The crossover is Speakermans take on Wayne's Pi crosover, and I fooled with attenuation and arrived at 32 ohms and .47uF. The 811B horns are now decorative 'cause good as they are Bill Martinelli's Woodhorns kill them with the 806A drivers.I thought CD's sounded good; I had no idea how great they would sound until I started playing vinyl again.