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Sundown Audio UV.2 15" D4 + NVX XCA3K

1 pair of 1750W RMS 15" U Series Dual 4-ohm Car Subwoofer with Monoblock Amplifier with LED Remote Bass Knob

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• RMS Power: 1750 watts
• Impedance: Dual 4 ohm
• Mount depth: 9"
• Sensitivity: 87.32 dB

Learn more about the uv215d4_xca3k
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List price $2687.97
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-20%

$2139.97

 with warranty
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Description


Sundown Audio brand icon

Authorized dealer

Sundown Audio U-15 v.2 D4 15" (U15V2D4)

4000W Peak (2000W RMS) 15" U Series Dual 4-ohm Car Subwoofer (SW-UV215D4)
Quantity: 2

Product Details:

  • 15" Dual 4 ohm U Series Subwoofer
  • Power Handling:
    • Peak: 4000 watts
    • RMS: 2000 watts
  • Pressed Paper Cone
  • Double-Stitched Surround
  • Optimized for small ported or bandpass enclosures
  • Heavy-duty cast basket for added durability
  • Spring-loaded terminals accept up to 8-gauge wire
  • Stitched-on heavy-duty tinsel leads for easy connection
  • Solid pole with vent channels and aluminum shorting ring cap
  • Rear gap-venting and top cooling channels
  • 3" High Temperature Copper Voice coil
  • Aluminum voice coil former for superior heat dissipation
  • 30 mm Xmax
  • Double Stacked Ferrite magnet motor structure
  • Resonance Frequency (Fs): 36.4 Hz
  • Sensitivity: 87.31 dB
  • Recommended sealed box volume: 2 cubic feet
  • Recommended ported box volume: 3 cubic feet
  • Top-mount depth: 9"
  • Cutout diameter: 14.1"
  • 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
15"
Voice Coil(s)
Dual
Impedance (Per Voice Coil)
4 ohm
RMS Power Handling
1750 watts
Woofer Surround
Double-Stitched
Sensitivity
87.32 dB
Frequency Response
10 - 250 Hz
Xmax (millimeters)
30 mm
Top-Mount Depth (Mounting Depth)
9"
Cutout Diameter
15.6"
Recommended Enclosure Type
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:

UV215D4_XCA3K

Weight:

142.00lbs

Internal SKU:

uv215d4_xca3k

Internal Product ID:

226620

Customer Ratings & Reviews


Sundown Audio UV.2 15

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



Durability
5
Value
4.5
Features
5
Design
5
Usability
5

Customer Reviews

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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


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




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Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.