The dimensions are 5ft (L) by 1.5ft (W) by 1.5ft (H). The weight would be >15Kgs. The cabinet is sitting on base of two wooden strips 1 inch thick running along the width.
Just for my understanding, if the base is heavy & stable, how does minimizing surface area of contact with the ground help reduce resonance?
The vibrations will not travel upwards with just a tiny surface area in contact.
I thought you said the cabinet was also resonating did you not? If its solid and heavy then you can try attaching small spikes to your amp with stick-on. Very easy to apply and affix.
Regards