004 John, I tried several different mounting schemes and used the spectrum analyzer to trace the three voltage outputs in the different configurations. Mounting made no difference to any point on the curves. Bob Quote Link to comment Share on other sites More sharing options...
Cut-Throat Posted February 11, 2004 Share Posted February 11, 2004 Dean, 50 years - I am a patient man. At least they sound good while I wait! Quote Link to comment Share on other sites More sharing options...
mungkiman Posted February 11, 2004 Share Posted February 11, 2004 Thanks Bob, Just let me know when you are done with them. I was hoping they would be in great shape, as that would make sense based on the condition of the cabinets and components. I can't wait to fully restore these Cornwalls, with your help. Thanks for your interest and dedication regarding Klipsch speakers and their continued performance. Chris Quote Link to comment Share on other sites More sharing options...
Deang Posted February 12, 2004 Share Posted February 12, 2004 Where do you guys find those "cans", and are they really PIO, or standard high voltage rated motor run types? Quote Link to comment Share on other sites More sharing options...
BEC Posted February 12, 2004 Share Posted February 12, 2004 Dean, The caps I am using are the GE 370 Volt motor run ones. Bob Quote Link to comment Share on other sites More sharing options...
Cut-Throat Posted February 12, 2004 Share Posted February 12, 2004 "Where do you guys find those "cans", and are they really PIO, or standard high voltage rated motor run types?" Dean, In the picture I have the 13uf that are the same as Bob's. The 2uf on the tweeter is from a Klipsch Heresey type 'E' crossover. Actually I experimented with a 2uf Motor Run and the Klispch Cap. The both look pretty identical to me and sound identical also. My question to you is "what is a really PIO cap" vs. the Motor Run caps? I believe the motor runs also have Paper impreg with Oil. Quote Link to comment Share on other sites More sharing options...
Deang Posted February 12, 2004 Share Posted February 12, 2004 No, all manufacturers of current motor run types use metallized polypropylene in oil. You have to go NOS to find paper. Also, I've always been a little confused by the use of motor run types as these are designed for 50-60Hz systems, and not recommended for use in systems generating frequencies higher than that. There are oil can types that can be used for AC filtering for frequencies higher than 50-60Hz, but seem to be designed more for power supplies. The caps made by manufacturers for input/output filters for DC blocking purposes always seem to be wrap and fill types. At any rate, all of these caps are very different from each other, and each has been designed for a very specific purpose in mind. Sites like http://www.faradnet.com/ are helpful here, as well as the manufacturing sites. Most audio sites aren't always that helpful. I find the DIY sites much more informative. I especially like the LDSG site. http://ldsg.snippets.org/appdx-e.php3 Quote Link to comment Share on other sites More sharing options...
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