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U-Series v.2 10
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U-Series v.2 10
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U-Series v.2 10
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U-Series v.2 10

U-Series v.2 10" Subwoofer

Regular price $529.99 USD
Regular price Sale price $529.99 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: D4
    • 2000 Watts RMS / 4000 Watts Peak
    • Dual 2 or 4 ohm voice coils
    • Optimized for small ported enclosures
    • Aluminum 3” voice coil former for superior heat dissipation
    • High-temperature copper voice coil
    • Double stitched surround
    • Heavy-duty cast basket
    • Spring-loaded terminals accept up to 8-gauge wire
    • Stitched-on heavy-duty tinsel leads
    • Solid pole with vent channels and aluminum shorting ring cap
    • Rear gap-venting
    • Top-Plate Cooling Channels

    Designed to be at home in the competition lanes or playing your favorite music, the U Series is the premier “standard suspension” woofer in the Sundown lineup. A double-stacked 9.4-inch wide ferrite magnet system is coupled to a thick top plate. A thick set of shorting rings are used inside the magnets and on the pole cap, smoothing out frequency response while doubling as a heat sink and airflow guide. A custom, substantially thicker aluminum frame was designed specifically for the U Series, equipped with heat dissipation ribs. The U v.2 motor also features an extended pole piece to keep the coil under perfect control under high stress. The coil temperature is kept in check via a high-velocity solid pole / machined pole channels arrangement and a series of 16 direct air-gap vents in the back plate.


      Dimensions

      ParameterD2 ModelD4 Model
      Re3.91 Ω6.19 Ω
      Fs50.0 Hz48.2 Hz
      Qms4.41004.5600
      Qes0.53000.6300
      Qts0.47000.5500
      Vas5.630 L6.190 L
      Mms304.22 g297.03 g
      Cms0.03 mm/N0.04 mm/N
      BL26.510 T·m29.710 T·m
      Le3.10 mH4.16 mH
      Sd506.6 cm²506.6 cm²
      Xmax30mm30mm
      SPL (1W/1m)82.9 dB83.2 dB
      SpecificationD2 ModelD4 Model
      RMS Power2000 W2000 W
      Peak Power4000 W4000 W
      Displacement.18cu ft.18cu ft
      Mounting Depth8.15"8.15"
      Outside Diameter11"11"
      Cutout Diameter9.75"9.75"
      Motor Diameter9.7"9.7"
      Sealed Enclosure.5cu ft.5cu ft
      Ported Enclosure1.0cu ft1.0cu ft
      Recommended Port Tuning35hz35hz
      Recommended Port Area16sq in16sq in
      Xmax30mm30mm
      4th Order Sealed.4cu ft.4cu ft
      4th Order Ported1.2cu ft1.2cu ft
      4th Order Port Area24sq in24sq in
      4th Order Port Length6"6"

      Complete Your System