Convincing points Yea or Nay,
My arm/arm-board/plinth (70mm 7 layer JVC) are solid, thus I believe all groove/stylus vibration is going into the cartridge; Plinth factory leveling feet on 2" square isolation pads to lessen my springy wood floor vibrations as I walk away.
I've got a few sheets of 'gasket paper', you cut your own exhaust manifold or carburetor gaskets from it. I'll dig it out, think about it, perhaps try it on one of my 3 arms.
two layers of heavy duty duct tape? |
millercarbon
there's no need for you to take every opportunity to prove ....
I was letting you know my plinth is solid, and currently nothing else (above the cartridge, or under the tonearm base) is moving. You knew what my point was.
I agree with Chakster, Lew's thing is UGLY!!! And too thick!
I'm also wondering about the adhesive sheets that sound proofing car audio installers use inside door cavities.
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atmasphere, "
If the arm tube is not damped you're going to have problems!" I found this, makes my head spin, especially with short term memory issues. https://forum.audiogon.com/discussions/tonearm-damping-damped-or-not-useless-welcomedAre these two arms (rigidly mounted to my rigid plinth) considered Damped? My 12.5" long one, Gimbal Type (not quick change cartridge). Carbon Arm http://newartvinyl.ru/board/detali_proigryvatelja/tonarm_black_bird12_5_carbon/7-1-0-41
NewArtVinyl says: - Tonearm - 12.5-inch, straight, swivel; gimbal type with internal stabilization according to the Gimbal principle, anti-skating system.
I also have a 9" Acos Lustre GST 801, Dynamic Balance, magnets for stylus force and anti-skate, removable headshell. Precision machined base has wonderful VTA on the Fly. https://www.vinylengine.com/library/acos/lustre-gst-801.shtmlMy old SME 3009, Knife Edge, Damped? https://www.ebay.com/itm/203593495169?mkevt=1&mkcid=1&mkrid=711-53200-19255-0&campid=533.......................................... In any case, I gather you do not advocate adding a soft layer under the tonearm base, or adding a soft layer above any cartridge, correct? IOW, these 'soft' treatments can only be an improvement if they are solving a problem that could/should be otherwise avoided/eliminated, correct?
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lewm, now I know it's Lew M
That was funny, give my apologies to the wife. |
CARTRIDGE ISOLATOR it’s called.
Plinth and Base Isolation put to the side for this:
Jitter within the cartridge’s guts, down the signal wires, put to the side for this:
It’s about Jitter getting into the tonearm and back into the cartridge isn’t it?
It’s about less rigid fastening of the cartridge body, no matter how thin, to the arm isn’t it? This UGLY thing is quite thick.
And, the reviewer (not the isolator’s maker) mentioned a less rigid fastening of the tonearm base to the plinth, a double whammy of some, even if infinitesimal, movement.
Jitter into/back out of the arm, if acknowledged, is unwanted movement, sooooo, isolate from jitter? a speck of isolation (movement) reduces the jitter going/thus reduces the jitter feedback?
That's what makes the Strain-Gauge, supposedly essentially Jitter Free so tempting to me.
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Enabler Quote:
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The material is similar to a good gasket material, flexible and robust."
Who laughed disparagingly at my idea of digging out my sheet of gasket material for a home made try? I can try one or a few layers.
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VTA Refinement
If VTA needs refinement in an arm with no adjustment, I would NOT rely on one side tighter: rather very thin sheets of rigid material on one side, like clear rigid plastic page protectors, cut your own rectangular shape, make notches for bolts. Enough layers to solve it: very tedious, dexterity needed. I like more surface area than round washers.
Hint:
I stay calmer when I don't have an audience, otherwise I misbehave seeking sympathy rather than dealing with it.
Then, if using an Enabler type, a material with designed vibration dissipation, I would want firm tightness on both sides.
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TRY IT Home Made?
Enabler is 1 mm thick I think, I'll start with 1mm of my gasket material.
The Acos Lustre GST 801 arm has the easiest/smoothest VTA on-the fly ever, as well as removable headshell type arm.
I'm gonna get ready, get Arne and Bill over here (that might take a while to coordinate), have a listen together.
I currently have two active MC Cartridges that I like a lot: Goldring Eroica LX Gyger 2 on aluminum and Audio Technica AT33PTG/2 MicroLinear on Boron. (they both use the same loading on the SUT as well).
And, a few MM cartridges mounted in headshells, Shure V15VxMR body with Jico SAS on Boron; AT440ml MicroLine on aluminum. And, my Elliptical: Shure M97xe aging somewhere, or did I give it to my photo friend Bill with my old AT120 TT? (he lives in Vestal NY near McIntosh and Audio Classics). I digress.
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Platter Mat:
After preliminary decisions, I'm also gonna mess this up with alternate platter mats:
1. Existing OEM JVC thick heavy rubber mat
2. Rigid Acrylic
3. Deerskin
With and without the JVC rubber below. Acos solving height changes instantly!
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cartridge bodies with inherent vibration dissipation?
wood bodied cartridges, specially formulated compound bodies, layered construction, IOW: built-in 'enabler' characteristics?
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the majority of our live experiences today are amplified. individual acoustic guitars with pickups, upright bass with pickups, mics, guitar amps with speakers, stage located speakers (musician monitors and front facing), wall of sound, ceiling hung speakers, ....
The many times we saw him, Tony Bennet demonstrated filling Radio City Music Hall a capella with no mic, all the way to the upper decks, but he sure sounded better using a mic and the house system.
the space's acoustics; which seat's you get; sound system engineer's skills; some are awesome, some truly suck, big medium or small.
lps, the recording space, the equipment and engineer's skills and all the subsequent decisions by all the people at every stage are paramount to enjoyable or superior playback.
IOW, it's hit or miss, live or recorded, and I could care less about the difference between .... and .... just gimme something really enjoyable.
I've walked out of many live performances, refused to go to certain venue, .... knowing it SUCKS compared to what I enjoy at home.
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this is what got me excited:
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HS-A02 comes carefully packed in a special protective foam-padded box." |
