JL Audio M-RBC-1 Powersport Subwoofers along with output polarity control

along with output polarity control switch

Studio-grade signal processing features include high or low-pass 12 dB / octave filters (defeatable) for each channel pair

50 in / 140 mm Internal Slot Port Height (SH) 2

54 in / 14 mm Frontal Grille Protrusion (E) N/A Mounting Hole Diameter (F) 3

JL Audio M-RBC-1 Powersport Subwoofers along with output polarity controlWater Resistant Remote Level Control for MX Monoblock Amplifiers or any JL Audio Monoblock with a Remote Bass Control port. The M RBC 1 controls the Bass Level and features a water resistant connection cover designed for use with the following JL Audio amplifiers: MX Series: MX300 1 (in Low Pass Mode) MX Series: MX500 1 (in Low Pass Mode) MX Series: MX600 3 (Subwoofer Channel) HX Series (discontinued): HX300 1 (in Low Pass Mode) MHX Series