Sundown Audio SDDN 18" Limited Edition Competition Subwoofer

• 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 4th & 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. 

SPECIFICATIONS

Re = 2.0333
Fs = 30.0404
Zmax = 33.3616
Qes = 0.3345
Qms = 5.1537
Qts = 0.3141
Le = 4.2364
Diam = 381.0000
Sd = 114009.1866
Vas = 72.2840
BL = 28.6825
Mms = 717.0201
Cms = 39.1469
Sensitivity 1w/1m = 89.4252