The CS-16W features a 6.5” Polymer woofer and a 1” Polymer tweeter. Utilizing Klipsch Patent-Pending SkyHook™ Tool-Free Installation System by Swarm technology, your install time is reduced by 75%. Frequency Range: 65Hz – 20kHz +/- 3dB 1″ (2.54cm) Polymer Dome Tweeter, 6.5” (16.51cm) Polymer Woofer, 91 dB @ 2.83V / 1m40W RMS / 160W Peak, 8 Ohm Compatible, CUTOUT DIMENSIONS 13” H X 8” W (33.0cm H X 20.3cm W), MOUNTING DEPTH 3.78” (9.6cm)