I have a double thick stiffer backed felt mat for my LP12. with a label indentation area. I pulled it off an old trashed lenco, IIRC. It was glued on, from the factory. Best felt mat ever, so far...
The LP12 needs a felt mat, overall. I've tried many a mat on an LP12, but keep returning to some form of high grade semi compresed felt.
The LP12 needs a felt mat, overall. I've tried many a mat on an LP12, but keep returning to some form of high grade semi compresed felt.