Bass Stopper Inline Crossover 600 Hz/300 Hz<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Frequency blocked: 0 to 600 Hz at 4 ohms， 0 to 300 Hz at 8 ohms</li><li>6 dB per octave roll-off</li><li>Power handling: 150 watts</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41M3DkO1I6L.jpg" noproxy>