It sure sounds like my old Ampeg GT-15C. Those are 15 " speakers and they came three ways , either CTS, Altec 418 B or JBL. It's a solid state head that is rated at 230 watts peak/ 100 watts RMS and were made from 1965 to 1969. A good amp for it's time but it ain't no SVT. I've got a 1967 model and I've had it since 1968 , no clue what it's worth. Mine seved me well for many years but it hasn't seen action in a couple of decades. As Patman said, not as desireable as the tubies.
I had one of my speakers reconed a few years ago, and mine is in pretty good shape but it never gets used anymore.
Rick