Amazon.com: PRV AUDIO Low Pass Crossover 1DF180B Low-Pass Filter for Speaker and Subwoofer Crossover Point at 180 Hz with Unique Selectable Features : Electronics
What Should I Set My Low Pass Filter To?
Iwistao Low-pass Filter Finished Board Subwoofer Crossover Board Deep Bass Single Supply Dc10-24v For 2.1 System Free Shipping - Speaker Accessories - AliExpress