STUDIO 6 8iW 8" 2 -way In- Wall Loudspeaker, 1" (25mm) Compression Driver with High-Definition Imaging (HDI™) waveguide, 8" (203mm) Polyplas® woofer, Nominal Impedance 6-Ohm, Sensitivity 93dB, Power Handling 60W RMS (250W Dynamic), Recommended Amplifier Power 25W - 125W, Frequency Response 43Hz - 20kHz, Grille Dimensions (HxW) 9.9" x 13.7" (251mm x 349mm) Cutout Dimensions (HxW) 8.7" x 12.5" (221mm x 318mm) Mounting Depth 3.74in (95mm)