I'd love to hear from as many TBer's as possible the answer to the following questions: 1. What cabinets are you playing through? 2. For how long? 3. What's your take/experience on speaker life? I am playing through Ampeg SVTs : a 410HE and a 115. They're six years old. Fairly steady play. Used but not abused. I know sustain is a funciton of several things, including your strings and bridge. I don't slap and I don't play real loud so they're not driving hard. But at least to me the sound has deteriorated over time. Im just curious how often you guys have switched out this part of your rig on the basis of your cabinet's longevity. Thanks everybody.