Refurbished SUNDOWN AUDIO SFB-200.4D   "SOLD AS IS, NO WARRANTY, ALL SALES FINAL."     Sundown Audio SFB 200.4 Features: High Efficiency Digital Multi-Channel Design 12 dB/Octave – Variable Low Pass Filter 12 dB/Octave...

The DOWN4SOUND TCX 10” Subwoofer D2 is a deep-hitting, small-frame sub engineered for demanding applications. With a 3" 8-layer flat aluminum voice coil, carbon fiber cone, and 5-stack Y35 motor, it’s optimized for thermal efficiency and...

The DOWN4SOUND TCX 18” Subwoofer D2 is built for extreme output, heavy power handling, and clean low-end delivery. With a 3" 8-layer flat aluminum coil, carbon fiber cone, stitched high-roll surround, and oversized...

The DOWN4SOUND TCX 15” Subwoofer D2 is engineered for high-performance bass with long-lasting durability. Whether you're building a street banger or a demo wall, the TCX-15 D2 delivers aggressive output with clean, deep low-frequency response...

The DOWN4SOUND TCX 18” Subwoofer D2 is built for extreme output, heavy power handling, and clean low-end delivery. With a 3" 8-layer flat aluminum coil, carbon fiber cone, stitched high-roll surround, and oversized 5-stack Y35 motor, this sub was...

The DOWN4SOUND TCX 15” Subwoofer D1 is built to crush, tuned for control, and engineered for daily or demo use. It features a 3" 8-layer flat aluminum voice coil, carbon fiber cone, stitched surround, and triple-spider suspension system. With a...

The DOWN4SOUND TCX 10” Subwoofer D1 is built for tight spaces, big pressure, and maximum control. It features a 3-inch 8-layer flat aluminum voice coil, high-roll stitched surround, and a carbon fiber cone backed by a 5-stack Y35 ferrite motor...

Insure reliable electrical connections and prevent fraying and breaking of wire strands when terminating conductors in screw clamp terminal blocks. Uninsulated ferrules prevent wire strands from fraying and breaking and are extremely cost effective...

The Down4Sound D4S-AX5S is engineered for car audio enthusiasts who want direct digital crossover control without complicated software. Unlike DSP processors that require apps or laptops, the AX5S gives you hands-on knob-based precision, letting you tune...

The Down4Sound HiLoc7i 7-Channel Line Output Converter is the easiest way to add aftermarket amplifiers and subwoofers to your factory stereo. Engineered for clean integration, the HiLoc7i accepts your OEM high-level (speaker) signals and delivers strong...

The Down4Sound D4S-XP28 DSP is engineered for those who want total control over their system. Designed with installers and competitors in mind, the XP28 gives you 2 inputs and 8 outputs, paired with precision tuning tools that go far beyond basic...

Take full command of your car audio system with the Down4Sound XPS610 DSP Processor. Designed for enthusiasts who want power and flexibility, the XPS610 gives you 6 switchable RCA/High-Level inputs and 10 RCA outputs, letting you build and fine-tune the...