DD Audio 18" USA Built Dual 2-Ohm 3.35” Voice Coil 2500-Watt RMS Subwoofer 9518L

• Exceptional Power: 2500W RMS, 7500W peak, delivering powerful and precise bass.
• Advanced Cooling System: Dual Stage Heat Sink and Free Flow Cooling prevent overheating.
• Premium USA-Made Components: Features a 5-layer voice coil, cone, and dust cap.
• Enhanced Excursion: 2nd Gen V-ROM surround maximizes movement for deeper bass.
• Durable Build: Iron Cloth Spider System ensures long-term reliability.
• Optimized Dimensions: 16 3/4" mounting diameter and 11 5/16" depth for easy installation.
• Large Enclosure Compatibility: Designed for ported enclosures of 5.0–6.0 cu. ft.
• 2-Ohm Configuration: Versatile setup for a range of amplifiers.

DD Audio 18" USA Built Dual 2-Ohm 3.35†Voice Coil 2500-Watt RMS Subwoofer 9518L

This Listing Includes:

• (1) DD Audio 18" 2-Ohm, 2500 RMS/7500 Peak USA Built Subwoofer

The 18-inch DD Audio 9500L Series subwoofer embodies cutting-edge innovation and premium craftsmanship, making it the ultimate choice for car audio enthusiasts. Equipped with industry-leading features like the Dual Stage Heat Sink and Iron Cloth Spider System, this subwoofer is built to handle rigorous conditions while delivering top-tier sound clarity. The second-generation V-ROM surround and massive piston diameter enhance excursion and surface area, delivering an unparalleled bass experience. With 2500W RMS and 7500W peak power, this subwoofer offers both power and precision, suitable for competitive or high-demand systems. Its robust construction and compatibility with ported enclosures of 5.0–6.0 cu. ft. make it a versatile choice for professionals and audiophiles alike.

Key Features

• NEW Aluminum 2 Stage Motor Heatsink


• 230mm Magnet Diameter


• Multi-Vent Free Flow Cooling Motor


• Shorting Ring Motor


• 3.35†High-Temp Voice Coil


• Excursion Optimized ESP Frame


• V-ROM Vario-Density Surround


• Non-Pressed Composite Reinforced Pulp Cone


• Dual/Triple Layer Iron Cloth Spider


• Laminated Tinsel Leads


• Handmade Composite Dust Cap


• Embossed DDesign Magnet Boot


• Made In USA

Specifications

• Speaker Size: 18 inches


• Watts RMS: 2500


• Watts Peak: 7500


• Impedance: Dual 2-ohm


• Voice Coil Diameter (VCD): 3.35 inches


• Piston Diameter: 15 1/2 inches


• Resonant Frequency (Fs): 30.95 Hz


• Qms: 6.293


• Qes: 0.808


• Qts: 0.716


• Vas: 97.92 liters


• Xmech (Maximum Excursion): 62 mm


• Xmax (Linear Excursion): 21 mm


• Frame Outer Diameter (OD): 18 1/4 inches


• Frame OD with Gasket: 18 1/2 inches


• Mounting Diameter: 16 3/4 inches


• Mounting Depth: 11 5/16 inches


• Motor Diameter: 9 5/16 inches


• Motor Depth: 4 5/8 inches


• Woofer Displacement: 0.44 cu. ft.


• Recommended Ported Enclosure: 5.0–6.0 cu. ft.


• Shipping Weight: 79 lbs

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.