Hi, My band has been rehearsing at a studio with a really great rig, but I want to be able to translate that live which worries me. We have a hartke rig but it doesn't produce that growling-kick-in your heart- feel that the Ampeg does. I love DIY type setups, and was wondering if it's possible to DIY an affordable rig to produce that sound? Maybe getting a combo amp and replacing the speakers? When we rehearse our studio has a great rig it's an Ampeg SVT 810, and B2r head. Any advice would be really appreciated!