SUNDOWN AUDIO X Series v.3 8" (800-watts) -DVC-4OHM

MSRP: $449.00
Was: $318.99
Now: $271.14
(You save $177.86 )
(8 reviews) Write a Review
Adding to cart… The item has been added

Sundown Audio x8 D4 V.3 information:

The all-new and improved  x8 v3. This Sundown Audio 8 inch subwoofer is BETTER HIGHER MOTOR FORCE, QUIETER COOLING, MORE LINEAR AND RUGGED SPIDER, STRONGER CONE, AND MORE EFFICIENT SURROUND! This 8-inch subwoofer is powerful, strong, and delivers a ton of bass! 

Sundown Audio x8 V3 d2d4 2021

Sundown Audio X series 8 D2 / D4 TS Spec Chart:

T/S SPECS Xv3 8″ D2 Xv3 8″ D4
RE (Ohms) 4.0 6.0
FS (Hz) 46.770 48.506
VAS (L) 4.190 3.933
Qes 0.544 0.533
Qms 4.432 5.542
Qts 0.485 0.486
Le (mH) 2.01 3.41
BL (NA) 18.508 23.218
Mms (Grams) 158.641 157.131
Cms (uM/N) 72.995 68.515
Sens (dB @ 1w/1m) 80.8db 81.1db


 Sundown X8 v3 has can be but into almost any 8-inch subwoofer box, and sound great, we recommend using our ProFab enclosures if you are on a budget and if you want the best sound go with one of our custom made to order D4S 8 inch custom subwoofer box enclosures. 


Sealed Enclosure Not Recommended
Ported Enclosure 0.75-1.0 cu ft
Recommended Tuning 32Hz
Recommended Port Area 12-16 sq in
Displacement 0.13 cu ft
Depth 7.00″
Outside Diameter 8.70″
Cut-Out 7.36″



The x8 v3 is offered in Dual 2 ohm: Sundown audio X Series 8 v.3 D2

8 Reviews Hide Reviews Show Reviews

  • 5
    DownForSound Redeemed Themselves

    Posted by Charles T on Jun 8th 2021

    I ordered a pair of the sundown 8” xv3 my first order was sent to the wrong person, I mailed the wrong speakers back. In a week, I had the correct order. They were packaged nice, Ill be getting 2 more before install. Thanks D4S

  • 5
    They Bang

    Posted by Brent Ecton on Mar 27th 2021

    I’ve had a ton of Class B subs probably even class C setups in my vehicles over the years. This was an attempt at getting into a higher class. And boy was Johnathan right on these. I researched for months on end trying to find a sub that would fit behind my crew max seat, without going shallow mount. These subs are absolutely spectacular. I can see why sundown has the reputation they have. These subs are worth every penny, and I couldn’t pass on almost 50% off when I purchased them. Absolutely fantastic. Just wish I could fit more. Now that I have the alternator to run more. I want more. But that’s not because these aren’t loud enough. Just hooked me into wanting more

  • 5
    It can handle the power

    Posted by Jeremy J. on Jan 29th 2021

    This one is almost up there with the dd2508sw,I fried one of these in a 1cuft box,just didn't peak how i wanted so purchased 2 more of these because of that There in shared 1.5cuft now box and slapping off a,xtr2500.1dz witch is overkill.If your shopping for an 8 and they haven't came out with a fourth revision,I recommend this one!

  • 5
    Great product & Fast shipping

    Posted by Arturo martinez on Jul 27th 2020

    The subs hits hard and man do they ship fast !

  • 5

    Posted by Jeremy Fernandez on May 3rd 2020

    I got 2 of these for my 2014 double cab gmc sierra on a DD M1d with the mechman 320 amp alternator and 2 batteries. Holy shit they bang! I never would have thought a pair of 8s would hit like this so I'm beyond impressed! Wish I could fit 2 more...

  • 5
    Great beefy sub ordered the package with 2 ordered 2 more and gonna get one more

    Posted by Ahmet Lika on Mar 7th 2020

    These things hit hard people don’t expect them to be 8’s slam like 12’s. JP and his team will take great care of you as well.

  • 5
    Sundown Audio X8 V3's

    Posted by Ivan C. on Jan 24th 2020

    The X8's are a beast! The magnets are almost bigger than the woofer. I'm very impressed!! Thanks Down4Sound team!

  • 5
    Beast of a speaker

    Posted by Brian DeBoer on Dec 13th 2019

    Gets nice and low like you’d expect from a X series, what surprised me was the quality and musicality of it in the upper range of bass, it’s not just a bottom end monster, unbelievable quality sub