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Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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I have owned both. I still have the 5000, but recently sold the 1500. As I recall, the bearing for the 5000 is considerably larger and heavier than the bearing for the 1500....
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Jam, when you first mentioned ZoomSpark perhaps your spellchecker was hyper-active and you meant Zoom Spout. I think it’s this product, right?http://www.highsidechem.com/zoom_spout.htmlOK, so that is ISO 32 (at the bottom of this page) paraffin oil, ...
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You are right that 32 is not too far from 37, but I would probably not want to use any lighter oil than 32.
Yes, a translation of the Hungarian report to English would be appreciated! No rush.
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Measet,Thank you very much for posting this extremely valuable information! It adds to the data base for the 5000. I will have to translate it to English using the Google translator. Now, if someone could locate and post the RY-5500 schematic, we’d a...
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Measet, Because your ball bearing was cracked, it might have locked into one position relative to the spindle and then the sharp edges of the crack wore those concentric scratch marks into the thrust plate. Just guessing here.I look forward to readin...
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I think that I saw someone offering a silicon nitride thrust plate along with the ball bearing years ago. Jam, your solution of simply flipping the thrust plate upside down makes perfect sense, but I suppose a silicon nitride (or similarly hard) plat...
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Excellent photographs, Measet. There is not a lot of documention about the inner workings of the 5000 and this helps....
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Jam,Yes, as I now see, you are right that the bearing was merely filled to the rim with oil and that it doesn’t have a pump feature (like some older turntable bearings did). And yes, the lead is touted for anti-seize (mostly copper these days), but a...
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The MS manual itself describes the lead in the oil and the desirable effect of significant viscosity on damping rotational resonances:https://www.vinylengine.com/ve_downloads/index.php?micro_seiki/micro_seiki_rx-5000-ry-5500.pdf(You may have to log i...
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I have not opened my bearing yet to change the oil, following the philosophy of “if it ain’t broke, don’t fix it”. It’s a different situation here than a car’s oil. The seals prevent the oil from being exposed to oxygen, moisture and other contam...
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[quote user="Romy the Cat"]
Wellington, would you consider to use a different method to inject picture to the posts? Mostly it is what people use.
http://www.goodsoundclub.com/Forums/ShowPost.aspx?PostID=1120
[/quote]Thanks for that...
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Heavy metal, and no acrylic in sight. Disk-cutting lathes from Scully and Neumann....
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Romy, I share your skepticism of the audio media (ALL media, really.), although maybe with a bit less “attitude” than you :). Audio reviewers are predisposed to like the newest thing, especially if they didn’t experience something better from years a...
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None of the above.
I know you weren’t asking me, but you missed that option. The best solution, in my opinion of course, is no vibraplane or anything soft at all beneath the 5000,...
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I cannot give you a break just because you want one, sorry. Two metal objects with dissimilar resonance properties which are in intimate contact can indeed squelch each other’s resonances. The proof is in the pudding. It’s physics. It works....
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Very well. I will email you tonight or tomorrow. Thanks ...
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I prefer to discuss these things out in the open on forums so that everyone can participate unless you have something truly personal to duscuss. Thanks ...
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I was asked for more information on my power supply regulator, which allows the original 100V power line (Japan) to be plugged directly into a 120V line (US), while greatly smoothing the ripple going to the motor.
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Measet, I will try to find a photo and the schematic as you requested, but it may be a while before I can locate them. Plus, we are still digging out from Hurricane Irma down here. As I recall, I beefed up the raw D.C. supply and then used an LM317 r...
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I mentioned above that a user named "kipdent" thought that he heard no difference using the HS-80 on his 5000. Let me correct my aging memory with what he actually wrote in an email to me: "It [the HS-80] is very cool, but I don't think it'...
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Very nice set up. And yes, the HS-80 has a coolness factor, whether it helps the sound or not. I did a double-take when I saw your motor with all those green digits. Then I read what you did.My RY-5500 came with an external 120 V to 100 V step-down p...
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An audiophile who has the user name "Kipdent" on other forums told me privately that he didn't think that he could hear any difference with the HS-80 using his RX-5000. He did not mention to me any problems getting it to function, however. While it d...
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Shipping to Budapest should not be very expensive compared to the item itself. I know that Mirko Djordjevic has shipped overseas many times, so I expect he could tell you about customs costs. He has publicly shared his email in the past, so I will po...
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I am not sure that there would be an audible advantage to the larger feet, but they sure do look pretty nice!I know that Mirko makes such feet, as well as feet for the motor unit. Unless you love machining, it might be easier to buy from him. I was w...
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While my background is in engineering, I am not a metallurgist either. But I do know that 316L is considered an non-magnetic material (see https://greenwoodmagnetics.com/resource/what-is-the-difference-between-304-and-316-stainless-steel/). But even ...
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Ok, so Romy doesn't allow posting a PDF file. Let me try to make a JPG out of it......
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Measet,As you may know, 316L is a low-carbon austenitic stainless steel which has superior corrosion as well as machining and welding properties. It is generally non-magnetic in the raw state, but cold working can convert tiny amounts of its austenit...
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It is entirely possible to buy a good flat CU-180. I have two from eBay there were correctly advertised as being flat. I have also seen them on eBay as being "slightly bent". Those you avoid.But I agree that a replica is a real possibility. I never s...
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Anyone contemplating buying a CU-180 should know that it must be dead flat. Even the slightest departure from being flat will negate the benefit of intimate contact across the entire surface of the platter.How flat? Flat enough that the weight of the...
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Yes, the Law of Diminishing Returns must apply to platter inertia, as it does for so many other things....
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