Ah I see it now! Nice one....
Any chance, guys, of a full-sized close-up screen shot of the whole PCB, and an arrow pointing at that particular bit, just to keep as a reference? The other pics are a bit small
Cheers!
Marco.
Main System
Turntable: Heavily-modified Technics SL-1210MK5G [Mike New bearing/ETP platter/Paul Hynes SR7 PSU & regulator mods]. Funk Firm APM Achromat with Nagaoka GL-601 Crystal Record Weight. Isonoe feet & boots. Ortofon RS-212D tonearm with Denon DL-103GL, in a Denon PCL-300 headshell, fitted with Funk Firm Houdini and Kondo SL-115 pure-silver cartridge leads.
Paul Hynes MC head amp/SR5 PSU. Also modded Lentek head amp and Denon AU-310 SUT.
Other Cartridges: Nippon Columbia (NOS 1987) Denon DL-103. USA-made Shure SC35C with NOS stylus. Goldring G820 with NOS stylus. Shure M55E with NOS stylus.
CD Player: Audiocom-modified Sony X-777ES/DAS-R1 DAC.
Tape Deck: Tandberg TCD 310, fully restored and recalibrated as new by RDE, plus upgraded with heads from the TCD-420a. Also with matching TM4 Norway microphones.
Preamps: Heavily-modified Croft Charisma-X. Power Amps: Tube Distinctions Copper Amp, fitted with Tungsol KT-150s. Quad 306.
Cables & Sundries: Mark Grant HDX1 interconnects and digital coaxial cable, plus Mark Grant 6mm UP-LCOFC Van Damme speaker cable. MCRU 'Ultimate' mains leads. Lehmann clone headphone amp with vintage Koss PRO-4AAA headphones.
Tube Distinctions digital noise filter. VPI HW16.5 record cleaning machine.
Speakers: Tannoy 15MGs in Lockwood cabinets with modified crossovers. 1967 Celestion Ditton 15.
Location: Scotland
Posts: 316
I'm Paul.
Hi kcc123,
I see no reason why the SL150 power supply can’t be upgraded. There are three main power supplies to consider, 20v, 12v, and 5v and the possibility of individual stage regulation as well. The SR3-20 and the SR3-12 could be used to replace the 20 and 12 volt supply sections. The 5 volt regulator is fairly rudimentary and deals with the display electronics so should not be too demanding. However I would prefer to not to take on any more upgrade projects like this at present, until I have finished with the ones I am working on now.
Regards
Paul
Paul Hynes Design
paulhynesdesign.com
High Performance Power Supply upgrades
http://theartofsound.net/forum/showthread.php?t=16655
Location: Somerset, UK
Posts: 717
I'm King.
Hi Paul,
Thanks!
Merry Xmas!
King
Hi Leo,
Fantastic - that's exactly what I was looking for!Black wire running to the point 0v marked with red arrow
![]()
Marco.
Main System
Turntable: Heavily-modified Technics SL-1210MK5G [Mike New bearing/ETP platter/Paul Hynes SR7 PSU & regulator mods]. Funk Firm APM Achromat with Nagaoka GL-601 Crystal Record Weight. Isonoe feet & boots. Ortofon RS-212D tonearm with Denon DL-103GL, in a Denon PCL-300 headshell, fitted with Funk Firm Houdini and Kondo SL-115 pure-silver cartridge leads.
Paul Hynes MC head amp/SR5 PSU. Also modded Lentek head amp and Denon AU-310 SUT.
Other Cartridges: Nippon Columbia (NOS 1987) Denon DL-103. USA-made Shure SC35C with NOS stylus. Goldring G820 with NOS stylus. Shure M55E with NOS stylus.
CD Player: Audiocom-modified Sony X-777ES/DAS-R1 DAC.
Tape Deck: Tandberg TCD 310, fully restored and recalibrated as new by RDE, plus upgraded with heads from the TCD-420a. Also with matching TM4 Norway microphones.
Preamps: Heavily-modified Croft Charisma-X. Power Amps: Tube Distinctions Copper Amp, fitted with Tungsol KT-150s. Quad 306.
Cables & Sundries: Mark Grant HDX1 interconnects and digital coaxial cable, plus Mark Grant 6mm UP-LCOFC Van Damme speaker cable. MCRU 'Ultimate' mains leads. Lehmann clone headphone amp with vintage Koss PRO-4AAA headphones.
Tube Distinctions digital noise filter. VPI HW16.5 record cleaning machine.
Speakers: Tannoy 15MGs in Lockwood cabinets with modified crossovers. 1967 Celestion Ditton 15.
I opened my Techie up to check the 0V tag and indeed it had been placed on the top-right post (i.e. the wrong one) by Timestep. I re-routed the cable slightly and attached the tag to the correct bottom-left post. This cable is now quite short and just reaches the SR5 PSU with little to spare, just as I want it for least voltage drop. Things are sounding very good indeed.
I've now received a 4-pin Neutrik connector and will fit this next, to replace the 5/2.5mm PSU plug.
Hi Martin,
Quoi??I opened my Techie up to check the 0V tag and indeed it had been placed on the top-right post (i.e. the wrong one) by Timestep.
This is impossible... After all, we're talking about the WORLD's No1 Technics guru, no less!!!![]()
Yup, I can see the logic in that, and am sure that there are undoubtedly sonic benefits to be had. I'll be doing the same thing on my deck with the Kimber DC cableI re-routed the cable slightly and attached the tag to the correct bottom-left post. This cable is now quite short and just reaches the SR5 PSU with little to spare, just as I want it for least voltage drop. Things are sounding very good indeed.
I've now received a 4-pin Neutrik connector and will fit this next, to replace the 5/2.5mm PSU plug.
Let us know how you get on and whether you can detect an overall sonic improvement after having carried out both modifications
Marco.
Main System
Turntable: Heavily-modified Technics SL-1210MK5G [Mike New bearing/ETP platter/Paul Hynes SR7 PSU & regulator mods]. Funk Firm APM Achromat with Nagaoka GL-601 Crystal Record Weight. Isonoe feet & boots. Ortofon RS-212D tonearm with Denon DL-103GL, in a Denon PCL-300 headshell, fitted with Funk Firm Houdini and Kondo SL-115 pure-silver cartridge leads.
Paul Hynes MC head amp/SR5 PSU. Also modded Lentek head amp and Denon AU-310 SUT.
Other Cartridges: Nippon Columbia (NOS 1987) Denon DL-103. USA-made Shure SC35C with NOS stylus. Goldring G820 with NOS stylus. Shure M55E with NOS stylus.
CD Player: Audiocom-modified Sony X-777ES/DAS-R1 DAC.
Tape Deck: Tandberg TCD 310, fully restored and recalibrated as new by RDE, plus upgraded with heads from the TCD-420a. Also with matching TM4 Norway microphones.
Preamps: Heavily-modified Croft Charisma-X. Power Amps: Tube Distinctions Copper Amp, fitted with Tungsol KT-150s. Quad 306.
Cables & Sundries: Mark Grant HDX1 interconnects and digital coaxial cable, plus Mark Grant 6mm UP-LCOFC Van Damme speaker cable. MCRU 'Ultimate' mains leads. Lehmann clone headphone amp with vintage Koss PRO-4AAA headphones.
Tube Distinctions digital noise filter. VPI HW16.5 record cleaning machine.
Speakers: Tannoy 15MGs in Lockwood cabinets with modified crossovers. 1967 Celestion Ditton 15.
Nearly forgot: I've put a set of sorbothane Flatfeet under the PH PSU feet.
http://cgi.ebay.co.uk/Flatfeet-Sorbo...item35aee26769