owlsplace Posted July 31, 2016 Report Share Posted July 31, 2016 Couldn't resist posting this photo of Kent's SRC that arrived today. It seems SRC's are not prone to impact damage -- they just seem to fade away and refuse to accept input from their remotes. I'm limited on test equipment but if anyone can pinpoint a schematic that seems like a great place to start this project. Previous discussion leading to this event: Roger Link to comment Share on other sites More sharing options...
ra.ra Posted July 31, 2016 Report Share Posted July 31, 2016 You must've had the same shipping crew on duty that I had when I received this package. I thought I was purchasing two AR-7 woofers, but only one arrived, and it was torn and punctured (but eventually useable). Link to comment Share on other sites More sharing options...
JKent Posted July 31, 2016 Report Share Posted July 31, 2016 Incredible! Big "FRAGILE" stickers on every side. I trust the inner box was OK. It was insured, so if you need to file a claim..... I have tried to locate a schematic. Even emailed back & forth with Ken Kantor himself (a very nice guy) and even he could not locate one. So I think schematics are unobtainium. When I recapped it I just used same value (uF) higher voltage good quality caps. -Kent Link to comment Share on other sites More sharing options...
owlsplace Posted July 31, 2016 Author Report Share Posted July 31, 2016 14 hours ago, JKent said: Incredible! Big "FRAGILE" stickers on every side. I trust the inner box was OK. It was insured, so if you need to file a claim..... I have tried to locate a schematic. Even emailed back & forth with Ken Kantor himself (a very nice guy) and even he could not locate one. So I think schematics are unobtainium. When I recapped it I just used same value (uF) higher voltage good quality caps. -Kent Kent, Your packing was excellent and the unit arrived unscathed but I thought the crushed box was humorous with the fragile labeling. Ok, I guess maybe cobbling together some kind of block diagram may be a place to start with this project. Worst case scenario would be disassembling the working unit for comparison and trashing it in the process .... Inquiring minds want to know! Looks like the eprom may be the "Achilles' heel" here, program, flashing, etc.: Roger Link to comment Share on other sites More sharing options...
ar_pro Posted July 31, 2016 Report Share Posted July 31, 2016 Stereophile's Kal Rubinson made some modifications to his SRC, and wrote of using a schematic. It's a long shot, but you might try to reach him through the Computer Audiophile site: http://www.computeraudiophile.com/members/kal-rubinson/ Link to comment Share on other sites More sharing options...
JKent Posted August 1, 2016 Report Share Posted August 1, 2016 That would be great. I'd like to know about his mods. Looks like you have to be a member to contact him. I'll try joining (although I'm not a computer audiophile). Kent PS: I just registered and sent him a PM. Will let you know if I get a reply. Link to comment Share on other sites More sharing options...
owlsplace Posted August 1, 2016 Author Report Share Posted August 1, 2016 I like these units but reflashing those Teledyne eproms is beyond me at the moment. The design concept doesn't seem that complex though. Roger Link to comment Share on other sites More sharing options...
JKent Posted August 2, 2016 Report Share Posted August 2, 2016 I DID hear back from Kal Rubinson (Senior Contributing Editor, Stereophile). Thanks ar_pro! He has promised to send some info so I'll be sure to post it as soon as it's received. -Kent Link to comment Share on other sites More sharing options...
owlsplace Posted August 2, 2016 Author Report Share Posted August 2, 2016 6 hours ago, JKent said: I DID hear back from Kal Rubinson (Senior Contributing Editor, Stereophile). Thanks ar_pro! He has promised to send some info so I'll be sure to post it as soon as it's received. -Kent You da man Link to comment Share on other sites More sharing options...
JKent Posted October 5, 2016 Report Share Posted October 5, 2016 On 8/2/2016 at 11:16 AM, JKent said: I DID hear back from Kal Rubinson (Senior Contributing Editor, Stereophile). Thanks ar_pro! He has promised to send some info so I'll be sure to post it as soon as it's received. Well, Kal’s a good guy! He took time to send me his schematic (attached) and some notes: C101, C102: Upgraded and bypassed, 10mf, 25V R101,R102,R107-R116: Replaced with 33K metal film R119, R120: Replaced with 333ohms metal film R117, R118: Replaced with 100K metal film Replaced 4136 with TLO75 I followed up with some questions. Kal had “hoped” the TL075 would provide an improvement over the 4136 but “it was not apparent”. The TL075 is kind of hard to find. There's this adaptor, which looks interesting: http://cimarrontechnology.com/rc4136upgradeadapter.aspx -Kent ARSRCa.pdf Link to comment Share on other sites More sharing options...
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