I have no knowledge of the 12's, but with respect to the 10's, based on having auditioned them around 1983, I would say "potentially." However, keep in mind that they are around 35 years old, and both the drivers (especially the surrounds) and some of the crossover elements may need repair or replacement. The crossover network is very complex, containing numerous capacitors and other parts, which very conceivably are no longer at their best.
In short, you may be purchasing a restoration project, or something that no longer sounds as it once did.
Regards,
-- Al
In short, you may be purchasing a restoration project, or something that no longer sounds as it once did.
Regards,
-- Al