Sundown Audio SLD-10 D2 10" 500 Watt Dual 2 Ohm Shallow Subwoofer — Big Jeff Audio Dealer Platform
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Welcome To The Dealer Platform


  • Black Aluminum 2.5" voice coil former for superior heat dissipation
  • High Temperature 4-Layer copper voice coil wire
  • Stitched-On "Mini-XL" Tinsel Leads to prevent fatigue and failure
  • Solid Pole with high velocity vent channels machined around the OD

Sundown Audio SLD-10 D2 10" 500 Watt Dual 2 Ohm Shallow Subwoofer

This listing includes:

  • (1) Sundown Audio SLD-10 D2 10" 500 Watt Dual 2 Ohm Shallow Subwoofer

The Sundown SLD series can be considered a "re-boot" of the SD-2 line from 2011. The SD-2 was essentially a "shallow SA v1" by design – meaning it shared the cone, surround, and spider with the SA but with a shorter motor with a shorter coil. The SD series went another route starting with the 3rd generation (SD-3) – tilting more towards SQ and sealed enclosures (this remains true for the SD-4 series as well). Due to popular demand we created the SLD series to add a heavily abuse tolerant "shallow" that likes ported boxes back into the line-up!

Much like the current SD-4 series we utilized solid pole-piece so the SLD can also be mounted directly against the rear enclosure wall to reduce net depth requirements. Compared to the old SD-2 we have introduced numerous important upgrades: pole-piece channels for reduced air noise & increased cooling, top-plate "slits" for better cooling and less distortion, and a magnet ID shorting ring. In terms of long-term reliability we have also bolted down the spider, bolted the motor together, bolted on the aluminum pole cap, and added "mini-XL" lead wires thus ensuring many years of flawless service.

The bottom line is if you need a relatively shallow woofer that will take a beating then the SLD is, hands-down, the woofer for you from our line. If you are looking for more SQ then look toward the SD-4 series.


  • Xmax = 12mm one-way by 70% BL

  • Xmech is a hard limit of 25mm one-way (being over 2x the Xmax it is a very generous limit)

  • RMS Power = 500-watts

  • Vented, EMD Cut, Top-Plate Design

  • Bolt-through motor design to ensure maximum longevity and ruggedness against mechanical failures** This motor is bolted through the top so the bolts are not visible from the back like several other models.

  • Magnet ID shorting ring


  • RE (Ohms): 3.65

  • FS (Hz): 44.907

  • VAS (L): 14.630

  • Qes: 0.452

  • Qms: 2.212

  • Qts: 0.376

  • BL (NA): 18.247

  • Mms (Grams): 146.252

  • Cms (uM/N): 85.883

  • Sens (dB @ 1w/1m): 86.5

Enclosure Specifications:

  • Sealed Enclosure: 0.5 cu ft

  • Ported Enclosure: 1.0 cu ft

  • Recommended Tuning: 35Hz

  • Recommended Port Area: 15 sq in

  • Depth: 4.9"

  • Outside Diameter: 10.5â€

  • Cut-Out: 9.25â€

Subwoofer Dimensions:

  • Overall depth: 6.01"

  • Mounting depth: 4.94"

  • Overall diameter: 10.4"

  • Cutout diameter: 9.28"

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.

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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.

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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.

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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.