Sundown Audio


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  • Sundown Audio SUNDOWN AUDIO U SERIES 15 1500WRMS D2 OHM
  • Sundown Audio SUNDOWN AUDIO U SERIES 15 1500WRMS D2 OHM
  • Sundown Audio SUNDOWN AUDIO U SERIES 15 1500WRMS D2 OHM
  • Sundown Audio SUNDOWN AUDIO U SERIES 15 1500WRMS D2 OHM
  • Sundown Audio SUNDOWN AUDIO U SERIES 15 1500WRMS D2 OHM
  • Sundown Audio SUNDOWN AUDIO U SERIES 15 1500WRMS D2 OHM
  • Sundown Audio SUNDOWN AUDIO U SERIES 15 1500WRMS D2 OHM
  • Sundown Audio SUNDOWN AUDIO U SERIES 15 1500WRMS D2 OHM
MSRP: $599.99
Now: $299.99
Was: $494.99
— You save $300.00

Out of stock


T/S SPECS U 15″ D2 U 15″ D4
RE (Ohms) 3.8 6.1
FS (Hz) 37.9 34.9
VAS (L) 54.0 63.9
Qes 0.34 0.39
Qms 3.10 3.48
Qts 0.31 0.35
Le (mH) 2.44 3.80
BL (NA) 30.7 34.6
Mms (Grams) 355.7 353.0
Cms (uM/N) 0.05 0.06
Sens (dB @ 1w/1m) 91.2db 90.2db
XMAX One Way 30mm 30mm


Sealed Enclosure 2.0 cu ft
Ported Enclosure 3.0 cu ft
Recommended Tuning 35Hz
Recommended Port Area 48 sq in
Displacement 0.24 cu ft
Depth 9.05″
Outside Diameter 15.59″





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Warranty Information

Warranty Information

Sundown Audio requires us to send customers with equipment problems directly to them for all warranty and non-warranty claims. Please follow their proceedures..


Sundown Audio RMA form:

Sundown Audio Product Warranty Information:


Sundown Audio - Hours of Operation

Monday 9am - 5pm EST
Tuesday 9am - 5pm EST
Wednesday 9am - 5pm EST
Thursday 9am - 5pm EST
Friday 9am - 5pm EST
Saturday Closed
Sunday Closed
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11 Reviews

  • 5

    Posted by GuyWithTheMeter on Jun 16, 2023

    There was no way the transaction could have been any better. The shipping was so fast it wouldn't surprise me if they knew what I was ordering and had it already shipped before I even decided to order it! Prices can't be beat, excellent customer service!

  • 3
    No sticker in the box

    Posted by Antonio Manuel on Jun 02, 2022

    Neither sub box had a sticker enclosed and i asked for stickers

  • 4
    Sundown U-15

    Posted by Brice Garnett on Aug 30, 2021

    Sadly my initial experience with the sub wasnt the greatest. The sub had coil rub upon arrival, but even though it had coil rub, it still sounded excellent. There were certain notes the sub was struggling with, obviously due to the coil rub. But once I receive a new sub from sundown ill be able to test further. I had a very rare encounter with a sundown product. Ive had many of their subs prior, and this has never happened. So im not very discouraged. When you buy a sundown product, expect the highest of customer service. They were glad to warranty the sub for me. So have no worries shopping with sundown.

  • 5
    Love them

    Posted by Sterling Green on Jul 28, 2021

    Sounds real good

  • 5
    15” Sundown Audio U series

    Posted by Micah Hanawahine on Jul 25, 2021

    I love it.. still breaking it in.. it hits hard.. box built at 32htz.. looks great in my car!

  • 5
    Sundown audio u series 15 In 1500wrms

    Posted by Chris on Apr 17, 2020

    By far the best sub I’ve ever bought. The build quality is perfection and some and the ass is fat and heavy! :) The price is well worth it. I’ve paid the same price for subs half this quality in the past but never again. I’ll be ordering another very soon to have a pair of these badass subs.

  • 5
    U series 15

    Posted by Jason on Feb 01, 2020

    Grate sub sound is crisp and clear low are good and will get better with time love me some lows. She's handling the v12 mrv 1507 nicely had a 15inches treo and I feel as this sub is much clearer. Only a week old and I'm in love will definitely think downfor sounds befor my next audio purchase

  • 5
    Best service and company around.

    Posted by Derek Reynolds on Aug 26, 2019

    10/10 completely recommend purchasing any audio needs with down4sound and Jonathan Price!

  • 5
    Beefy woofer

    Posted by Scott Weaver on Mar 17, 2019

    Just put in my Kia Sportage last night and it is very punchy and upper bass tones are clear. Low end extension is great but I know over the next month that will even improve. At this moment I am only running 605w RMS according to my AMM-1 but it has much more output then the DC level 2 12” that was in the car before with the same power. The only issue I have is the sundown logo is not level with the mounting holes so I had to turn the woofer a little.

  • 5
    Sundown u 15

    Posted by charles trudeau aka aaron jones on Nov 29, 2018

    Amazing subwoofer hits hard. Lows not too hard but it's incredibly clear and precise. I'd imagine if you got a custom box for it it will perform alot better. All in all an amazing subwoofer you can play hard all day and not worry about heat. But if you crank up the gain and over power the hell out of it it's on your head. I drove from Ri to Maine playin this sub the whole time and it never got too hot. Stays cool. If ya want super powered lows get a x or a team or a nightshade series if you want a great sub for a daily driver. Get this.

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