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In Reply to: RE: Temporary record skipping posted by LaszloPhoto on October 07, 2020 at 23:35:30
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Yes we did. But back in July the problem was intractable. Nothing I did would "heal" the skip. This time I was able to make the skip go away by using the stiff brush. So the issue remains: why do spontaneous skips appear on records that are in good condition and not subjected to abuse? Why are some of them permanent and others capable of being cleaned away?
Friction at point of contact of stylus tip can generate enough heat to melt any gunk (release agent) resident in the groove. That melted gunk may then stick to and build up on the stylus tip, and hunks of that semi-melted klingon crap may then fall off and become lodged in the groove and cause a skip on subsequent plays.
Dislodge the blob of gunk at it plays fine again.
Wow! I did not know this. I did not realize that the release agent could bind to the record groove. But I always put my brand new records in my Spin Clean and clean them carefully. I have always assumed this would remove any release agent on the record. Are you implying that that may not be true?
By the way I clean my stylus (following recommendation from Soundsmith) prior to every play by dropping it on to Blu Tack on a coin set on the platter. I don't think I have ever had any build up on the stylus.
The release agent is added to the vinyl formulation, and under heat and pressure it rises to the surface and aids in a clean release from the mold. Washing a record will not effectively remove it as it's a wax-like substance.BTW, not sure this was a cause or contributor to the problem you had in July, but certainly could explain your most recent issue.
Hey, I just looked at your system details in your profile. Which model of Acoustats do you have? I've got a pair of Monitor IV's.
Edits: 10/08/20 10/08/20
My understanding is that wet cleaning on a vacuum type RCM will not remove mold release agent per se, but ultrasonic cleaning will. In my opinion, it is best to carry out both types of cleaning on all types of records, existing/used and brand new out of the shrink vinyl purchases.
My goodness, I had no idea! So nice to learn things from those who are more expert. Thanks. But why is common wisdom that brand new records should be cleaned in order to remove the release agents? Is that a misunderstanding? Ignorance? Bad advice?
I own Accoustat 2 + 2s. Have had them since 1983. I did one official upgrade to the electronics in the late 90s and then a fairly recent upgrade with my local tech. They have always sounded wonderful to me and reveal every nuance from changing preamp, amp, cables, and putting all electronics on Rollerblocks.
Four panels per side is a sweet spot IMO. More than four and room size becomes an issue.
A good friend has a pair of homemade Monitor 8s in a room that's same size as my room. It sounds really good, but my setup sounds better. His setup is too much for the space and it just doesn't sing like it should. Although in a room half again as big or bigger, and he'd smoke me. Bass down in the upper 20hz range. And not wump, wump, thump bass either. Very fast, tuneful bass. Like it's supposed to be.
Acoustats are still one the biggest bargains in speakers going.
Of course I agree with you. I love my Accoustats 2 + 2s. I have them set up incorrectly because I have no choice. My living room is rather small so I have them much closer to the walls than they should be. But even so, they sound great. Sometimes we just have to accept certain limitations and be happy.
Interestingly, though they are near eight feet high and two feet wide, they blend in with the room which is painted white. My Acoustats are also white. Most people who see them assume they are pillars and part of the architecture. I'v had people attempt to lean against them!
As Opus 33 1/3 indicated last time around, skipping towards the end of a disc is nearly always caused by the arm lift platform not being fully disengaged from the underside of the arm as the latter traverses the disc. This has two causes:1. The OP has a wedge shaped arm (e.g. SME ) and the arm lift is set slightly too high so as the arm traverses the disc the lift platform gets closer and closer to the underside of the arm ( or rather, the arm gets closer and closer to the lift platform) until they contact causing a skip.
2. The arm lift platform is not horizontal being higher to the left side ( looking from the front). The left edge is only under the arm towards the end of the side and if not adjusted can make contact. If the OP cannot alter the platform itself then he should see whether just lowering the lifting mechanism by 1mm or so ensures that it is disengaged throughout after lowering yet he still gets enough clearance for cueing.
"We need less, but better" - Dieter Rams
Edits: 10/08/20
Your suggestion are all valid and helpful. However, in my case I am certain that the arm lift is well clear of the tone arm. On those few occasions when I forget to reset the lift, I know it right away and kick myself for being so careless.
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