Technophonic 5-Channel Amplifier + R-TW84 Shallow-Mount Subwoofer Bundle

Technophonic 5-Channel Amplifier + R-TW84 Shallow-Mount Subwoofer Bundle Bring modern sound to your classic car or truck with this perfectly matched bundle. The RetroSound® Technophonic 5-Channel Class D Amplifier provides four full-range channels to power your speakers plus a dedicated subwoofer channel — making it the ideal partner for the ultra-thin R-TW84 8-inch Subwoofer. With only 2 inches of mounting depth, the R-TW84 fits where traditional subs can’t, delivering deep, accurate bass without compromising space. When paired with the Technophonic, you get a balanced, powerful system that combines clear highs, rich mids, and tight low-end response — all designed for easy integration into vehicles with limited room. This bundle is perfect for enthusiasts who want a complete, high-performance upgrade that preserves the original look and feel of their classic ride while enjoying the benefits of modern audio technology. Key Features The Technophonic provides a dedicated sub channel with enough headroom to drive the R-TW84 to its full potential, while also powering your main speakers. The R-TW84 has a mounting depth of just 2″, making it ideal for tight spaces under seats, behind panels, or in custom enclosures. The Technophonic uses full-range Class D digital circuitry for high dynamic range and low distortion. The sub output delivers 225 W RMS at 4 Ω (330 W RMS at 2 Ω) to your R-TW84. The R-TW84 sports a neodymium magnet, a rigid cast-aluminum basket, polypropylene cone, and Santoprene® surround for clean, durable bass output. Add extra low end where needed with the 0–12 dB bass boost, and adjust sub gain on the fly with the remote control from the front seat. Bundle Includes (1) RetroSound® R-TW84 Shallow-Mount 4-ohm Subwoofer (1) RetroSound® Technophonic 5-Channel Class D Amplifier R-TW84 Specifications Peak Power Handling: 500 Watt RMS Power Handling: 250 Watt Nominal Impedance 4 Ohm DC Resistance (Re):  3.5 Ohm Resonace Frequency (Fs): 33 Hz Frequency Range: 32~5000Hz Sensitivity: 88dB