"The ATC C1 subwoofer is a 250 watt sub. The C1 sub has a specially modified 9"" super linear magnet driver and has gold plated high and low level inputs. It also has phase adjustment, gain control, and a low pass filter selection. This sub is a real winner with its amazing range to produce a realistic sound from those low frequencies all the way up the spectrum. The sub uses a hand wound short voice coil with high density edge wound flat OFC wire in a long narrow magnetic gap. This will give you less distortion, higher power handling and long term reliability. A great sub with a clean look and a great deal.Don't Forget about our 1 year full value trade-up policy! Email us for more information! Call fo special pricing. "