| 70's ampeg serial numbers are pretty much useless for dating. If it's an 8x10 it was an SVT cab. Up until about 74 they were square back, 74 and after they were tilt-back. As Chris said, pull the speakers and look for a date code, should most likely start with 137 or 67, and the four digits after would be the year and week of manufacture for that speaker. |