I have thought about magnetically levitated platters. If totally suspended by magnetics, would there be any 'bumping' from magnet to magnet? If so, would it help to only partially suspend the platter and have say 80% of the weight suspended, allowing for a stabilization of the platter weight during rotation?
That is Tanto Tempo.
I've got a bunch of Gal Costa early releases too.
But have you heard this one?
It's great
I should have done it already but have been too busy. I will do it in November, hopefully.
I think my 8th or 9th DIY retip. Supex SD-909. Sounds fantastic with a Naimiki Shibatata in place. Quite a bit heavier than the SD-900 Super I retipped with a line contact ruby cantilever, and the 909 is happier with a bit more tracking force (2.1-2.3 or so right now). Now I gotta figure out how to get all the old melted yellow rubber off of the coils... I am sure that is why it's tracking heavy.
I still have an earlyZSupex (from the late 70s) hat i want to get restylused sometime. I really was impressed by it. They were very expensive. About $200 CAD for the cartridge.
dave
I finally completed the build of the HPS6.1 after the final demise of the 5.1. (See here). This is far better with the servo locking on very quickly. As I didn't have a hot air gun I elected to use the pre-tracking regulators I'd built for the previous amp rather than those the PCB is designed to use. I also recycle some of the metalwork.
It's extremely quiet, accurate, and dynamic and does justice to my high-end cartridges. It also has a very high gain in both Low and High configurations (69 and 54 dBs respectively), this could be too much for certain cartridges. I'm not sure if altering the feedback resistors to reduce such would cause an issue (excessive current in the loop for example).
Many thanks to Ovidiu for sharing this design.
It's extremely quiet, accurate, and dynamic and does justice to my high-end cartridges. It also has a very high gain in both Low and High configurations (69 and 54 dBs respectively), this could be too much for certain cartridges. I'm not sure if altering the feedback resistors to reduce such would cause an issue (excessive current in the loop for example).
Many thanks to Ovidiu for sharing this design.
Walnut with about 6 coats of Finishing Oil. I made the enclosures from MDF spray finished in matt black while the back panels are from mild steel (see attached). If I could find a source I would like to have a badge on each box, that would give it a final touch I feel ('HPS6.1 - Phono Amp' and 'HPS6.1 - Power Supply')
Regards,
Karl
Regards,
Karl
