Sarcher30, the mat I'm referring to is not the "Way Excellent" mat; it's the "Donut" mat found at the bottom of the Herbie's Turntable Mat web page. It's basically the elastomer wafer of the "Way Excellent" mat without the silicone foam base. The "Donut" is not intended to absorb vibrations so it's sonically inert for the most part. That's why I found it to be a good method to adjust for LP thickness and SRA on the Gyro SE.
Theo, I'm not familiar with the Linn 12 platter so cannot say if it will work the same as for the Gyro SE. But I will add that I also use a "Donut" on a Music Hall mmf-7 turntable, which has an acrylic platter, and the results are similar. The main difference is that I use a Way Excellent mat on the mmf-7 and it compresses slightly so I use the 0.81mm "Donut" to account for the compression.
Regards,
Tom
Theo, I'm not familiar with the Linn 12 platter so cannot say if it will work the same as for the Gyro SE. But I will add that I also use a "Donut" on a Music Hall mmf-7 turntable, which has an acrylic platter, and the results are similar. The main difference is that I use a Way Excellent mat on the mmf-7 and it compresses slightly so I use the 0.81mm "Donut" to account for the compression.
Regards,
Tom