DD Audio 18" Dual 4 Ohm 4800W Peak/1200W RMS Power Tuned Subwoofer 3518i-D4

• Exceptional Sonic Accuracy: Delivers a clear and impactful bass experience
• High-Energy Design: Ensures dynamic sound reproduction
• Robust Construction: Built for lasting performance
• Advanced Cooling Mechanisms: Maintain performance levels during extended use
• High Power Handling: Ideal for serious audio setups

DD Audio 18" Dual 4 Ohm 4800W Peak/1200W RMS Power Tuned Subwoofer 3518i-D4

This Listing Includes:

(1) DD Audio 3518i (ESP) 18 Inch Power Tuned Subwoofer

The DD Audio 3518i (ESP) is a pinnacle of sonic precision and raw power. This 18-inch subwoofer from the 3500 Series is designed for audiophiles seeking an unparalleled audio experience. It's engineered with a focus on low moving mass and utilizes a high-strength motor alongside advanced long gap/long coil topology, inspired by DD Audio's legendary 9500 and 9900 series. The subwoofer is equipped with V-ROM surrounds, multi-layer spiders, and 800-degree thermoset voice coils, housed in a sturdy cast aluminum frame. This combination delivers not only brutally accurate musical performance but also ensures durability and reliability for serious audio enthusiasts.

Specifications:

• Speaker Size: 18 Inches


• RMS Power: 600 - 1200 Watts


• Peak Power: 4800 Watts


• Impedance: Dual 4 Ohm


• Voice Coil Diameter: 3 Inches


• Piston Diameter: 15 1/2 Inches


• Fs: 28.9 Hz


• Qms: 5.4


• Qes: 0.97


• Qts: 0.83


• Vas: 146.2 Liters


• Xmech: 62 MM


• Xmax: 17.5 MM


• Frame Outer Diameter: 18 1/4 Inches


• Mounting Diameter: 16 3/4 Inches


• Mounting Depth: 10 7/8 Inches


• Motor Diameter: 7 9/16 Inches


• Motor Depth: 3 1/2 Inches


• Woofer Displacement: 0.38 CuFt


• Recommended Ported Enclosure: 5.0 - 6.0 CuFt


• Shipping Weight: 52 Lbs

Features:

• Low Moving Mass: For ultra-high energy and precise sound


• Powerful Motor: With long gap/long coil topology for enhanced performance


• V-ROM Surrounds: Ensuring durability and audio clarity


• Multi-Layer Spiders: Supporting powerful bass reproduction


• 800-Degree Thermoset Voice Coils: For superior thermal handling


• Cast Aluminum Frames: Adds to the longevity and reliability

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.