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-   -   Periphery clamp (https://www.audioaficionado.org/showthread.php?t=2281)

Jerome W 10-02-2009 09:31 AM

Periphery clamp
 
Hi guys,

Just being curious,
Do some of you use or have tried periphery clamps ? If yes, which one ?
What results ?

I read with lot interest the way Dan flattens his records. This could save me a lot of money compared to a Clearaudio periphery clamp for example which retails at 940 euros !! Dan you're a chief !
Here it is : http://www.youtube.com/watch?v=VZM8iNTZruY. Forward the video at 1 min 37 seconds to see its insertion.

But I think these clamps could be useful even if the record is flat, improving the precision of the tracking.
What do you think ?

Cheers,

Jérôme

jdandy 10-02-2009 10:34 AM

Jérôme.......That individual is deep into vinyl, no doubt about it.

Using an outer edge clamp might yield some damping to the vibrations induced by the stylus in the album during playback, but using the spindle clamp makes the most sense to me. It couples the vinyl to the platter, essentially doing the same thing. An outer edge calmp, such as the one in the video, would be a proprietary device that would have to be manufartured exclusively for the turntable platter it was to be use on, otherwise a perfect fit would be impossible because all turntable platters are not the same diameter. Futhermore, were the vinyl slightly warped, the clamp would not set flush to the entire circumference of the outer edge of the album, and this would not be an advantage, in my opinion.

Jerome W 10-02-2009 11:31 AM

Quote:

Originally Posted by jdandy (Post 39643)
Jérôme.......That individual is deep into vinyl, no doubt about it.

Using an outer edge clamp might yield some damping to the vibrations induced by the stylus in the album during playback, but using the spindle clamp makes the most sense to me. It couples the vinyl to the platter, essentially doing the same thing. An outer edge calmp, such as the one in the video, would be a proprietary device that would have to be manufartured exclusively for the turntable platter it was to be use on, otherwise a perfect fit would be impossible because all turntable platters are not the same diameter. Futhermore, were the vinyl slightly warped, the clamp would not set flush to the entire circumference of the outer edge of the album, and this would not be an advantage, in my opinion.

Thanks Dan,

That makes sense. I think I will try the Clearaudio one. ( 1,5 kgs ! )
But have you see this one : TTSuperRing Outer Stabilizer 1150 Gram 2 layer Dampened Nickel Plated (Bright Silver Finish). There is also a lighter one : 600 gms.
Anyway I will first use your method to unwarp LPs in the oven.
Hopefully the precision was added about celsius because I would have put them at 145 °C and think my wife would not be happy at all :D ( not to mention my record !! )

Cheers

Jérôme

jdandy 10-02-2009 11:48 AM

Jérôme.......140° Fahrenheit will be 60° Celsius. You don't want to do 140° Celsius. That would be 284° Fahrenheit. :yikes:

I use two pieces of 1/4" (6.35 mm) thick glass. It has just enough weight to apply a gentle, even pressure to the record. The outer groove and inner lable areas on an album are slightly thicker than the area where the grooves exist, so the warps are flattened without damage to the groove surface. Keep an eye on the album while you do this, and don't leave it in the oven any longer than necessary. You can remove the top layer of glass once you take it from the oven, but leave the album on the bottom layer of glass until it cools. I have flattened many albums with this process, and always achieved good results.

Jerome W 10-02-2009 01:34 PM

Quote:

Originally Posted by jdandy (Post 39657)
Jérôme.......140° Fahrenheit will be 60° Celsius. You don't want to do 140° Celsius. That would be 284° Fahrenheit. :yikes:

I use two pieces of 1/4" (6.35 mm) thick glass. It has just enough weight to apply a gentle, even pressure to the record. The outer groove and inner lable areas on an album are slightly thicker than the area where the grooves exist, so the warps are flattened without damage to the groove surface. Keep an eye on the album while you do this, and don't leave it in the oven any longer than necessary. You can remove the top layer of glass once you take it from the oven, but leave the album on the bottom layer of glass until it cools. I have flattened many albums with this process, and always achieved good results.

Dan, you're a Chief !! ( Cooking chief also ? :D )

Jerome W 10-11-2009 01:14 PM

I ordered that one finally : TTSuperRing Outer Stabilizer 1150 Gram 2 layer Dampened Nickel Plated (Bright Silver Finish).
First time I don't listen to President Dan ! I hope I won't regret it ! ( I could not accept to pay 940 euros for the Clearaudio's one...)
I will post the results here.

Jérôme

gregswaim 10-11-2009 01:32 PM

Quote:

Originally Posted by C220MC275 (Post 39666)
Dan, you're a Chief !! ( Cooking chief also ? :D )

+1. I'd like to see this sometime on Iron Chef America/Japan as a feature! :D

jdandy 10-11-2009 01:35 PM

Jérôme.......I've got my fingers crossed for you, hoping the TTSuperRing will perform well for you. I am looking forward to your comments once you begin using it.

Jerome W 10-21-2009 10:33 AM

It arrived today at my office !!
Can't wait to be home to try it tonight !
will post pictures and my impressions here.
Cheers,
Jérôme

jdandy 10-21-2009 11:06 AM

Jérôme.......New toys are so much fun. Looking forward to your comments and photos.


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