Alpine SXE-1726S coaxial speakers & PWE-S8 powered subwoofer bundle

Bundle contents and fit

This bundle pairs a compact powered 8-inch subwoofer with two pairs of 6.5-inch two-way coaxial speakers. The subwoofer measures 13.5 inches wide and 3 inches deep, so it fits under seats or in tight cargo areas of trucks, sedans and SUVs. The speakers mount in standard 6.5-inch door openings. Together they cover the full audible range for drivers who want a complete system in one purchase.

Power handling and enclosure limits

The built-in amplifier delivers 120 watts to the quad-coil subwoofer, while each coaxial speaker handles 40 watts RMS and 220 watts peak. Because the subwoofer enclosure is sealed and only 3 inches deep, output is tuned for accuracy rather than maximum sound-pressure level. The speaker frequency response spans 60 Hz to 20 kHz, so the lowest octave still relies on the subwoofer. Buyers who want chest-thumping bass at reference volumes will need a larger ported enclosure and external amplification.

Upgrade path from factory audio

This bundle replaces a typical OEM head-unit and paper-cone speaker setup that lacks dedicated low-frequency output. The jump is worth it when the factory system sounds thin at highway speed or distorts at moderate volume. If the vehicle already has a factory subwoofer or an aftermarket amplifier driving the front doors, the improvement will be less noticeable and a component-speaker upgrade with a separate amplifier may be the better next step.