A square sub woofer made by
the company Kicker. This sub woofer is a one way component speaker that produce only one frecuency, which is a low frecuency bass. Since the
introduction of the first Solo-Baric™ in 1992, the rest of the car audio world has been playing catch-up trying to develop drivers to match the Solo-Baric's amazing bass
performance in small enclosures...Nobody's come close!