HEW10D4S

The Hifonics HEW10D4S is a 10-inch ELITE shallow mount subwoofer built for vehicles with no room for a conventional sub. Mounting depth is 3.00in behind a 9.06in cut-out, which brings it within reach of under-seat boxes, truck door builds, and slim trunk enclosures. It handles 300W RMS and 600W peak through dual 4-ohm voice coils, so it can be wired to a 2-ohm or 8-ohm final impedance.

The 2.5-inch high-temperature voice coil sits on a vented aluminum former that moves heat out of the motor, which matters most in the small sealed volumes shallow subs usually live in. A specialized Hifonics poly cotton spider resists softening and sagging over time, so power handling stays consistent after seasons of use. The lightweight woven fiber cone and dust cap respond quickly while holding their shape, and the UV-treated surround stays flexible instead of fading and stiffening in the sun.

Hifonics recommends a sealed enclosure. A 13in x 13in x 10in box gives roughly 0.65 cubic feet with an F3 of 54Hz, and an angled enclosure at the same volume matches that response for a truck cab. Terminals are stainless push-and-insert, nickel plated to resist corrosion and quick to connect during installation.

A powder-coated stamped steel basket anchors the motor and moving assembly and delivers output without taking over the cargo area. Sensitivity is 85dB (1W/1m). It replaces the BXS10D4 and carries a one-year warranty.