I have a home built 030 (?) I made in the 60's, a d130 15" with an 075 and a 2400 crossover. I thought I would add a driver and bought a pair of 2470s. They have no volumn compared to the original 030. They are 16 ohms, and I think my old set up is 8 ohm. Did I just buy something that is incompatable, or can this be fixed? Which crossover would I need? Are the drivers just blown? I know most people on this site have a way better knowledge of electronics, but if you could help a dummy, I would be very grateful. Thanks, Joe at [email protected]