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In Reply to: RE: Thorens pic of the Day posted by user510 on August 16, 2016 at 18:42:22
According to SME, the optimal resonance frequency is in-between 8-Hz and 13-Hz. Therefore, 10.5 to 11-Hz is just fine with 10.2-Hz being the perfect resonance frequency.
Follow Ups:
Perfectly acceptable as pictured and by the numbers presented. Me I like to tune to a somewhat lower frequency .... 9hz give or take half a point. But that's just me, I guess. The combo does work!
-Steve
Edits: 08/16/16
Certainly looks good ... Nicely done.
Just wondering what was needed spring/suspension wise to level out that armboard with that Heavy arm
"Just wondering what was needed spring/suspension wise to level out that armboard with that Heavy arm"
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Each spring has, at its base a screw height adjuster. Typically the platter will be measured for its distance above the motor plate at the three spring stud locations.
There are other steps.... another important one is to rotate each spring around its axis at such an angle as to lean toward center mass. This is done because these wire springs do not have ground ends and tend to tilt around 5 deg. off the vertical.
-Steve
But I have one. Since New in '71
Was wondering just what calisthenics were required to adequately support that Arm. Clearly your Amboard is level.
Unlikely the oem springs/ setup would allow that, certainly Mine wouldn't.. without getting close to coil bind .
"Was wondering just what calisthenics were required to adequately support that Arm. Clearly your Amboard is level.
Unlikely the oem springs/ setup would allow that, certainly Mine wouldn't.. without getting close to coil bind "
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In every case the spring nearest the tonearm carries the largest percentage of the total weight load. If the goal is to reduce the coil bind at the spring nearest the arm mount, then we can still alter the loading at the other two springs. And the only practical way to do that is by increasing weight at those other two locations. The effect, when loading is properly adjusted at the other two springs, is to increase spring compression at the two adjusted springs, is to actually raise the spring nearest the armboard.....and achieve an equal loading at the three.
That said, one reaches a point where too much weight will simply coil-bind all three springs. If that happens the next step, if one insists on carrying a heavy arm, is to buy a set of higher poundage springs....like the ones currently being used on the LP12.
Btw, the SME 3009 S2 isn't 'that' heavy and it will be possible to balance the weight loading at each coil and eliminate any coil binding while retaining the oem springs.
-Steve
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