Today only, Sonic Electronix takes up to 68% off select items in car audio, headphones, musical instruments, home & outdoor, and more during its Cyber Monday Sale. With free shipping on each order, it trumps our mention of its Black Friday sale, which offered up to 50% off, as the biggest sale we've seen from Sonic Electronix this year.

A best bet is the Audiobahn 100-watt 10" Bass Cylinder Subwoofer, model no. ATB10AJ, for $99.99 with free shipping. That's the lowest total price we could find by $49. It features a chrome-plated flame grille, RCA and speaker level inputs, frequency response of 40Hz to 250Hz, adjustable bass boost from 0dB to 18dB, and more.