Being a natural cheapskate I opted for the easiest way out. Bought a Randall bass head and ran it into the cab of my guitar amp (a 60's Fender Showman with a 15" JBL). The cab is sealed and makes a great low power cab for bass. I think the Showman is rated at 85 watts, the Randall is solid state and I think that's 100 watts. Still have them both, but I don't use them much. The Showman is great for the Rhodes piano, and the Randall is used just to power a talk box.