SDDN 15
SDDN 15
SDDN 15
SDDN 15
SDDN 15

SDDN 15" Limited Edition Competition Subwoofer

$1,399.99 USD
$1,399.99 USD
Shipping calculated at checkout.

Notice On Packaging For Subwoofers
Sundown Audio has led the industry in quality and performance for over a decade. To improve accuracy and transparency, we have updated our subwoofer power ratings to reflect true real-world performance.
During this transition, some packaging may show previous ratings. Performance fully aligns with our current published specifications. If you have any questions about authenticity or ratings, please contact directly for confirmation.

Impedance: D1


  • 3,500 watts RMS
  • Available in 10 through 18-inch versions
  • Dual 1 ohm coils
  • Mega V2 Cone
  • Aluminum 3.3” x  80mm coil
  • Dual 8 AWG terminals with dual-layer tinsel leads
  • Custom cross-cut pole piece with Neodymium cap for increased output and thermal control
  • 5-layer spider
  • 1,336 oz (83.5 lbs) magnet with integrated thermal ventilation
  • Optimized for Ported & 6th order enclosures
  • Carbon cone upgrade available 

Designed in-house by Sundown Founder Jacob Fuller, the 3,500-watt RMS SDDN is available in 10, 12, 15, and 18-inch models. Each unit boasts a massive 83-pound motor with integrated thermal ventilation, featuring a custom cross-cut pole piece with a Neodymium cap for increased output and thermal control. Sundown’s signature Mega V2 cone is paired with a five-layer spider, a 3.3” x 80mm aluminum voice coil (dual 1-ohm), and dual tinsel leads per eight-gauge terminal. 

SpecificationSDDN-15 D1
Fs30.14 Hz
Re1.92 Ω
Qms4.2100
Qes0.2430
Qts0.2300
Mms549.32 g
Cms51.03 µm/N
Sd1141.9 cm²
Vas38.59 L
Sensitivity88.12 dB
BL28.620 T·m
Le3.98 mH
X-Max35 mm
RMS Power3500 W
Peak Power7000 W
SpecificationSDDN-15 D1
Overall Diameter15.51"
Cutout Diameter13.93"
Motor Diameter9.84"
Mounting Depth13.13"
Displacement0.29 Cu. Ft.
Sealed VolumeNot Recommended
Ported Volume4.25 cu ft
Port Tuning32 Hz
Port Area68 sq in

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