12" 1243 Ultra Subwoofer

Build your next custom bass setup around the TrueBass TBS 1243 DV Ultra 12-inch subwoofer. With a 3-inch voice-coil inside diameter, dual 4-ohm voice coils and power handling of 600 watts RMS / 1,400 watts peak, this standalone ULTRA-series driver gives you a defined starting point for planning your enclosure, amplifier and wiring.

Picture your favorite tracks with a dedicated 12-inch woofer handling the low end. Whether you are replacing a driver or starting a fresh build, begin with your available space and plan the enclosure and amplification together. Sold individually without an enclosure.

Driver Size & Model

Nominal 12-inch subwoofer. TrueBass ULTRA series, TBS 1243 DV Ultra.

Voice-Coil Inside Diameter

3 inches.

Impedance

Dual voice coils: 4 ohms per coil (4 / 4 ohms). Final wired impedance depends on your wiring configuration. Match it to your amplifier's supported load.

Power Handling (RMS / Peak)

600 watts RMS / 1,400 watts peak per subwoofer. Use the RMS rating when planning compatible amplification; peak handling is not a continuous-power rating.

Woofer & Magnet Weight

Total woofer weight: 21 lbs, including the magnet. Magnet weight: 180 oz per woofer (one 180 oz magnet). The magnet is included in the total woofer weight, not added on top. Packed shipping weight: 22 lbs.

What's Included

One standalone subwoofer. Enclosure not included.

Enclosure Planning

The existing dual 12-inch system uses a complete enclosure measuring 32 inches wide × 16 inches high × 14 inches deep, with 3.2 cu. ft. gross internal volume before woofer and port deductions. These are complete two-woofer box specifications, not dimensions or a recommended enclosure volume for this individual driver.

Before You Order

• Confirm mounting depth and cutout dimensions rather than relying on nominal driver size alone.
• Request recommended single-driver enclosure volume, enclosure type and tuning before building your box.
• Match your amplifier to the RMS power rating and final wired impedance.

Contact TrueBass Solutions with your vehicle details, available enclosure space and amplifier information for help planning your setup.