Putting one mat on top of the rubber mat is absolutely crazy.
This how SAEC SS-300 looks directly on Technics platter, no bubber.
Resonance in the 200-400Hz range is common to most of the rubber mats, they must be avoided.
P.S. never seen a warped mats, just return it for full refund
This how SAEC SS-300 looks directly on Technics platter, no bubber.
Resonance in the 200-400Hz range is common to most of the rubber mats, they must be avoided.
P.S. never seen a warped mats, just return it for full refund