Dayton Audio 2.7k/3.8k Hz 2-Way Crossover Board Three 250V polypropylene capacitors One 18 AWG air core inductor and an 18 AWG multi-t 4&amp;Omega; and 8&amp;Omega; woofer settings for In 4&amp;Omega; setting, one inductor tap is used In 8&amp;Omega; setting, two equal value inductor