For sale, only $100 for local buyer. All original 1985 Carvin PB-300 300W solid state head and B-115 cabinet sporting the original 15" MagnaLab 1598. Everything works and sounds fine. Nice covers included. Caveats: some scratchiness in Channel 2 volume control, optional footswitch not included, power cord missing several chunks of outer casing due a demonic pet rabbit (really). Local pick-up only - I'm located in Menlo Park.
For technical details, check out the Carvin Museum: http://www.carvinmuseum.com/decade/82-bassamps.html