Hi --- Posting my experience with my Mesa Boogie cap --1X15 rated at 400 W -- would like to get expert opinion on whether I can get better sound/performance by replacing the speaker. Say, with a Celestion 15-in rated at 400 or 500 W. My amp is a Behringer BX3000H rated at 300 W. I got both via Craigslist --- $110 for the cab and $75 for the amp. So, I may get a new or better amp soon. The existing one has lots of hiss and buzz. Given that I spent very little for used equipment, I don't mind parting with $100 - $150 for a new speaker. In general does replacing the speaker with new really improve the sound? I play on a Yamaha BB1200S --- usually pretty high on the neck. Most of what I play is Peter Hook (Joy Division / New Order) stuff. I would be using the set up for small dive bar gigs. Thanks!