The Pioneer TS-A250D4 is a 10-inch car subwoofer with dual 4-ohm voice coils, so it can be wired as a 2-ohm or 8-ohm load depending on the amplifier. Its glass-fiber and mica reinforced IMPP cone, butyl rubber surround and aramid fiber spider are built for long, linear excursion, and a 56 oz double-stacked magnet with a vented pole piece handles the power. It suits drivers who want strong, controlled bass from a compact sealed or ported box and who plan their wiring around the coil configuration. Compared with single-coil 10-inch subs, the dual coils give more amplifier-matching flexibility, but it needs a capable amp and a proper enclosure to sound its best.
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Owners rate it well overall, praising the bass output and build for the money. Some note it needs a solid amplifier and a well-built box to perform, and a few found wiring the dual coils less straightforward than expected.
The Pioneer TS-A250D4 is a 10-inch component subwoofer from the A-series. It has dual 4 ohm voice coils and is rated for 400 watts nominal (RMS) and 1,300 watts maximum power. The A-series is designed to match the subwoofer acoustically with Pioneer full-range loudspeakers.
The cone is injection-molded polypropylene (IMPP) blended with glass fiber and mica for rigidity and strength at low mass. A butyl rubber surround and an aramid fiber spider support the cone through high excursion. The motor has an oversized 56 oz double-stacked strontium magnet and a vented pole yoke for power handling and heat dissipation. A large copper voice coil on an aluminum former helps control the cone at high excursion.
It supports Pioneer's CarSoundFit app, a free smartphone car sound simulator for hearing Pioneer speaker upgrades.
