Z-Series ZV6 12" 2500W Subwoofer Z v.6

$743.99 $929.99

The Z v.6 is the second step up in Sundown's "ultra-high excursion" subwoofer lineup after the X v.3 series and replaces the world-famous Z v.5 series. All models (10,12,15,18) feature our custom tooled and patented frames (US Patent Numbers D691596, D691597, D691598, and D741841).

Sundown mates these new platform frames to a quad stacked 240mm (9.45”) diameter motor structure with a total magnet stack height of 100mm (3.94”) featuring a hyper-extended pole and extreme clearances (allowing over 4" p-p travel before mechanical bottom effectively making it bottomless). Compared to the X v.3 motor both the top & back plates are thicker allowing for even more magnetic strength and excursion potential. For the Z v.6 the top plate is another 5mm thicker than even the outgoing Z v.5 series!

This motor drives a 3" diameter 8-Layer Flat Wire Aluminum Voice Coil wound on a thick aluminum former to incredible levels of excursion. The Z v.6 now uses the same voice coil as the NS v.5 series. The Z v.5 utilized a 4-layer voice coil – the change to an 8-layer was to answer our customers desire for higher motor force (more output) and it does just that!

Based on Sundown's years of experience with the Z v.4 and Z v.5 series we've also improved the voice coil ventilation to be even more effective. The Z v.6 features a high-velocity pole vent, a heavily vented magnetic gap, and (all new for the v.6) machined channels in four places around the pole piece itself.

The Z v.6 series was designed from the ground-up to become the new standard in the low-frequency / small ported box subwoofer category in this price range. They will work in the same small enclosures that are commonly used for for Sundown Audio's subwoofers, although, they can be used with enclosures up to about 50% larger than those if you desire even more low-end extension.

The Z v.6 series is really a different kind of woofer due to its incredibly linear suspension. They are designed for the LOWEST level of bass extension possible in a small enclosure while maintaining extremely low levels of distortion.


  • Power Handling: 2500 Watts RMS
  • Xmax = 35mm one-way by 70% BL
  • Heavily vented magnetic gap
  • Spring Loaded Terminals
  • Optimized high-velocity pole vent
  • Innovative high-velocity cast-aluminum vented frame spacer ring
  • Black aluminum 3 inch 8-layer voice coil
  • Mega-Roll v.2 surround
  • Custom tooled basket
  • Large aluminum Faraday (shorting) Ring
  • Stitched-On XL Tinsel Leads to prevent fatigue and failure
  • Custom-tooled ultra-linear spider packs


T/S SPECS Z V.6 12″D1 Z V.6 12″ D2
RE (Ohms) 1.9 3.8
FS (Hz) 33.8198 32.8874
VAS (L) 15.9340 16.0046
Qes 0.3896 0.3829
Qms 5.3260 5.5170
Qts 0.3630 0.3580
Le (mH) 1.9749mH 4.0629mH
BL (NA) 20.7920 30.0324
Mms (Grams) 412.9036g 434.7198g
Cms (uM/N) 53.6353uM/n 53.8729uM/n
Sens (dB @ 1w/1m) 83.7396dB 83.4705dB

Enclosure Specifications

Sealed Enclosure Not Recommended
Ported Enclosure 2.5 cu.ft. net
Recommended Tuning 32Hz
Recommended Port Area 38 sq.in.
Displacement .24 cu. ft.
Depth 11.75"
Outside Diameter 12.67"
Cut-Out 11.09"
Physical Dimensions Download

Enclosure Designs

.Zip File