DS18 PRO-CFX Two-Way Passive Crossover 300W Car Audio Tweeter Mid Range Speaker (2 Pack) Pack of TWO! 2-Way Crossover, High Frequency and Low Frequency. Crossover frequency at 3.5kHz. 300 Watt Power Handling. The crossover is housed in a steel casing, and the bottom is made of plexi-glass allowing a view of the inner components.Lower cover: Plastic Dimensions Inches: 6.5x3.5x1.5. Dimensions MM: 160x88x38. Slope: -12dB