turntable isolation shelf

steven0356 · 28th October 2009, 02:19 PM

I was thinking about making a turntable isolation shelf. I was wondering if anyone has made one and how successful it was.

Thanks
Steve

Studio Au · 28th October 2009, 03:31 PM

My system sits on a homemade rack, similar in design to Hi-Fi racks Trio, or the Atacama equinox, made from solid oak.

The shelves however are 'Tesco finest granite worktop savers' similar items available in Wilkinsons (uk for about 9gbp each, 400mm x 300m x 15mm). These shelves are isolated from the rack by sitting on squash balls, a few pounds from any sports shop.

For just over 10 pounds you have a isolation shelf that rivals the ones on ebay costing in excess of 10 times as much.

A dedicated wall mounted shelf would help substantially. Squash balls and granite shelf
to further decouple and isolate any unwanted vibrations.

millerlitescott · 28th October 2009, 10:52 PM

I built a wall mounted sand box with @ 75 Lbs of sand and a granite tile. Worked great. I had zero issues with vibration after I built it. You could wrap on the oak box with your knuckles and barely hear it even with the volume up pretty high.

binspaul · 29th October 2009, 10:58 AM

Go for a granite shelf as done in DPS. It is designed by Frank Schroeder.

Studio Au · 29th October 2009, 12:37 PM

When my DIY Turntable is finally complete a sandbox/granite/oak platform will be made. Similar in design to TNT sandblaster.

The TNT SandBlaster 1.0

steven0356 · 29th October 2009, 02:00 PM

Thanks that's what's great about this forum. All of your ideas got me looking around a little and I found this article. you might find it interesting also

Galibier Design - Frequently Asked Questions

steven0356 · 30th October 2009, 12:17 PM

Sorry here is the URL

Galibier Design - Frequently Asked Questions

steven0356 · 1st November 2009, 01:01 PM

Something I don't quite under stand about the sandbox platforms. Does the top sit directly on the sand with out any other support? If it does how do you get it perfectly level?

fastbike1 · 3rd November 2009, 06:34 PM

Typically there is a shelf that "floats" on the sand. The sand is covered with a plastic film to keep it from getting all over. There is a bit of fiddling to get the shelf/platform to be level. Level also needs to be checked periodically since the sand may shift/compress further.

berndt · 5th November 2009, 03:34 AM

I built the shroeder/makris design on the galibier page.

I built the sandbox out of 1/4" aluminum as that is what I had about.
I still can get a feedback low frequency woofer excursion @ higher volumes but if I keep it under 105db I'm fine.
With the needle in the groove, measuring the voltage output at the phono stage while doing the rap test on the stand I get less than 20mv output.
Regards,Bill

28th October 2009, 02:19 PM	#1
steven0356 diyAudio Member Join Date: Oct 2009 Location: Atlanta	turntable isolation shelf I was thinking about making a turntable isolation shelf. I was wondering if anyone has made one and how successful it was. Thanks Steve

3rd November 2009, 06:34 PM	#9
fastbike1 diyAudio Member Join Date: Aug 2009 Location: North Texas, USA	Typically there is a shelf that "floats" on the sand. The sand is covered with a plastic film to keep it from getting all over. There is a bit of fiddling to get the shelf/platform to be level. Level also needs to be checked periodically since the sand may shift/compress further. __________________ I was so much older then, I'm younger than that now.

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28th October 2009, 03:31 PM	#2
Studio Au diyAudio Member Join Date: Sep 2008 Location: Bristol	My system sits on a homemade rack, similar in design to Hi-Fi racks Trio, or the Atacama equinox, made from solid oak. The shelves however are 'Tesco finest granite worktop savers' similar items available in Wilkinsons (uk for about 9gbp each, 400mm x 300m x 15mm). These shelves are isolated from the rack by sitting on squash balls, a few pounds from any sports shop. For just over 10 pounds you have a isolation shelf that rivals the ones on ebay costing in excess of 10 times as much. A dedicated wall mounted shelf would help substantially. Squash balls and granite shelf to further decouple and isolate any unwanted vibrations.

28th October 2009, 10:52 PM	#3
millerlitescott diyAudio Member Join Date: May 2008 Location: Towson, Maryland	I built a wall mounted sand box with @ 75 Lbs of sand and a granite tile. Worked great. I had zero issues with vibration after I built it. You could wrap on the oak box with your knuckles and barely hear it even with the volume up pretty high.

29th October 2009, 10:58 AM	#4
binspaul diyAudio Member Join Date: Feb 2009 Location: Cochin, Kerala, India	Go for a granite shelf as done in DPS. It is designed by Frank Schroeder.

29th October 2009, 12:37 PM	#5
Studio Au diyAudio Member Join Date: Sep 2008 Location: Bristol	When my DIY Turntable is finally complete a sandbox/granite/oak platform will be made. Similar in design to TNT sandblaster. The TNT SandBlaster 1.0

29th October 2009, 02:00 PM	#6
steven0356 diyAudio Member Join Date: Oct 2009 Location: Atlanta	Thanks that's what's great about this forum. All of your ideas got me looking around a little and I found this article. you might find it interesting also Galibier Design - Frequently Asked Questions

30th October 2009, 12:17 PM	#7
steven0356 diyAudio Member Join Date: Oct 2009 Location: Atlanta	Sorry here is the URL Galibier Design - Frequently Asked Questions

1st November 2009, 01:01 PM	#8
steven0356 diyAudio Member Join Date: Oct 2009 Location: Atlanta	Something I don't quite under stand about the sandbox platforms. Does the top sit directly on the sand with out any other support? If it does how do you get it perfectly level?

5th November 2009, 03:34 AM	#10
berndt diyAudio Member Join Date: May 2006 Location: south san francisco	I built the shroeder/makris design on the galibier page. I built the sandbox out of 1/4" aluminum as that is what I had about. I still can get a feedback low frequency woofer excursion @ higher volumes but if I keep it under 105db I'm fine. With the needle in the groove, measuring the voltage output at the phono stage while doing the rap test on the stand I get less than 20mv output. Regards,Bill

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