Interesting Matrin, did you have the Herbies mat before the copper mat, and do you have the external PSU to go with the copper mat?
Double Daftee
Location: Essex, UK
Posts: 3,439
I'm Andy.
Interesting Matrin, did you have the Herbies mat before the copper mat, and do you have the external PSU to go with the copper mat?
System; Michell Gyrodec SE/ Orbe Clamp/ Gert Pedersen armboard mod/ HR PSU/ SME V / J7 Tonearm cable/Ortofon Cadenza Black// Jez Arkless Turbo nutter B------ /Trichord Dino+
Amplification and loudspeaker set up is at the moment being split into two groups, comprising the following;
1. Same sources as above; SONY TAF-770ES/SONY CDP761E/Cable Talk 3.1 loudspeakercable/ Harbeth Compact7ES2/ Stands
2. Virtue Audio Sensation M451battery PSU, ClarityCaps upgrade/ Sensation M901/Russian PIO caps with Teflon bypass caps upgrade/ JT Dynamic PSU with various tweaks/ Connex Audio 5N Litz loudspeaker cable, Impulse H6 Loudspeakers.
Me so horny- Impulse H6 Horny
Circuit Junkie & DIY Room Forum Leader
Location: Notts UK
Posts: 1,804
I'm sure somebody could post pics and a few details with the fitting, it would be nice to see and helpful for others tooOriginally Posted by Marco
Hamish/Giovanni,
Mmm... Seems easy enough, but I think I'd rather watch someone else doing it first, so I can see it for myself. Sorry, that's just the way I am!
Marco.
Having plenty of detailed pics attracts more interest anyway imo
Cheers,
Leo
Banned
Location: Lancaster(-ish), UK
Posts: 16,936
I'm ChrisB.
A video on you Tube would do it
ELP Fanboy
Location: Yorks
Posts: 16,643
I'm Nobody.
Does anyone know the actual weight of an original Techy platter?
Yes, I had the Herbies mat first. It does a good job of damping the Techie platter, but the Copper mat makes it completely inert. I have the external Timestep PSU.Interesting Matrin, did you have the Herbies mat before the copper mat, and do you have the external PSU to go with the copper mat?
ANDRE,
Your concerns about over stressing the motor are ill founded. The motor is sufficiently capable of driving a 14lb platter. As I said earlier the motor can stop the new platter in 3/4 of a turn from 45rpm. (using Dave's older Power Supply) Starting may take a fraction of a second more but then we are not in the DJ business are we?
In fact I am talking to a number of folks from 'The Secret Society of Lathe Trolls' a web site dedicated to those people who directly cut Vynal.
Many of whom use the SL1200 model and require a much heavier platter.
DSJR,
The images you posted would appear to be of the SL1500, This TT has a different mechanical arrangment to the SL1200MKxx models. The coil assembly is separate from the motor drive board, and the bearing housing is different. Also the control cirduitry is somewhat less sofisticated in it's design for very fine speed control.
Remove the bearing/coil unit and check to see if the bearing housing is the same as the standard SL1200. The ring magnet on the platter also differs from the SL1200.
In fact the SL1200 represents a refinement in manufacturing methodology over the SL1500, in that savings were obtained by making the drive coil and main board all one piece component.
Site Owner/Administrator
Location: Wrexham, North Wales, UK
Posts: 110,478
I'm AudioAl'sArbiterForPISHANTO.
Hi Mike,
I've no doubt you're right, but how did you come to this conclusion, i.e. based on what data?The motor is sufficiently capable of driving a 14lb platter.
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.
Senior Member
Location: Banbury, Oxfordshire/Panteg is where my late father was born
Posts: 4,381
I'm Chris.
Hi Martin
How would you describe the improvement , with the copper mat ?
Chris
We've gone on holiday by mistake !
Marco,
I stated 14lbs as a rough guide based on the fact that I ran one of the platter blanks, fitted with centre boss but withaout any other machining, This particular one weighed about 13.5lbs. There was no apparent motor drive problems and it held the usual rock solid speed control as viewed on a strobe disc.
Hi Chris
It's difficult for me to separate the Copper mat's performance because, without it, my arm won't quite go low enough to set accurate VTA. What I can say is that the arm + mat combination gave me a huge step up the 'realistic' ladder, portraying the soundstage and musicians in a very natural way with no tonal colouration and greatly expanded dynamic range.
If Mike's platter does the same thing then it's going to be a winner.
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