Hi all
I'd like to share a pic of the latest TT that I've built.
The components are from a Toshiba TT. I like a minimalist look and so I built a separate control and power supply box which feeds into the back of the plinth.
The plinth is laminated with walnut and maple, machined underside for the DD motor. The arm has Cardas wire feeding RCA jacks. DIN plugs/sockets connect the power supply to the turntable. The arm base sits on an aluminium base that is vertically adjustable to accommodate different cartridges. The one shown is Ortofon, but normally I use a Dynavector MC. This took me a long time to build as there were a few techy details to overcome but at the end it sounds good.
It's sitting on a piece of cork in the pic as it has spiked feet. I may change them later. It was mainly for aesthetics that I used them.
Regards John L.
I'd like to share a pic of the latest TT that I've built.
The components are from a Toshiba TT. I like a minimalist look and so I built a separate control and power supply box which feeds into the back of the plinth.
The plinth is laminated with walnut and maple, machined underside for the DD motor. The arm has Cardas wire feeding RCA jacks. DIN plugs/sockets connect the power supply to the turntable. The arm base sits on an aluminium base that is vertically adjustable to accommodate different cartridges. The one shown is Ortofon, but normally I use a Dynavector MC. This took me a long time to build as there were a few techy details to overcome but at the end it sounds good.
It's sitting on a piece of cork in the pic as it has spiked feet. I may change them later. It was mainly for aesthetics that I used them.
Regards John L.
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Nice re-imagining John! How about some more pics?
Could you include a 'before' pic so we can see the full scope of your creativity?
Could you include a 'before' pic so we can see the full scope of your creativity?
Thanks Galu
I didn't get a pic of the original TT but here are a few that may be of interest.
The first is a trial layout for the power supply and the second is the complete unit.
Third pic is a close up of the TT end. You can see a knurled brass knob at the rear. That is the vertical adjustment.
Regards John L
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Sorry about the rotated images.
I previewed and it turned correct for me but after I posted it wouldn't. I'll see if I can correct it.
I previewed and it turned correct for me but after I posted it wouldn't. I'll see if I can correct it.
Thanks for the extra pics John - I'll study them after some shut eye!
What model was your donor Toshiba?
What model was your donor Toshiba?
Hi John!
I see you have had to raise the arm rest on a platform to accommodate the Ortofon cartridge in post #1.
The TT looks neater without this platform when using the DV-20X cartridge in post #3.
Once again, nice work!
I see you have had to raise the arm rest on a platform to accommodate the Ortofon cartridge in post #1.
The TT looks neater without this platform when using the DV-20X cartridge in post #3.
Once again, nice work!
Thanks for the comments!
This was an experiment in aesthetics combined with practicalities.
I know that the arms "should" be solid but I wanted to experiment with an adjustable mechanism. Quite honestly and without measuring instruments it sounds better than my DD Technics turntable. This may be due to damping the arm and the effect of the maple plinth. The motor is mounted though rubber mounts to the maple. Certainly the Dynavector MC cartridge sounds appreciably better than the Ortofon, but I had installed the Ortofon to demo on a friend's amp and he didn't have a pre-amp. The aluminium plate is attached to a polished 19mm dia shaft that fits into a very low friction bush with about .0005" clearance. The adjusting brass ring at the base screws into the bottom end of the shaft and bears against a low friction thrust bearing (I forget the name of the material). Tension is applied to the base via 3 wave springs.
The only small issue I have is a light hum (almost imperceptible) that might mean a new cap on the AC side.
I likely wont make another like this but it was an interesting concept.
Regards John L.
This was an experiment in aesthetics combined with practicalities.
I know that the arms "should" be solid but I wanted to experiment with an adjustable mechanism. Quite honestly and without measuring instruments it sounds better than my DD Technics turntable. This may be due to damping the arm and the effect of the maple plinth. The motor is mounted though rubber mounts to the maple. Certainly the Dynavector MC cartridge sounds appreciably better than the Ortofon, but I had installed the Ortofon to demo on a friend's amp and he didn't have a pre-amp. The aluminium plate is attached to a polished 19mm dia shaft that fits into a very low friction bush with about .0005" clearance. The adjusting brass ring at the base screws into the bottom end of the shaft and bears against a low friction thrust bearing (I forget the name of the material). Tension is applied to the base via 3 wave springs.
The only small issue I have is a light hum (almost imperceptible) that might mean a new cap on the AC side.
I likely wont make another like this but it was an interesting concept.
Regards John L.
I'd love to see a pic from the underside, but understand it might be too much of a pain to take it.
Randy
Randy
Attachments
Thanks John - I've added details here for completeness!
Aurex Toshiba SR-255 - Manual - Direct-Drive Turntable - Vinyl Engine
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