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Sundown Audio U-Series v.2 18" 1750w Subwoofer D2/D4

$495.99 USD
$495.99 USD $619.99 USD
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About the Product

Sundown Audio U-Series v.2 18" 1750w Subwoofer D2/D4

  • RMS 1750 watts
  • 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.

 

Specifications

T/S SPECS UV.2 12" D2 UV.2 12" D4
RE (Ohms) 3.8407 6.0577
FS (Hz) 41.3260 41.9087
VAS (L) 14.7612 14.7535
Qes 0.4862 0.5870
Qms 4.7454 4.9022
Qts 0.4410 0.5242
Le (mH) 3.1858 4.3694
BL (NA) 27.2694 31.1265
Mms (Grams) 358.6438 356.5462
Cms (uM/N) 40.4709 40.4498
Sens (dB @ 1w/1m) 85.1980 84.4191
Xmax 30mm 30mm


Enclosure Specifications

Sealed Enclosure 1.0 cu ft
Ported Enclosure 2.0 cu ft
Recommended Tuning 35Hz
Recommended Port Area 32 sq in
Displacement 0.21 cu ft
Depth 8.43″
Outside Diameter 12.84″
Cut-Out 11.2″
Physical Dimensions Download

 

Specifications

RE (Ohms) 3.8710 6.0767
FS (Hz) 30.9541 30.9212
VAS (L) 111.7625 114.6901
Qes 0.5669 0.6572
Qms 5.6396 5.5116
Qts 0.5151 0.5872
Le (mH) 3.3981 4.7475
BL (NA) 27.4023 31.4938
Mms (Grams) 565.4130 552.1551
Cms (uM/N) 46.7560 47.9807
Sens (dB @ 1w/1m) 89.4169 88.8733
Xmax 30mm 30mm
T/S SPECS UV.2 18" D2 UV.2 18" D4

Enclosure Specifications

Sealed Enclosure 3.0 cu ft
Ported Enclosure 4.0 cu ft
Recommended Tuning 35Hz
Recommended Port Area 64 sq in
Displacement 0.26 cu ft
Depth 10″
Outside Diameter 18.63″
Cut-Out 16.9″
Physical Dimensions Download

Free shipping is available in the continental United States, excluding Hawaii and Alaska.

International shipping is available and calculated at checkout.

All orders will receive tracking once shipped through USPS, Fedex, UPS, and DHL.

Return for refund within: 30 days

Return for replacement within: 30 days

Standard Return Policy Overview

You may return merchandise purchased from Showtime Electronics for a refund or a replacement, provided that the procedures and requirements are followed. All returns require a return merchandise authorization (RMA) number. An RMA number must be issued within 30 calendar days after the date of purchase. An RMA number is valid for 14 calendar days after it is issued. Once you log in to your user account, you will be able to Request and RMA. In addition, you can also request an RMA at the bottom of our homepage. If you have any issues, please email us at sales@showtimeelectronics.com

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