SS-V315 Satellites: Poly bass-reflex enclosure with a non-removable metal grille. The enclosure is gray; the grille is gray. One 2"x4" full-range cone driver and spring clip speaker terminals.       Specifications:Dimensions: W = 2.681", H = 5.909", D = 5.005"Rated impedance: 8 ohmsPower handling capacity: Maximum input power 100 wattsSensitivity: 87dB (1W, 1m)Frequency range: 90-20,000 Hz (no dB variation given)Weight: Approximately 1lb 10ozSS-CN315 Center Channel: Poly bass-reflex enclosure with a non-removable metal grille. The enclosure is gray; the grille is gray. Two 2"x4" full-range cone drivers and spring clip speaker terminals.       Specifications:Dimensions: W = 11.819", H = 2.683", D = 5.005"Rated impedance: 8 ohmsPower handling capacity: Maximum input power 120 wattsSensitivity: 89dB (1W, 1m)Frequency range: 90-20,000 Hz (no dB variation given)Weight: Approximately 3lbs 5ozSA-WMS315 Powered Subwoofer: Small powered, bass reflex subwoofer. The front of the enclosure has a non-removable gray cloth grille, a Poly front, and a particle-board body covered by dark gray vinyl.  There are 4 rubber feet on the bottom of the subwoofer.    Specifications:Power output: 75 wattsDriver: Single 6-3/8" coneFrequency range: 28-200 Hz (No dB variation given)Power consumption: 70 watts    Front panel controls:Power On/Off (small green LED illuminates when power is on).Level: Rotary control, from minimum to maximum, used to match woofer level to that of main speakers.Movie/Music mode switch    Rear input/outputs :Single mono RCA input and a single RCA mono output.Left and Right, positive and negative spring clip speaker level inputs.Left and Right, positive and negative full-range speaker level outputs.Satellite Mounting ApplicationsSS-V315 Satellites: They have a threaded insert on the rear for wall mounting on an M5 screw (screw not included) and for use with optional Sony stands (WS-FV10 ,WS-TV10 and WS-WV10).Center Channel Speaker: The included rubber feet allow the center channel to be placed firmly on top of your television.