The Sundown U Series is our premier “standard suspension” woofer series. It is the most direct replacement for the world famous Z v.3 woofer line which we produced from 2011 to 2016 before launching the “new platform” Z v.4 series. Due to numerous advancements in our design process the U Series is able to deliver performance on-par with the Z v.3 series but at a much lower cost.
We start with a double-stacked / 8.66” wide Y35 grade ferrite magnet system coupled to a one-piece, bumped T-Yoke and a 0.6” thick top-plate. Just as with the Z v.3 before it and our other high-end subwoofers we also add a very thick (5mm thickness) aluminum shorting ring inside the magnets to reduce static inductance and level out inductance over stroke. The U series motor also features a 0.6” long pole-extension to keep the coil under control at high levels of excursion.
The voice coil is a 2.36” long / 3” diameter 4-layer aluminum winding / aluminum former unit – which is the same coil we use in our X v.2 series and, thus, the U series has the same 1500-watt RMS ratings. The coil temperature is kept in check by a heavily smoothed / high-velocity pole-vent and a series of ten direct air-gap vents in the back plate. The U series also features newly tooled cast aluminum vent rings in between the frame and top plate to effectively exchange air at a high velocity over the voice coil beneath the spider landing.
The U series features an all-new cast aluminum frame series to the Sundown line which allows for taller cones than the older frames used on the Z v.3 series. The taller cones provide enhanced coil stability and increased mechanical excursion capability. We also tooled matching cast-aluminum surround clamps for the U series to ensure durability in the most demanding situations. The surrounds and cone bodies have been fully custom tooled especially for the U series and are stronger / support more excursion than the Z v.3 series cones and surrounds. The new cone bodies also feature an indentation for the same wide-flange, ultra-strong dust caps as our new platform subwoofers.
If you are looking for a woofer that sounds similar to the SA series but handles significantly more power… the U series is exactly what you need. It has been designed to live up to the reputation earned by our Z v.3 series both in terms of every-day music enjoyment and SPL competition.
|T/S SPECS||U 12″ D2||U 12″ D4|
|Sens (dB @ 1w/1m)||88.4db||85.0db|
|Sealed Enclosure||1.0 cu ft|
|Ported Enclosure||2.0 cu ft|
|Recommended Port Area||32 sq in|
|Displacement||0.21 cu ft|
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.
Posted by Justin on 2nd Apr 2019
I recently purchased and installed a new u 12 sundown sub. I installed it in a 2.2cu' after displacement box with 30sq." Of port tuned to 32hz. It's powered by a cab 1600.1. It sounds great and murders the lows. The box is also surprisingly flat responding. I installed today and can't imagine how it will sound after break in. The same amp was powering a sq hds3 15 for a couple years and the output of the u 12 puts the larger sub to shame, on day 1 mind you the squbed 15 is well broken in and still can't come close in output nor the lower frequencies. It might be the box but I built them both to manufacture specs. If your on the fence I would recommend this sub in dual2 ohm and let it rip.