Your Cart ()
cload

GUARANTEED SAFE & SECURE CHECKOUT

 

Got a Question? Call Us

540-682-4522

Mon-Fri 9am-5pm Eastern

Sundown Audio U18v2 18 inch Dual 4 ohm Subwoofer U Series(1750 watts)

Your Price:
$619.99
Add to wishlist
Checkout Secure

Great reasons to buy from us:

  • Image of Quality Assurance

    Quality Assurance

    Quality Assurance
  • Image of Expert Guidance

    Expert Guidance
  • Image of Customers Over Profits

    Customers Over Profits

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.

  • Features (U-10 / 12 / 15 / 18)

    • Black Aluminum 3” voice coil former for superior heat dissipation
    • High Temperature Round-Wire CCAW voice coil with high-temp black adhesive
    • Double stitched surround
    • Heavy duty cast basket
    • Spring loaded terminals accept up to 8 gauge
    • Stitched-on double-XL tinsel leads
    • Rear vented pole piece
    • Rear drilled gap-venting
    • Innovative high-velocity cast aluminum vented frame spacer ring
    • Magnet ID shorting ring
    • Top-Plate Cooling Channels
    • Cast Aluminum surround bolt-on rings
    • Optimized for small ported or bandpass enclosures

     

    Specifications

    • T/S SPECS U 18" D2 U 18" D4
      RE (Ohms) 3.8 6.1
      FS (Hz) 31.3 31.4
      VAS (L) 135.4 135.4
      Qes 0.37 0.42
      Qms 3.41 3.55
      Qts 0.33 0.38
      Le (mH) 2.62 3.97
      BL (NA) 29.9 35.3
      Mms (Grams) 444.1 441.3
      Cms (uM/N) 0.06 0.06
      Sens (dB @ 1w/1m) 92.3db 91.8db

       

      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 10.11″
        Outside Diameter 18.66″
        Cut-Out 16.69″
Shipping This item ships to
Delivery Estimated between TUE Feb 04 and TUE Feb 11. Will usually ship within 1-3 businesses day.

Description

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.

  • Features (U-10 / 12 / 15 / 18)

    • Black Aluminum 3” voice coil former for superior heat dissipation
    • High Temperature Round-Wire CCAW voice coil with high-temp black adhesive
    • Double stitched surround
    • Heavy duty cast basket
    • Spring loaded terminals accept up to 8 gauge
    • Stitched-on double-XL tinsel leads
    • Rear vented pole piece
    • Rear drilled gap-venting
    • Innovative high-velocity cast aluminum vented frame spacer ring
    • Magnet ID shorting ring
    • Top-Plate Cooling Channels
    • Cast Aluminum surround bolt-on rings
    • Optimized for small ported or bandpass enclosures

     

    Specifications

    • T/S SPECS U 18" D2 U 18" D4
      RE (Ohms) 3.8 6.1
      FS (Hz) 31.3 31.4
      VAS (L) 135.4 135.4
      Qes 0.37 0.42
      Qms 3.41 3.55
      Qts 0.33 0.38
      Le (mH) 2.62 3.97
      BL (NA) 29.9 35.3
      Mms (Grams) 444.1 441.3
      Cms (uM/N) 0.06 0.06
      Sens (dB @ 1w/1m) 92.3db 91.8db

       

      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 10.11″
        Outside Diameter 18.66″
        Cut-Out 16.69″

Shipping

Shipping This item ships to
Delivery Estimated between TUE Feb 04 and TUE Feb 11. Will usually ship within 1-3 businesses day.

REVIEW

Sundown Audio U18v2 18 inch Dual 4 ohm Subwoofer U Series(1750 watts)

Sundown Audio U18v2 18 inch Dual 4 ohm Subwoofer U Series(1750 watts)

$619.99
Add to wishlist
Sundown Audio U18v2 18 inch Dual 4 ohm Subwoofer U Series(1750 watts)

Sundown Audio U18v2 18 inch Dual 4 ohm Subwoofer U Series(1750 watts)

Your Price:
$619.99
2 visitors right now
5 visitors have this item in their cart right now
6 people have bought this item
26 % of people buy 2 or more
Sophia Purchase 2 minutes ago from Moscow, Russia
$199 Black Friday Mystery Box
Madison Purchase 1 minute ago from London, Great Britain
$1999 Black Friday Mystery Box-GUARANTEED ITEMS
Emma Purchase 1 minute ago from Amsterdam, Netherlands
$299 Black Friday Mystery Box
Jackson Purchase 1 minute ago from Berlin, Germany
$99 Black Friday Mystery Box
Aiden Purchase 1 minute ago from Rome, Italy
(B STOCK) Deaf Bonce Apocalypse AAB-7900.1D | 7900 Watt Power...
Ava Purchase 1 minute ago from Madrid, Spain
(B-Stock) Droppin HZ Car Audio 1 amp Rack
Liam Purchase 1 minute ago from
(B-STOCK) Droppin HZ Car Audio 2 Amp Rack
Mia Purchase 1 minute ago from
(B-STOCK) IOXUS UC31 Ultra Capacitor
Lucas Purchase 2 minutes ago from
(B-Stock) Sundown Audio SAZ-1500 Amplifier
Noah Purchase 1 minute ago from
(B-STOCK) XS Power HF1215 12v IntelliCharger
Zoe Purchase 2 minutes ago from
(B-STOCK) XS Power PSC60 Intellisupply Charger
Mason Purchase 2 minutes ago from
(B-STOCK) XS Power XMAX90-DIY
Ethan Purchase 1 minute ago from
(CLEARANCE) Ill Customz Angled 1/0 to 4ga Inputs
Logan Purchase 2 minutes ago from
2 Visitor Right Now
5 visitors have this item in their cart right now
Only 12 left! 2 people are viewing this, and 6 recently purchased it
6 People have recently bought this
mgctlbxN$MZP mgctlbxV$5.2.5 mgctlbxL$C