Boston Acoustics5.1-channel Black Classic Series Home Theater Speaker System CS2310B (Black)

Power rating: 10W - 150W, CS23 and CS223C / 100W built-in amplification, CSSUB10
Impedance: 8 ohms, CS23 and CS223C
Tweeter: Single 1.0" Kortec soft-dome tweeter, CS23 and CS223C
Midrange: Single 3.5" graphite-injected polymer driver with Deep Channel Design, CS23 / Dual 3.5" drivers with DCD, CS223C
Woofer: Single 10" graphite-injected polymer woofer with Deep Channel Design, CSSUB10 / Down-firing design
Crossover: 2700Hz, CS23 and CS223C / 40HZ - 180Hz, CSSUB10
Frequency response (±3dB): 120Hz - 20kHz, CS23 / 100Hz - 20kHz, CS223C / 32Hz - 150Hz, CSSUB10
Cabinet design: Bass reflex design with acoustically tuned port, all
Magnetic shielding: MagnaGuard magnetic shielding, all