2Pcs 400W Adjustable Speaker Crossover 2 Way Treble/Bass 2 Unit Audio Frequen…
400W Ajustable Multi Speaker Treble / Bass 2 Unit Audio Frequency Divider 2 Way Crossover Filters. First connect as per our diagram above (Treble, Low, Input), connect to speaker, seal air gap, we can begin to hear music while optimize.