Dayton Audio PK165-8 6" Professional Kevlar/Paper Cone Midrange Speaker Dayton Audio's PK165-8 provides high output, extended frequency response, and low distortion—perfect for use in compact full range applications as well as a separate component in multi-way speaker systems. The PK165-8 features a steel frame, Kevlar-impregnated paper cone, treated cloth surround, vented pole piece, and a 1-1/2" aluminum voice coil wound on a polyimide former.