I used to have some Tannoy dual-concentrics. Check the tweeter response is even across them. Listen for any rub between the woofer and tweeter by playing something with some bottom end, and bring the level up loud for a small time and listen for crackling, etc.
I used to have some Tannoy dual-concentrics. Check the tweeter response is even across them. Listen for any rub between the woofer and tweeter by playing something with some bottom end, and bring the level up loud for a small time and listen for crackling, etc.