Ground Zero Universal Kickwoofer-Crossover 87.06 EUR Available BUY Article Number: GZRX 2 WAY KICK Share Information Reviews 2-Way & Kick-Crossover Universal Kickwoofer-Crossover, to add any Kickwoofer to an exsisting Speakersystem. Highpass-Filter 90 / 150 Hz Lowpass-Filter 200 / 250 Hz.