Hello! So, I have this Carvin PB200-15 Combo amp which I bought long time ago, probably 2004 when came out, and that has been my only bass amp. I've replaced the speaker, misplaced the knobs, changed a fuse...and it keeps going! Now that I' more "serious" about tone, I'm kinda disliking the bass amp. I was thinking about solutions...should I change the speaker again? Maybe a Neo one? And then it came to me, why not a new head? Maybe the BX500 by Carvin? I'm not really that techy, let alone amp tech...so help me out! Would a Carvin BX500 bass amp head fit AND work with my current combo? Heres the link to my combo amp: The Carvin Museum - 2004 Red Line Bass Systems Maybe change the fabric to Tweed Tolex and put a fabric grill...that would look cool! Thanks!