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Sundown Audio SW-SACL12D4 + NVX XCA3K

2 pairs of 750W RMS 12" SA Classic Series Dual 4-ohm Subwoofer with Monoblock Amplifier with LED Remote Bass Knob

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• RMS Power: 750 watts
• Impedance: Dual 4 ohm
• Competition Grade Paper Cone
• Mount depth: 6.5"
• Sensitivity: 84.22 dB

• Includes 2 pairs of Subwoofer with amplifier

Learn more about the sacl12d4_xca3k
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List price $2711.95
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Description


Sundown Audio brand icon

Authorized dealer

Sundown Audio SA-12 Classic D4 12" (SA12CLD4)

2000W Peak (1000W RMS) 12" SA Classic Series Dual 4-ohm Car Subwoofer (SW-SACL12D4)
Quantity: 4

Product Details:

  • 12" Dual 4 ohm SA Classic Series Subwoofer
  • Power Handling:
    • Peak: 2000 watts
    • RMS: 1000 watts
  • Competition Grade Paper Cone
  • Treated Foam Surround
  • Optimized for small ported, sealed, and band-pass enclosures
  • Large aluminum Faraday ring for smooth acoustic response
  • High strength cast aluminum frame
  • Low distortion motor construction
  • Spring-loaded terminals for easy connection
  • Stitched-on “XL” tinsel lead wires
  • 2.5" High Temperature Aluminum Voice coil
  • 19 mm Xmax
  • Double Stacked magnet motor structure
  • Resonance Frequency (Fs): 33.96 Hz
  • Sensitivity: 84.22 dB
  • Recommended sealed box volume: 1.0 cubic feet
  • Recommended ported box volume: 1.75 cubic feet
  • Top-mount depth: 6.5"
  • Cutout diameter: 11.125"
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

  • Priced Individually

NVX XCA3K

3000W RMS Class D XC-Series Monoblock Korean Competition Amplifier with Bass Remote
Quantity: 1

Product Details:

  • XC-Series Competition Class D 1 ohm Stable Monoblock Amplifier
  • RMS Power Rating:
    • 4 ohm: 1000 watts x 1 channel
    • 2 ohm: 2000 watts x 1 channel
    • 1 ohm: 3000 watts x 1 channel
    • 1 ohm: 3000 watts x 2 (Linked)
    • 2 ohm: 6000 watts x 1 (Strapped)
  • 35V/4700µF High-Capacity Capacitors — Deliver enhanced ripple suppression and voltage stability under extreme loads
  • IRF1404 High-Efficiency MOSFETs — Used in only the most demanding amplifier designs for superior current handling and heat control
  • High-Current FDH45N50F Output Transistors — Distributes power more efficiently across multiple devices, reducing heat and ensuring reliable performance
  • Advanced Multi-Amp Strapping and Linking Technology
  • Synchronize Two or More Amplifiers Using an RJ11 Cable (Included)
  • LED Indicators: Power, Protect, and Clip Lights
  • Includes a Wired Bass Level Remote Control with Voltage and Temperature Display, Plus a Clip LED Indicator
  • Precision-Machined Tiffany RCA Inputs and Outputs
  • 4-Way Protection Circuitry: Thermal, Overload, Speaker Short, and DC Offset Protection
  • Input sensitivity: 0.2 - 6 volts
  • Frequency Response: 10 - 250 Hz
  • Total Harmonic Distortion (THD): <0.1%
  • Signal to Noise Ratio: 91 dB
  • Dampening Factor: >400
  • Variable low-pass filter: 35 - 250 Hz, 24 dB/octave
  • Subsonic filter: 10 - 50 Hz, 24 dB/octave
  • Operating Voltage: 9.5V - 16V
  • Fuse Rating: 300A
  • Dual 1/0 AWG Power and Ground Inputs
  • 4 AWG Speaker Outputs
  • Dimensions: 15-7/8" L x 8-3/8" W x 2-3/4" H
  • Made in Korea
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty
  • MFR #: XCA3K
product manual icon NVX XCA3K Owner's Manual

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Specifications & Details


Amplifier Power Specifications
RMS Power @ 4 ohms
1000 watts x 1 channel
RMS Power @ 2 ohms
2000 watts x 1 channel
RMS Power @ 1 ohm
3000 watts x 1 channel
Amplifier Specifications
Amplifier Class
D
Number of Channels
1 - Mono
Total Peak Power Output
6000 watts
Total RMS Power Output
3000 watts
Maximum Input Gauge Size
1/0 AWG
Minimum Impedance Unbridged
1 ohm
THD at Rated RMS Power
<0.1%
Speaker Level Inputs
No
Preamp Outputs
1 pair
Built-in Crossover
Low-Pass (LP)
Subsonic
Low-Pass Crossover Frequency
35 - 250 Hz
Subsonic Filter
10 - 50 Hz
Signal-to-Noise Ratio
91 dB
Remote bass/level controller
Yes
Subwoofer Specifications
Series
XC-Series
Subwoofer Size
12"
Voice Coil(s)
Dual
Impedance (Per Voice Coil)
4 ohm
RMS Power Handling
750 watts
Woofer Composition
Competition Grade Paper
Sensitivity
84.22 dB
Frequency Response
10 - 250 Hz
Xmax (millimeters)
19 mm
Top-Mount Depth (Mounting Depth)
6.5"
Cutout Diameter
11.125"
Recommended Enclosure Type
Bandpass
Ported / Vented
Sealed
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

Model Number:

SACL12D4_XCA3K

Weight:

252.00lbs

Internal SKU:

sacl12d4_xca3k

Internal Product ID:

226587

Customer Ratings & Reviews


Sundown Audio SW-SACL12D4 + NVX XCA3K thumbnail image

5 star
100%
4 star
0%
3 star
0%
2 star
0%
1 star
0%



Durability
5
Value
4.8
Features
5
Design
4.8
Usability
5

Customer Photos & Videos


Customer Reviews

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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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