Hello all, The bass player in my band recently acquired a 1972 Fender Bassman 100 with the matching 4x12 cabinet. After opening the cabinet up, it's got the stock Utah Fender speakers. Miles, the bass player, is loving the tone out of it. But he wants to know what can be done to get just a tad more headroom out of it. We both agree that the speakers appear to be pretty worn out, also we don't know the last time it was serviced. I've had good luck here on the Gear Page getting advice so I figured I'd ask you guys about it. He basically wants to emulate Paul McCartney's tone on the rooftop performance. That's exactly what he wants. And he's close, but not quite there. What are some good speaker replacement options? Also, the cab rattles a lot, which when reading up about these, appears to be a common problem. What can be done about that? What are some good tube choices for this amp? Keep in mind, he really does love the tone out of this amp. It gets him where he needs to go. I know a lot of people either love or hate the Bassman 100 for bass, but he certainly loves it. He wants to sound exactly like McCartney on the rooftop. Should he look into acquiring a 2x15 Dual Showman Cab? What would that do to his tone? He has a good bit of cash ready to be put into this amp, and he wants it to be in top touring shape. Thanks.