The DOWN4SOUND Bass Max Pro Gray is a bass restoration processor designed to recover lost low-frequency content and restore deeper, more powerful bass in car audio systems. Many factory radios, streaming sources, and compressed music formats reduce bass...

The DOWN4SOUND Bass Max Pro Teal is a bass restoration processor designed to recover lost low-frequency content and restore deeper, more powerful bass in car audio systems. Many factory radios, streaming sources, and compressed music formats reduce bass...

The DOWN4SOUND Bass Max Pro Green is a bass restoration processor designed to recover lost low-frequency content and restore deeper, more powerful bass in car audio systems. Many factory radios, streaming sources, and compressed music formats reduce bass...

The DOWN4SOUND Bass Max Pro Orange is a bass restoration processor designed to recover lost low-frequency content and restore deeper, more powerful bass in car audio systems. Many factory radios, streaming sources, and compressed music formats reduce...

The DOWN4SOUND Bass Max Pro Red is a bass restoration processor designed to recover lost low-frequency content and restore deeper, more powerful bass in car audio systems. Many factory radios, streaming sources, and compressed music formats reduce bass...

The DOWN4SOUND Bass Max Pro Black Gloss is a bass restoration processor designed to recover lost low-frequency content and restore deeper, more powerful bass in car audio systems. Many factory radios, streaming sources, and compressed music formats...

The DOWN4SOUND Bass Max Pro White Gloss is a bass restoration processor designed to recover lost low-frequency content and restore deeper, more powerful bass in car audio systems. Many factory radios, streaming sources, and compressed music formats...

The DOWN4SOUND Bass Max Pro Blue is a bass restoration processor designed to recover lost low-frequency content and restore deeper, more powerful bass in car audio systems. Many factory radios, streaming sources, and compressed music formats reduce bass...

The DOWN4SOUND HI-LOW 2i is a compact 2-channel high-to-low line output converter designed to integrate factory audio systems with aftermarket amplifiers. It converts high-level speaker signals from an OEM head unit into a clean low-level RCA output,...

These are our in-line crossovers designed for the UN1 and other compression drivers. Designed with a 3.5khz High pass 12db/oct slope, they are a perfect match to get the most out of your UN1's Available in 8 ohm...

Down4sound D4S DW1ST- replacement diaphragm - 8 OHM sold each

Installation Notes: This unit comes equipped with a smaller 1.75 inch diameter alternator pulley, and will require a slightly shorter drive belt for proper belt tension. Not recommended for sustained use above 5,000 RPM engine speed. The Elite series...