Sundown X-8v.2 D2/D4 8” Subwoofer

The Sundown X-8, along with all other 8s in our line, is a unique driver within its line-up. Contrary to the design of the other X subwoofers the X-8 is more of an SPL oriented subwoofer. The X-8 suspension design (spider & surround) were designed around creating larger peaks for SPL purposes. It is built on our patented 8” subwoofer frame (US Patent D691595) just like the SA-8 v.3 so it shares the same massive mechanical clearances (2.5” p-p allowable). 

For the X-8 v.2 we removed the vented spacer ring as we did on the SA-8 v.3 and added the same high-velocity vent-holes around the frame base below the spider. This allowed us to reduce the mounting depth a bit to expand installation options. We also added a series of machined channels down the full height of the pole to increase air based cooling and also to reduce audible air velocity though the motor.

The spider is a unique, progressive roll unit two layers thick. This spider was heavily FEA optimized to do the trick job of allowing large excursion capacity with a 2.5” coil on an eight inch subwoofer. The surround features geometry very similar to the “SPL” cone options on our large woofers in a bit smaller size to suit the excursion capacity of this woofer. Both parts of the suspension support levels of excursion in excess of the linear limits of the motor & coil design. 

While the X-8 is more of an SPL optimized woofer it does feature the highest linear x-max of any 8” in our line at a full 19mm one-way. It also features a very thick magnet ID shorting ring just like the SA-8 v.3 as well so will enjoy the same benefit of lowered inductive distortion. Make no mistake; the X-8 is still a very clean sounding subwoofer. 

If the sound of the SA-8 is too smooth for you – meaning you want a more aggressive & punchy sound – then the X-8 is the woofer for you. If you want the highest SPL output from any 8” woofer in our line – then the X-8 is, once again, the woofer for you.


Features & Technology: 

  • Xmax = 19mm one-way by 70% BL
  • RMS Power = 750-watts
  • Solid Pole piece with chamfered edges & machined air channels for increased voice coil cooling
  • High velocity under-spider frame vents
  • Black Aluminum 2.5” voice coil former for superior heat dissipation
  • High Temperature copper voice coil wire
  • Large aluminum faraday ring (Magnet ID)
  • Spring Loaded Terminals
  • Stitched-On Double High-Power Tinsel Lead Wires
  • High strength & patented cast aluminum frame
  • Optimized for small ported enclosures


Sundown X-8v.2 Subwoofer specs: 

  • Speaker Size = 8" D2/D4
  • Nominal Impedance = 4.0/6.0 ohm
  • Rated RMS power handling = 750W
  • Sensitivity = 80.8/81.1 dB
  • Fs = 46.770/48.506 Hz
  • Qes = 0.544/0.533
  • Qms = 4.432/5.542
  • Qts  = 0.485/0.486
  • Cms = 72.995/68.515 µm/N
  • Mms = 158.641/157.131 g
  • BL = 18.508/23.218 NA
  • Vas = 4.190/3.933 L
  • Cutout Diameter = 7 3/8"
  • Mounting Depth = 7"
  • Overall Diameter w/ Gasket = 8 3/4"
  • Displacement (ported) = 0.75 – 1.0ft3


Sundown X-8v.2 D2/D4 8” Subwoofer
  • Item #: sundown x-8v2
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Price $309.99
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