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Sundown Audio X-15 v2 (free box design with 2 or more)

49.00 LBS
Calculated at checkout


Product Description

The X v.2 series is the first driver in the Sundown woofer line-up to offer our “ultra-high excursion” suspension and frame designs. The 10, 12, and 15″ models feature our custom tooled and patented frames (US Patent Numbers D691596, D691597, and D691598) and the 18″ model uses the tried and true 18″ 6-spoke with a custom tooled adapter to allow for a full 10″ diameter spider. Optionally our custom tooled 18” frame is available for an extra charge (US Patent Number D741841) – this frame utilizes an 11” spider & changes the coil configuration availability changes to D1 & D2.

We mate these new platforms to a triple stacked 220mm (8.66”) diameter motor structure featuring a hyper-extended pole and extreme clearances (allowing up to 4″ p-p travel before mechanical bottom). This motor drives a 3″ diameter 4-layer CCAW coil wound on a thick aluminum former to incredible levels of excursion. For the v.2 revision we upgraded the coil to a new “black coil” design which handles significantly more heat than the coil form the X v.1 series.

The X v.2 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 you are used to using for Sundown Audio subwoofers, although, the will tolerate enclosures up to about 50% larger than those if you desire even more low-end extension.

The X v.2 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.

One of the most obvious changes from the v.1 series is the much larger motor structure (220mm vs. 190mm on the v.1 series). The motor ventilation has also been improved and we also upgraded to the all-new Mega-Roll v.2 surround which is a more linear & more rugged update to our world-famous Mega-Roll v.1 surround design

T/S SPECS Xv2 15″ D2 Xv2 15″ D4
RE (Ohms) 3.8 6.1
FS (Hz) 29.6 29.5
VAS (L) 58.9 59.5
Qes 0.40 0.50
Qms 4.65 4.92
Qts 0.37 0.45
Le (mH) 2.53 3.61
BL (NA) 25.6 28.8
Mms (Grams) 366.8 365.3
Cms (uM/N) 0.08 0.08
Sens (dB @ 1w/1m) 87.7db 86.7db
Sealed Enclosure Not Recommended
Ported Enclosure 4.25 cu ft
Recommended Tuning 32Hz
Recommended Port Area 68 sq in
Displacement 0.22 cu ft
Depth 10.85″
Outside Diameter 15.51″
Cut-Out 13.83″
COMING SOON… Enclosure designs by



Warranty Information

Your new Sundown Audio subwoofer is covered by a 2 year limited warranty if purchased from Car Audio Bargain. This warranty does not cover improper installation, accidental damage, misuse, abuse, improper wiring, operation of unit outside of listed specifications, or any product that has been modified or repaired by anyone other than Sundown Audio. This warranty does not cover burnt voice coils or other damage from to much power - re-cones for most products are available for sale in these cases. Warranty on subwoofers and loudspeakers is NOT transferrable.

All warranty returns must be sent freight prepaid to Sundown Audio and be accompanied by the original sales invoice or receipt. For faster warranty service please contact Sundown Audio to request a return authorization code. At the sole discretion of Sundown Audio your subwoofer will be either repaired or replaced.

If no defect is found and the unit must be shipped back the customer is responsible for return freight, if the unit is truly defective the replaced or repaired unit will be shipped back prepaid. In the event of shipping damage due to improper packaging of the return the customer is liable for the cost of all damages, necessary repairs, or replacement. Be sure to properly pack your return!

Sundown Audio also offers a 5 year guarantee to our customers for a discounted replacement unit. We are so certain of the quality of our equipment that even if you are at fault for causing damage to your subwoofer Sundown Audio will offer you a new unit at a reduced cost compared to MSRP. Contact us via e-mail to take advantage of this offer. As is the case with standard warranty claims the return MUST be sent prepaid and with a copy of the original invoice or receipt.

In no event will Car Audio Bargain be liable for incidental, consequential, or other damages resulting from the use of this product, this includes but is not limited to, damage of hearing, property or person, damage based upon inconvenience or on loss of use of the product, and to the extent permitted by law, damages for personal injury. This warranty gives you specific legal rights, and you may have other rights, which vary from state to state. This warranty applies to products sold and used in the United States of America.

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Product Reviews

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  1. Monster theater sub 5 Star Review

    Posted by on 24th Jan 2020

    It worked perfectly for my DIY home theater powered subwoofer.
    Insanely crushing the lows. I've yet to hear a powered sub even close to it. Very happy!!

  2. SERIOUS SUB!! 5 Star Review

    Posted by on 23rd Nov 2019

    I've always liked my Sundowns in my ride, so I thought why not build an experimental home theater sub. Wow! So So glad I did. I built the box to required specs. Only to look like a home sub. I'm powering It with an INUKE 12000 and It smokes any home theater sub I've ever heard. Hands down! and I've had some pretty mean subs. Definitely getting 1 more!! Fast shipping! Very Very! pleased!

  3. low end monsters! 5 Star Review

    Posted by on 15th Nov 2019

    Im super impressed with these. I figured being car audio subs will move way more air than an average home audio sub. and handle way more power. So as an experiment, I built two custom enclosures to Sundown's specs., (4.25 @ 32hz )only to look like powered subs, for my home theater. These are powered by an Inuke 12000.
    Not only do they look mean! but
    the bass these put out is absolutely insanely loud, clear, low, clean and hits so hard, that It literally shutters the floor under your feet. They smoke any powered sub I've ever owned or heard, hands down! and I've owned some pretty mean, also expensive subs. These monster subs are well worth the money!

  4. low end insanity 5 Star Review

    Posted by on 14th Nov 2019

    Being I have Sundown in my car, I figured why not add some to my home theater I've been building for years now. (Huge hobby) It makes IMAX sound like a joke already lol. Well the X15's Sound even better, than they look! I'm using 2 of these to add to my many home theater subs, they are powered by an INUKE 12000. I built the boxs to recommended specs. (Only looking like huge powered subs of course). The lows these things can hit, are amazing! Very clean, and handle some serious power. So underrated!! I have owned literally almost every high dollar home powered sub you can think of, and they don't even compare to these. Very happy!! Keep up the great work Sundown!

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