Granite Slabs

Great information here - thanks to those with experience for weighing in!!

anyone have thoughts on speakers on 2nd floor on hardwood floors?  I have Vandy 5s and they are just on small spikes.  Any views on which route I should take platform or ISO wise?

happy thanksgiving to all

Ebay or FB Market Place will help source Granite using a local search. 

Monumental Masons use thicker slabs than Kitchen C'tops, the M' Mason will have off cuts that can be tidied up.

 I have wrote on this forum teirs under a Speaker bring the most attractive results.

Three Tiers of Separators and Two Platform Tiers is a excellent starting place and able to be achieved in the low hundreds if purchases are prudent.

Granite at 50mm - 75mn thickness is fine as one of the platform tiers. Granite near 20mm thickness does not deliver as the thicker slab does. 

gndrbob

regardjng your comment on Amazon selling “machine plates”, I’m a bit new to this area, can you provide a bit more color on what I should search for on Amazon?  When this rookie enters on Amazon search, it just shows workout platforms.

greatly appreciate the help

https://www.amazon.co.uk/HHIP-4401-1597-Granite-Surface-Plate/dp/B08BXMX46W/ref=sr_1_2?asc_source=01H8HFYCRM99TJ9FED7FSB1ZXC&crid=18KGO8XAFZZ7F&dib=eyJ2IjoiMSJ9.232CKKt0hr-jungdZugkjZ7qNo185dO8bd0NCmJGuEcGZHhLVVtqGBZU1r-B34P8gn0Gjbv_CBNTREyJ5hzmASRzXidIC308gb8LCXmRle2C5SCbcMrap21h9thdmFTF8SUVgQtPZF0LSET-yCL6PJnBkedAq4M4dLnJ3KKNHY-qej5FAUjkjBHDgDzpCuXcBkOkjUJN_3hrAIz7oEhwfzHjcykLIr9he9yZJ9q8_o14oarB567arAL2P8rWrYZQbnbJfh-pVAqNTNW6JLZEMRIb-WS5v1jnmQWVPcmyTq0.VxXdDrpTsovlgD5A-YhqYzXRSNm62KG5W9IE_dCj4NU&dib_tag=se&keywords=engineers%2Bsurface%2Bplate&qid=1764097976&sprefix=Engineers%2BPlate%2Caps%2C387&sr=8-2&tag=snxgb19-21&ufe=app_do%3Aamzn1.fos.95fd378e-6299-4723-b1f1-3952ffba15af&th=1

https://www.ebay.co.uk/itm/365966181421?_skw=Granite+Surface+Plate&itmmeta=01KAY7990GBRKVA4NR48D31503&hash=item553548c42d:g:-qQAAeSwqUVonOL6&itmprp=enc%3AAQAKAAAA8FkggFvd1GGDu0w3yXCmi1eJQZCaXj8UaQUEpHeLXThzTsDOeyKnOfwR5RgLI19LQdiAeKX4rclm1IjzfHFROUpqE83xDEjA4wzAzQnHaHIZyDenV2dY1iQO%2B9M7810k1%2Fr2EZ29rph1qArLOWMloV33FUW3jNmae73FIrkd6CNBXHbkIh8i6hgEQJng2rwjkHnndhXvY3osz7uhOtrRoITWoyuygyVNBNpCmknQNYk%2B5pOJAvn7zCKfR2H3R6Z3VBgL9qPQHRPBVc8dtihvW4y%2BZNDWsUqcUOqK4lV4DcmgmSWep4UknPVgdD6Rn9pX4g%3D%3D%7Ctkp%3ABk9SR8SQpcfXZg

Thicker is better, common sense of course should be applied. 
if you will be ordering from granite cutting shop, don’t tell them that you’ll use it for sound system. Tell them you’ll use them as kitchen cutting boards so it won’t cost you a fortune. This strategy actually helped me to save a hundred.