Granite plinths and treble distortion

[Lawrence001]

I've always been a bit dubious of these on carpets as I felt they rocked slightly and spikes were better. However I've just had a night and day epiphany with my new speakers (Jas Audio Orior Grands).

I decided to try plinths as the speakers have downward firing ports, and I've got suspended wooden floorboards. Anyway not only was the bass tightened as I hoped but the treble cleared up massively.

What I thought was a brightly voiced ribbon tweeter I was struggling a little with was in fact distortion caused possibly by the instability of the wooden floors. I'm a very happy chappy now