Maxxsonics MB Quart RK1-169 Reference Car Speakers (Black, Pair) – 6x9 Inch Coaxial Speaker System, 200 Watt, 2-Way Car Audio, 4 OHMS (Grills Included)Pair of MB Quart RK1 169 Reference Car Speakers in black color 6x9 inch coaxial speaker system with 2 way car audio design Features 1 inch aluminum dome tweeter and a 6x9 inch composite poly cone woofer Has a power handling of 200 watts and an RMS of 100 watts Impedance of 4 OHMS and sensitivity of 90 dB Item Number: RK1 169 Dimensions: 15. 94 x 11. 34 x 4. 33 inches Weight: 5. 37 lb Found in 2001 by Alden Stiefel and a handful of consumer electronics