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DD Audio 15" Dual 4 Ohm 4800W Peak/1200W RMS Power Tuned Subwoofer 3515i-D4

SKU DD-3515I-D4
Sold out
Original price $998.99
Original price $998.99 - Original price $998.99
Original price $998.99
Current price $799.00
$799.00 - $799.00
Current price $799.00

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  • Precision Audio Reproduction: The subwoofer offers exceptional sonic accuracy, delivering a clear and impactful bass experience with minimal distortion, ensuring every note is heard as intended
  • Dynamic High-Energy Design: Engineered for dynamic sound reproduction, this subwoofer uses a high-strength motor combined with advanced voice coil technology to provide a powerful and energetic bass response
  • Durable and Reliable Construction: Featuring a robust build with a cast aluminum frame, multi-layer spiders, and V-ROM surrounds, this subwoofer is designed for lasting performance under rigorous conditions
  • Enhanced Thermal Management: Equipped with advanced cooling mechanisms, including 800-degree thermoset voice coils and a heat-dissipating design, the subwoofer maintains optimal performance levels during extended use
  • Superior Power Handling Capacity: Ideal for serious audio setups, this subwoofer has a high power handling capacity of 600 to 1200 watts RMS, making it capable of handling intense bass without compromising on sound quality

DD Audio 15" Dual 4 Ohm 4800W Peak/1200W RMS Power Tuned Subwoofer 3515i-D4

This Listing Includes:

  • (1) DD Audio 3515i (ESP) 15 Inch Power Tuned Subwoofer

The DD Audio 3515i (ESP) stands as a testament to sonic excellence, combining precise engineering and exceptional sound quality. This 15-inch subwoofer is a standout in the 3500 Series, renowned for its accuracy and ultra-high energy performance. Crafted with a focus on low moving mass and a powerful motor, this subwoofer employs long gap/long coil topology inspired by DD Audio's revered 9500 and 9900 series. It features V-ROM surrounds, multi-layer spiders, high-temperature thermoset voice coils, and robust cast aluminum frames. These elements synergize to create a subwoofer that not only delivers brutally accurate musical performance but also stands as a durable and reliable option for serious audio enthusiasts.


  • Speaker Size: 15 Inches

  • RMS Power: 600 - 1200 Watts

  • Peak Power: 4800 Watts

  • Impedance: Dual 4 Ohm

  • Voice Coil Diameter: 3 Inches

  • Piston Diameter: 14 1/4 Inches

  • Fs: 41 Hz

  • Qms: 7.1

  • Qes: 1

  • Qts: 0.88

  • Vas: 56.86 Liters

  • Xmech: 62 MM

  • Xmax: 17.5 MM

  • Frame Outer Diameter: 16 5/8 Inches

  • Mounting Diameter: 15 3/16 Inches

  • Mounting Depth: 9 5/8 Inches

  • Motor Diameter: 7 9/16 Inches

  • Motor Depth: 3 1/2 Inches

  • Woofer Displacement: 0.29 CuFt

  • Recommended Ported Enclosure: 3.0 - 6.0 CuFt

  • Shipping Weight: 43 Lbs


  • 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

Payment Information


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All orders over $500 will require a signature for delivery.

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valid residential or commercial address within the Contiguous 48 United
States (PO Boxes address may require additional charges).

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U.S. Virgin Islands, Northern Mariana Islands, American Samoa, Canada,
and other countries may require additional shipping fees. Please contact
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Typical handling time for orders is 1-business day. We do our best
to ship every package with-in 1 business day of receiving a cleared
payment. In some circumstances additional time may be need, in which
case we will contact buyer.

Shipped orders that are returned by the shipping company due to an
insufficient address or an undeliverable address will be refunded less a
20% restocking fee.

If package is refused or marked undeliverable and returned
back to us by the carrier, you will need to pay the shipping cost in
full to have the package sent back to you or we can refund the money
minus the cost of shipping


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please do the following within 36 hours of expected, stated delivery:


Verify the shipping address on the order is the address where you are looking for the package

Look for a notice of attempted delivery

Look around the delivery location for the package, or see if a neighbor has accepted the delivery

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If you think that your package has been stolen, we will require a police report since this is now theft.
Once we have a police report on file for the stolen package, we will reship your order.

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