DS18 12" 3500W RMS Dual 1-Ohm Carbon Fiber Car Subwoofer CARBON12.1D

• 3500 WATTS RMS POWER HANDLING: Built for demanding car audio systems, this 12-inch subwoofer handles 3500 watts RMS and up to 7000 watts maximum power.
• HIGH-EXCURSION BASS PERFORMANCE: Provides up to 22.5mm of one-way excursion to move serious air and produce powerful low-frequency output.
• CARBON-FIBER CONSTRUCTION: A rigid carbon-fiber cone and matching 6-inch dust cap provide controlled response and dependable performance under heavy use.
• DUAL 1-OHM VOICE COILS: Flexible wiring options make it easier to match the subwoofer with compatible high-powered car audio amplifiers.
• BUILT FOR HIGH-POWER SYSTEMS: Features a 3.5-inch voice coil, improved heat dissipation, 4-gauge terminals, an aluminum basket, and a massive 425-ounce ferrite magnet.

DS18 12" 3500W RMS Dual 1-Ohm Carbon Fiber Car Subwoofer CARBON12.1D

This Listing Includes:

• (1) DS18 CARBON12.1D 12" High-Excursion Car Subwoofer

Built for serious output, the DS18 CARBON12.1D delivers powerful, vehicle-shaking bass with 3500 watts RMS and 7000 watts maximum power handling. Its high-excursion design provides up to 22.5mm of one-way cone movement, allowing the subwoofer to move large amounts of air and produce forceful low-frequency output.

The carbon-fiber cone and dust cap provide the strength and rigidity needed to maintain controlled performance under demanding conditions. A 3.5-inch voice coil with an aluminum former, improved heat dissipation, and a massive 425-ounce ferrite magnet help support dependable performance during extended high-power use.

Dual 1-ohm voice coils provide flexible wiring options for compatible high-output amplifiers. Heavy-duty 4-gauge push terminals accommodate oversized speaker wire for a secure connection. The cast-aluminum basket, foam surround, and crossed spider leads complete a durable platform designed for powerful car audio systems.

Features:

• High-excursion 12-inch car subwoofer


• 3500 watts RMS power handling


• 7000 watts maximum power handling


• Dual 1-ohm voice coils


• Carbon-fiber cone and dust cap


• 22.5mm one-way excursion


• Improved heat-dissipation design


• 3.5-inch voice coil with aluminum former


• Heavy-duty 4-gauge push terminals


• Cast-aluminum basket


• Large 425-ounce ferrite magnet


• Compatible with sealed and ported enclosures

Specifications:

• Brand: DS18


• Model: CARBON12.1D


• Product Type: High-Excursion Car Subwoofer


• Nominal Diameter: 12 inches / 305mm


• Voice-Coil Configuration: Dual 1 Ohm


• Nominal Impedance: 1 + 1 Ohm


• RMS Power Handling: 3500 Watts


• Maximum Power Handling: 7000 Watts


• Sensitivity: 82dB at 1W/1m


• Frequency Response: 10Hz to 200Hz


• Recommended Low-Pass Crossover: 60Hz


• Cone Shape: Conical


• Improved Heat Dissipation: Yes


• Speaker Terminals: 4-gauge push terminals

Motor Specifications:

• Voice-Coil Diameter: 3.5 inches / 89mm


• Voice-Coil Former Material: Aluminum


• Voice-Coil Winding Material: CCAR


• Cone Material: Carbon fiber


• Dust-Cap Material: Carbon fiber


• Dust-Cap Diameter: 6 inches / 150mm


• Surround Material: Foam


• Spider Diameter: 9 inches / 228mm


• Lead Connection Type: Crossed through spider


• Basket Material: Aluminum


• Basket Color and Finish: Black aluminum


• Magnet Material: Ferrite


• Magnet Weight: 425 ounces

Thiele and Small Parameters:

• Equivalent Compliance Volume, Vas: 15.8L / 0.557 cubic feet


• One-Way Excursion, Xmax: 22.5mm


• Free-Air Resonance, Fs: 38Hz


• Mechanical Q, Qms: 4.878


• Electrical Q, Qes: 0.816


• Total Q, Qts: 0.699


• Moving Mass, Mms: 349.305g


• Compliance, Cms: 50.114mm/N


• BL Factor: 14.3


• Voice-Coil Inductance, Le: 0.98mH


• Diaphragm Area, Sd: 471.4cm


• DC Resistance, Re: 1 + 1 Ohm


• Efficiency Bandwidth Product, EBP: 46.5

Recommended Enclosures:

• Sealed Internal Volume: 37L / 1.3 cubic feet


• Sealed Enclosure Output Response: 38Hz


• Ported Internal Volume: 56.6L / 2.0 cubic feet


• Square Port Dimensions: 2" W x 12" H x 20.7" L


• Port Tuning Frequency: 35Hz


• Ported Enclosure Output Response: 27Hz

Measurements:

• Overall Diameter: 12.8 inches / 326mm


• Overall Depth: 11.65 inches / 296mm


• Front Mounting Baffle Cutout: 11.15 inches / 283mm


• Mounting Depth: 9.75 inches / 248mm


• Motor Diameter: 9 inches / 230mm

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
• Mastercard
• American Express
• Discover
• Diners Club

Digital Wallets

• Amazon Pay
• Apple Pay
• Meta Pay (formerly Facebook Pay)
• Google Pay
• Shop Pay
• PayPal

International Payment Methods

• Bancontact
• iDEAL

Bank Transfers

• Zelle

Financing Options

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

• Klarna
• Affirm
• 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.

Why Can’t I Track My Order?

If you're having trouble tracking your order:

• Make sure you’ve received the shipping confirmation email with the tracking number.
• Log into your account on our website and use the “Check Your Order Status” button.
• If the issue persists, please refer to our detailed guide on tracking your order or contact our customer service team for further assistance.