Maximum : 200w Frequency response: 40Hz-400Hz. Applicable impedance: 4-8 ohm Application: low, subwoofer DIY Applicable speaker size: 5-10 inches Diagonal mounting holes: 9.5cm, adjacent angles mounting holes: 5cm : 200W (200W or less is available for the following 5 to 8 inches subwoofer). Circuit: Standard 12db / oct. Stubbs switch: adjustable range from about response: 3Hz. Colour:As shown Material:PCB Package Contents: 1 x Subwoofer Crossover Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. Pure Bass Audio Professional Subwoofer Frequency Divider Speaker Crossover Filter Subwoofer divider Dividing the total frequency signal of amplifier,Barrier to high-frequency signals,Bass and subwoofer through, After installation of the dividerFeeling more bass,The human voice smaller,No treble,Speaker sound smaller. This is normal, Woofer is not affected by the high-frequency signal interference, the intensity bigger.57 # large inductance,D16mm, H30mm speakers dedicated large current anode capacitance.