The Pioneer TS – a1375r 5 – 1/4 in. 3 – way speakers features a multilayer mica matrix cone where a surface containing mica properly maintains the cones superior rigidity and internal loss while another layer makes excellent use of light, water-resistant material. Highly elastic polymer surrounds help keep cone movement under control, for smooth, tight bass. Package Content: 3 x TS – a1375r two – way speakers Two grilles, two 12 in. Lengths of speaker wire, mounting hardware, manual, warranty. sensitivity-v 89 DB, Impedance 4 ohms, Height 2.10. Batteries Included. Language English, Spanish, French Assembly Required.