Black Diamond 18" High Excursion Subwoofer with Carbon Fiber Cone | 3500W RMS / 7000W Peak | Dual 1-Ohm Voice Coil

Black Diamond 18" High Excursion Subwoofer with Carbon Fiber Cone | 3500W RMS / 7000W Peak | Dual 1-Ohm Voice Coil

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Build around accurate product information with the Black Diamond 18" High Excursion Subwoofer with Carbon Fiber Cone | 3500W RMS / 7000W Peak | Dual 1-Ohm Voice Coil. This DS18 18-inch car audio subwoofer should be selected by its exact DS18 model, listed features, and intended application—not by one keyword or headline number alone. The product title identifies 18-inch size, 3500 watts RMS in the product title, and 1-ohm impedance; use the full product details below for the exact model specifications and installation requirements.

Before ordering, review the full original product details and compare them with the available space, connected equipment, wire and fuse needs, vehicle fitment, and future system plans.

Original Product Details and Specifications

Black Diamond DIA-CARBON18.1D
18" High Excursion Subwoofer with Carbon Fiber Cone | 1-Ohm

The DIA-CARBON18.1D delivers earth-shaking bass with 3500W RMS and a peak of 7000W. This 18-inch sub moves massive air for SPL competitions and serious audio enthusiasts.

Lightweight Carbon Fiber
Its ultra-rigid carbon fiber cone and dust cap reduce distortion and improve responsiveness, delivering clear, tight lows even at extreme volumes.

True High-Excursion Design
With an impressive 22.5mm Xmax, the DIA-CARBON18.1D provides deeper cone travel for louder output and immersive, chest-thumping bass.

Engineered to Stay Cool Under Pressure
Massive 3.5" dual aluminum CCAR voice coils and pro-grade motor structure with advanced heat dissipation keep your subwoofer running strong through long, loud sessions without thermal shutdown.

Built Tough for High Performance
Featuring a 425 oz ferrite magnet, sandblasted aluminum basket, foam surround, and heavy-duty 4GA push terminals, this subwoofer is engineered for reliability and powerful SPL builds.

Versatile Enclosure Recommendations
Optimal performance in sealed (3.2 ft³) or ported (7.5 ft³ with 4"x18"x20" port) boxes, allows you to build the way you prefer.

Dominate any venue with Black Diamond’s DIA-CARBON18.1D!

Match This DS18 Subwoofer to the Amp and Enclosure

Choose the amplifier from RMS power and final wired impedance, not maximum power alone. The enclosure must also match the exact subwoofer's air-space, tuning, cutout, mounting-depth, and port requirements. Confirm voice-coil configuration, number of subwoofers, speaker wire, vehicle space, and electrical support before ordering.

Compare more car audio subwoofers, choose a compatible monoblock subwoofer amplifier, and review the available subwoofer boxes and enclosures.

Helpful Subwoofer and Bass-System Guides

Use the subwoofer wiring and ohm-load guide, compare 1-ohm, 2-ohm, and 4-ohm systems, learn how to choose a box with the subwoofer enclosure guide, and plan the complete build with the car audio bass setup guide.

Browse the full DS18 collection at Audio Sellerz to compare other DS18 speakers, amplifiers, subwoofers, marine products, vehicle-specific audio parts, wiring, and accessories.

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