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Sundown Audio SW-SACL12D4 + NVX XCA3K thumbnail image
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5 star
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4 star
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Durability
5
Value
4.8
Features
5
Design
4.8
Usability
5

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The following review is for SW-SACL12D4, which is a part of the bundle you are viewing.
By Steven on June 20, 2025 Checkmark Icon Verified purchase

1 found this helpful


Beast of an amp

The following review is for XCA3K, which is a part of the bundle you are viewing.

This amp is a powerhouse. Just make sure you have the power to run it. I added a 250 amp alternator, big 3 wiring upgrade, and added x2 extra batteries and I still get voltage drop when the bass hits. Although it's above 12 v ( drops from 14.4 to 14 down to 13.3, sometimes lower, depending on the track. Super sleek design, the bass knob looks sleek as well. Excellent Korean amplifier. This amp caps off and showcases my all nvx build beautifully.

By James on April 21, 2026 Checkmark Icon Verified purchase


Great value on a great sub

The following review is for SW-SACL12D4, which is a part of the bundle you are viewing.

Sub arrived on time and looks and sounds great! Good price too!! I ordered two I only received one so far so hopefully the other shows up tomorrow and I'll really be able to see what they can do!

By Tyler on February 4, 2026 Checkmark Icon Verified purchase
2018 Hyundai Elantra


This amp is a beast

The following review is for XCA3K, which is a part of the bundle you are viewing.

Highly underrated (so be careful), great looking, great sounding amplifier for your 3k ... or even 5 k needs (check the dyno video). I'm thoroughly impressed by it especially with the clarity and power. NVX has been my GO TO brand since I came across them and this amp is no disappointment regardless of what you put it up against.

By Marcus on August 22, 2025 Checkmark Icon Verified purchase


Great sub!

The following review is for SW-SACL12D4, which is a part of the bundle you are viewing.

This sub is amazing, sounds great when given enough power! Put this sub in a ported box tuned to 32hz, give it the right box and good amp and it’ll sound great!

By Angel on June 28, 2025 Checkmark Icon Verified purchase


Good value and sounds great.

The following review is for SW-SACL12D4, which is a part of the bundle you are viewing.

I bought a JL Audio W3 12” high output box and sub package and the JL sub blew within 2 minutes of use. Powered by an Audio Control 1.800 . No clipping and gain just barely reached 1/2. I know, I know, it was too much power. But really a $450 sub and has a paper/ plastic voice coil.
We bought this sub (Sundown SA Classic 12”) and it slams. We put it in the JL HO box and it fit. Just barely. I did have to sand the opening just a bit as the Sundown needed 1/10 of an inch bigger opening. At half the price of the the JL I learned my lesson. This sub with the AC 800 watt amp flexes the roof of the car pretty good. Sounds great. Tight clean bass.

By Larry on May 3, 2025 Checkmark Icon Verified purchase


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