Sundown Z-18v.3 D1/D2 18” Subwoofer

The third generation Z series woofer builds upon many years of customer and SPL competition experience to create an exceptional combination of low distortion and high output at a reasonable price. The Z v.3 line carries a conservative 1500-watt RMS rating. This line features a beefy 8-layer flat-wound aluminum voice coil wound on a black aluminum former. As with our SA series these woofers also feature dual faraday rings for lower levels of distortion and higher power delivery from your amplifiers. 

The Z v.3 line has been a staple in our line-up since 2011 and it quickly became our best-selling "big boy" driver of its time as our top-of-the-line model (until the launch of the X and Z v.4). It remains in our line-up for customers after a more "traditional" driver and/or a shallower mounting depth than the X and Z v.4 series. The 10" model is no longer available -- the 12/15/18 are still in full production. 

As discussed above the Z v.3 is a more “traditional” subwoofer design. It does not feature the same Mega-Roll surround or massive, patented frame technologies as our larger lines / X series. It has a more aggressive & punchy sound that many folks still enjoy. It is also the best choice for higher-frequency SPL burp classes in our ferrite-based subwoofer line. 

Anyone who has been around the competition scene for long is well aware of the reputation built by the Z v.3 series woofers. They hold a slew of world championships in bass race, bass boxing, and various SPL competition formats.  


Features & Technology: 

  • Xmax = 30mm one-way by 70% BL
  • RMS Power = 1500-watts
  • * Vented magnetic gap
  • * Optimized high-velocity pole vent
  • * Innovative high-velocity vented frame spacer ring
  • Black Aluminum 3” voice coil former for superior heat dissipation
  • High Temperature 8-Layer Aluminum Flat Wire Voice Coil (Made in USA)
  • Large aluminum faraday ring (Magnet ID)
  • Spring Loaded Terminals
  • Stitched-On Double-XL Tinsel Leads to prevent fatigue and failure
  • High strength cast aluminum frames
  • Optimized for small ported & band-pass enclosures
  • * -- These features combine to create the optimized coil ventilation system.


Sundown Z-18v.3 D1/D2 Subwoofer specs: 

  • Speaker Size = 18" D1/D2
  • Nominal Impedance = 1.7/4.0 ohm
  • Rated RMS power handling = 1500W
  • Sensitivity = 89.6/88.5 dB
  • Fs = 31.8/31.9 Hz
  • Qes = 0.5/0.6
  • Qms = 5.5/5.2
  • Qts  = 0.5/0.5
  • Cms = 49.5/45.8 uM/N
  • Mms = 503.8/541.4 g
  • BL = 17.8/17.8 NA
  • Le = 2.0/3.5 mH
  • Vas = 104.2/96.5 L
  • Cutout Diameter = 16 11/16"
  • Mounting Depth = 11 1/4"
  • Overall Diameter = 18 7/16"
  • Displacement (sealed) = 3.00ft3
  • Displacement (ported) = 4.00ft3


Sundown Z-18v.3 D1/D2 18” Subwoofer
  • Item #: sundown z-18v3
Price $699.99
Sale Price $559.99
Availability Not Available
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