Monoprice SW-15 600 Watt RMS 800 Watt Peak Powered Subwoofer – 15in, Ported Design, Variable Phase Control, Variable Low Pass Filter, for Home Theater

Price: $299.99
(as of May 16,2023 18:48:07 UTC – Details)

From the manufacturer

Powerful Amplifier: 600 Watts of Class D Power. Complete control. Use the easy access, rear panel controls to tune the bass to your preferences. The volume control and low pass filter allow you to blend the bass from the subwoofer into the sound from your main speakers. The phase control can compensate for subwoofer positioning and the power mode turns auto standby on or off.
Simple Hook-Up: Plug and Play. Use the RCA inputs to connect to a dedicated subwoofer output or to preamp outputs on your amp or use the speaker level inputs to connect to the speaker outputs, if your amp lacks subwoofer or preamp outputs.
Ported design.
30 ~ 150Hz frequency response.