Kicker CS Series CSC68 Enclosed Subwoofers The set screws are tightened/loosened

The set screws are tightened/loosened with the included 2mm Allen wrench

5 and 4 ohms

20 Hz - 20 kHz noise bandwidth) Damping Factor @ 4 ohms >150 / 50 Hz Damping Factor @ 2 ohms >75 / 50 Hz THD+N @ Rated Power (Main Channels) <1% @ 2 ohms per Ch

and Frequency Tuning

Kicker CS Series CSC68 Enclosed Subwoofers The set screws are tightened/loosenedCS Series CSC68 CS Series 6x8 inch Coaxial Speakers are the perfect way to upgrade your factory system. CS Series Coaxials deliver remarkable performance and ultra clean bass with a heavy duty motor magnet structure not found in stock speakers. A stamped steel frame supports a rigid polypropylene cone with EVC (Extended Voice Coil) technology for the best sonic quality. Using zero protrusion PEI tweeters with neodymium magnets, you get the clarity you