In Master Charger i use a Laney 60w head and a 4x12 Carlsbro cab (closed back), but because we tune to A standard the low end is ridiculous. It was rattling the back panel of the cab loudly because i'm moving a lot of air, i ended up lining where the panel goes with draught tape but the studio engineer has advised me to cut two ports in the back to let air escape before it damages the Celestions.
The other guitarists lead keeps flying out of the back of his cab, the air is literally pushing it out.
