As one of its daily deals, Best Buy offers the Polk Audio 10" Dual-Voice-Coil Car Subwoofer
, model no. DXi104 DVC, for $29.99
with free shipping
. That ties our November mention and is the lowest total price we could find now by $60. Sales tax is added where applicable. This 10" dual-voice-coil subwoofer features a 28Hz to 200kHz frequency response, 540-watt peak power handling, polymer woofer cone, 8 ohm impedance, and more. Deal ends today.