Black Diamond DIA-T15.4D: 15" 4 ohm Dual Voice Coil 2000 Watt Subwoofe — Big Jeff Audio Dealer Platform
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Welcome To The Dealer Platform


  • High Quality Design- Black Diamond utilizes only the best materials to provide you with high quality sound you can trust
  • Dual Voice Coil (DVC)- provides flexible options to wire parallel, series, or independent
  • Powerful Sound- With 2000W max power and 1000W RMS, you will finally realize what big, rich bass sounds like
  • Ultra-Reliable Subwoofer- Settle for nothing but the best with ferrite magnets that produce a wider range of tones and can handle tremendous power at high volumes. With dual voice coils and an aluminum basket all at an affordable price, what more can you ask for?
  • Product Dimensions- LxWxH (in inches) 17" x 17" x 12"

Black Diamond DIA-T15.4D: 15" 4 ohm Dual Voice Coil 2000 Watt Subwoofer

This listing includes: (1) Black Diamond - DIA-T15.4D

Introducing the DIA-T15.4D, a high-performance 15-inch dual voice coil car audio subwoofer designed to elevate your audio experience. With a robust 2000 Watts of power and a versatile 4+4 Ohm configuration, this subwoofer delivers deep, impactful bass that will transform your car's sound system. Whether you're a bass enthusiast or simply looking to enhance your in-car audio, the DIA-T15.4D is your ticket to powerful, immersive sound quality on the road.

Nominal Diameter: 15" (381mm)
Nominal Impedance: 4+4 Ohm
RMS Power Handling: 1000 Watts
MAX Power Handling: 2000 Watts
Sensitivity: (1w/1m) 85 dB
Frequency Response: 15-200Hz
Recommended Lo Pass Crossover: 80Hz

Voice Coil Diameter: 3" (76.5mm)
Voice Coil Former Material: Non-Pressed Paper
Winding Material: Copper
Cone Material: Non-Pressed Paper
Dust Cap: PPI
Surround Material: Foam
Basket Material: Aluminum
Basket Color: Finish Sandblasted Black
Magnet Material: Ferrite
Magnet Weight: 120 oz
Displacement Volume: 3.39L / 0.12ft3

Equivalent Volume: Vas 58.9L / 2.08ft3
Excursion: Xmax 24mm
Free Air Resonance: 30 Hz
Mechanical Factor: Qms 4.218
Electrical Factor: Qes 0.908
Total Factor: Qts 0.747
Moving Mass: Mms 460g
Compliance: Cms 59.4 M/N
Bl Factor: BL 13.2
Voice Coil Inductance: Le 0.8 mH
Diaphragm Area: Sd 834.69 cm2
Dc Resistance: Re 3.6+3.68 ohm

Payment Information


We accept PayPal for all ebay orders. You can use your credit through PayPal as all major credit card are accepted by PayPal.

We accept PayPal for all international orders, your address must be verified with PayPal.

We are not responsible for any custom duties or brokerage fees that may apply for all international orders.

When you click on the Buy it Now button you are entering into a
contract whereby you agree to purchasing the item at the price listed.

If you want to ship your item to an alternate address please add
that address on your PayPal account and use the address as the default
or confirmed address to pay us through PayPal

With Free Same Business Day Shipping we work to get you your order Fast. 


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

All pre-selected shipping rates and methods are for customers with a
valid residential or commercial address within the Contiguous 48 United
States (PO Boxes address may require additional charges).

P.O. Boxes, APO/FPO addresses, Alaska, Hawaii, Puerto Rico, Guam,
U.S. Virgin Islands, Northern Mariana Islands, American Samoa, Canada,
and other countries may require additional shipping fees. Please contact
a member of our team for detailed shipping charges.

Shipping is available only to PayPal verified addresses. When making
payment please confirm your address has been verified with PayPal. Once
payment is made shipping address can not be changed/altered. Payments
made using an unverified PayPal address will be refunded and order will
be canceled.

We will not accept request to change shipping address once payment
has been made. Please confirm your shipping address is up-to-date and

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


If you have not received your package, but the tracking information shows that it was delivered,
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

Be sure to double check your mailbox and other usual spots for package delivery


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.