The CS-1600 ceiling speakers feature a two-way design which gives full-bandwidth sound full of bass & clarity. The main driver is a 6.5& Prime; polypropylene cone complimented by a 1& Prime; ferro-fluid cooled silk tweeter. These low impedance speakers do no sacrifice frequency range in the way that 100/70v line speakers inherently do, & with the rear cabinet allowing full tuning of internal acoustics the bass is rich & deep without distortion.