B2 Audio X2C Competition 18" 10k Watts RMS Dual 1 Ohm Subwoofer B2-X2C-18-D1-V2

• EXTREME COMPETITION POWER: The B2 Audio X2C 18" subwoofer is built for serious SPL and demo builds with 10,000 watts RMS and 20,000 watts max power handling.
• DUAL 1 OHM CONFIGURATION: Dual 1 ohm voice coils give experienced installers flexible wiring options for high-power amplifier setups and competition-level systems.
• MASSIVE 5" VOICE COIL: Designed with a large 5-inch voice coil for serious thermal management, improved durability, and reliable performance under extreme power.
• DEEP LOW FREQUENCY OUTPUT: With a frequency range of 10 Hz to 150 Hz, this 18" subwoofer is engineered to deliver brutal low-end bass for high-output audio builds.
• BUILT FOR SPL BUILDS: Ideal for competition vehicles, wall builds, demo systems, and serious bass enthusiasts who need massive air movement and high-output performance.

B2 Audio X2C Competition Series 18" 10,000 Watt RMS Dual 1 Ohm Subwoofer

This listing includes:

• (1) X2C 18" Dual 1 Ohm Subwoofer

​The B2 Audio X2C 18" Dual 1 Ohm Subwoofer is built for extreme SPL competitors and serious bass builders who need brutal power handling, deep low-frequency output, and a motor structure that does not flinch under pressure.

Engineered for high-output competition systems, the X2C features a massive motor assembly, a large 5-inch voice coil, and serious thermal management to handle up to 10,000 watts RMS and 20,000 watts max power. With a frequency range down to 10 Hz, this 18-inch subwoofer is designed to move serious air and deliver the kind of low-end force that turns builds into legends.

Whether you are chasing meter numbers, hair tricks, or ground-shaking demo power, the X2C 18" is built for bass systems where average simply gets escorted out of the parking lot.

Features

• Competition-grade 18" SPL subwoofer


• Dual 1 Ohm voice coil configuration


• 10,000 watts RMS power handling


• 20,000 watts max power handling


• Massive 5" voice coil for extreme thermal control


• Designed for high-output SPL and demo builds


• Deep frequency response down to 10 Hz


• High motor force for powerful cone control


• Built for serious competitors and extreme bass enthusiasts

Specifications

• Frequency Range: 10 Hz – 150 Hz


• Impedance: Dual 1 Ohm


• RMS Power: 10,000 Watts


• Max Power: 20,000 Watts

Electrical Parameters

• Re (DC Resistance): 1.5971 ohms


• Le (Inductance @ 1 kHz): 3.7877 mH


• Zmax (Maximum Impedance): 27.2880 ohms


• BL (Motor Force Factor): 24.4398 N/A

Thiele/Small Parameters

• Fs (Resonant Frequency): 29.25 Hz


• Qes (Electrical Q): 0.4664


• Qms (Mechanical Q): 7.5029


• Qts (Total Q): 0.4391


• Vas (Equivalent Compliance Volume): 63.23 L (1.7327 ft^3)


• Cms (Compliance): 31.1905 M/N

Physical Characteristics

• Effective Diameter: 390.0000 mm  (15.3543 in)


• Sd (Cone Area): 119459.0554 mm^2 (185.1619 in^2)


• Mms (Moving Mass): 949.0932 g

Output & Efficiency

• Efficiency: 0.3188 %


• Sensitivity @ 1W/1m: 87.0536 dB


• Sensitivity @ 2.83Vrms/1m: 94.0512 dB

Accepted Payment Methods at Big Jeff Audio

At Big Jeff Audio, we strive to make your shopping experience as smooth as possible by offering a wide variety of payment options. Below is a complete list of the payment methods we accept:

Credit and Debit Cards

• Visa
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• American Express
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• Amazon Pay
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International Payment Methods

• Bancontact
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Bank Transfers

• Zelle

Financing Options

We also offer financing options to make purchasing easier. Learn more about our financing options here.

• Klarna
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• Sezzle
• Snap
• Acima
• Tiptop

If you have any questions or need assistance with payments, feel free to reach out to us at info@bigjeffaudio.com or call us at 737-BIG-JEFF.

Shipping Options and Delivery Time

Do You Offer Expedited Shipping?

Yes! At checkout, you can select from different shipping options:

• Standard Shipping: Free for orders over $100.
• Expedited Shipping: Available at an additional cost, calculated based on the weight and destination of your order.

How Long Does Delivery Take?

• Handling Time: Most orders are processed and shipped within 1 business day after receiving cleared payment. Occasionally, additional handling time may be required, but we’ll notify you if that’s the case.
• Standard Shipping: Typically takes 3-5 business days, though delivery may be affected by extreme weather or holidays.

What Happens If My Package Is Undeliverable?

If your package is refused or marked undeliverable and returned to us by the carrier, you’ll need to pay the full shipping cost to have the package resent. Alternatively, we can refund your order, minus the cost of shipping.

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