KICKER 2CH 125 W* Nominal Impedance [Zn], 2 ohms [per coil] * Resonance Frequency [fs], Hz 47.2 * Power Handling Watts, Peak (RMS) 900 (450) * Total Q-Factor [Qts] 0.644 * Equivalent Volume [Vas], ft3 (L) .36 (10.3) * Outer Frame Dimension, in (cm) 8 13/16 (22.4) * Mounting Depth, in (cm) 4 11/16 (11.8) The Solo-Baric generates more sound pressure than an equivalently-sized round speaker & excels when used in the recommended sealed boxes. These sealed enclosure designs give the smoothest response w/increased energy at the lowest frequencies, 20 to 30Hz. These designs deliver massive amounts of highly-accurate bass & can be driven w/punishing levels of amplifier power. The Solo-Baric high performance suspension system can operate in a larger sealed enclosure. This maximum enclosure volume application is ideal for SQ (ultra sound quality) installations. The SQ enclosure generates a very flat response curve & superbly extends the subbass response. Solo-Baric woofers perform well in any size sealed enclosure between the Compact & SQ volume recommendations. These systems will exhibit benefits of both designs: Compact produces high-impact bass, & SQ generates low bass frequency protraction. Overall, the system will sound more like the recommended enclosure design it is closest to in enclosure volume. These enclosure recommendations have been calculated w/the airspace inside the enclosure & include the displacement of the woofer. All sealed-enclosure airspace should be filled to 50% loose poly-fil (polyester fiberfill) stuffing. Do not make the airspace greater than the SQ, maximum enclosure volume, recommendation.. (Inv Code: W04)