SKU: 83939165300

Sundown Audio - U-Series v.2 10"

Sale price$382.50 Regular price$425.00
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Description

Sundown Audio - U-Series v.2 10"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

  • 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.

Specifications

RE (Ohms) 3.918 6.1962
FS (Hz) 49.9826 48.2463
VAS (L) 5.6312 6.1900
Qes 0.5327 0.6317
Qms 4.4138 4.5611
Qts 0.4753 0.5548
Le (mH) 3.1056 4.1634
BL (NA) 26.5116 29.7199
Mms (Grams) 304.2236 297.0392
Cms (uM/N) 33.3280 36.6351
Sens (dB @ 1w/1m) 82.9533

82.1635

Xmax 30mm

30mm

T/S SPECS UV.2 10" D2 UV.2 10" D4

Enclosure Specifications

Sealed Enclosure 0.5 cu ft
Ported Enclosure 1.0 cu ft
Recommended Tuning 35Hz
Recommended Port Area 16 sq in
Displacement 0.21 cu ft
Depth 8.15″
Outside Diameter 11″
Cut-Out 9.75″
Physical Dimensions Download

    Dimensions

    Shipping Notes
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    Exchange/Return Notes
    • We offer a 30-day return/exchange service after receiving.
    • Final sale items are not eligible for returns or exchanges.
    • To process your return/exchange, please contact us at [email protected]
    • Please click here for more details>>> Return & Exchange Policy
    SKU: 83939165300

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    4.1 ★★★★★
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    A
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    Amazon Customer
    Houston, US
    ★★★★★ 5
    Solid all-around watch
    Color: Grey
    I was looking for something that I could wear just about anywhere. I wouldn't wear this to the gym, but it looks good in casual, work, elevated, and even some dress environment. Black-tie, I might look for something a bit more elegant, but 95% of the time, this watch fits. Keeps good time. I haven't witnessed a full 80 hour power reserve yet, but I also can't say that I ever needed that much. Lume is nice, just give it a chance to charge up. I like this more than the PRX. It's a more classic look, I think PRX will look silly in a short time in comparison.
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    Reviewed in the United States on May 4, 2023
    M
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    MP220
    Massapequa, US
    ★★★★★ 5
    Excellent value, beautiful aesthetics
    Color: Grey, Color: Grey
    This watch confirms what is mentioned in reviews all over the internet- a great value proposition in so many ways. Accuracy has been +3s/week, well within specification, and rivals that of much more expensive watches, including chronometers. The bracelet has a quality feel and heft, and the case contours nicely to the wrist and is very comfortable. The green dial appears to change color with different angles and absolutely pops in the sunlight. Highly recommended, even as a first automatic/mechanical watch.
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    Reviewed in the United States on February 22, 2022
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    Rahleek Walker
    Belleville, US
    ★★★★★ 5
    Very well built, will last you a very long time
    Style: Trifold, Style: Trifold
    This wallet is very sturdy, and barely has any wear on it after I've purchased it over a year ago. Most wallets will start to greatly scuff, wear, or degrade/break down just from being taken in and out of your pocket but this wallet has held up particularly wear with VERY MINIMAL light scuffing. Quality leather so I know I will have this wallet for a very long time! It has great card holding capacity as i currently have about 10 cards in it and it still has a pretty slim profile. The wallet itself is a very nice, natural looking wallet. The ease of pulling cards in and out definitely has made me a fan.
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    Reviewed in the United States on May 30, 2026
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    Morgan
    Lexington, US
    ★★★★★ 5
    Rugged, Stylish, and Built to Last
    Style: Bi-fold
    I bought this Carhartt oil-tan leather wallet for my husband, and it’s exactly what I hoped for. The leather feels thick and high quality, with that classic rugged Carhartt look. The stitching is solid, and it’s clear this wallet will hold up for years of daily use. It has plenty of card slots and an ID window, but still stays slim enough to fit comfortably in a back pocket. The canvas lining is a nice touch, and the embossed Carhartt logo adds just the right amount of style. It even came packaged in a collectible tin, which made it perfect for gifting. Highly recommend to anyone who wants a durable, functional, and great-looking wallet!
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    Reviewed in the United States on August 10, 2025
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    Amazon Customer
    Louisville, US
    ★★★★★ 5
    Great quality, classic and durable wallet
    Style: Bi-fold
    I bought this wallet for my husband, and he’s been really happy with it. The leather feels high quality, and the wallet has a clean, stylish look that isn’t bulky. It seems very well made and durable, and it feels like it will last a long time with everyday use. The size is practical, and everything fits comfortably without being too thick. Overall, this was a great purchase and would make a nice gift.
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    Reviewed in the United States on January 21, 2026

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