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Description

Sundown Audio X-15 v.3 D2

Designed with an extended pole piece and an incredible four inches of peak-to-peak excursion, the X v.3 is engineered for ultra-deep bass and high power handling. Engineered to set a new standard in the low-frequency/small-ported-box subwoofer category, the X Series can also work in up to a 50% larger enclosure if you desire even more low-end extension. The X v.3 series differentiates itself with its incredibly linear suspension, ensuring the lowest level of bass extension in a small enclosure while maintaining extremely low levels of distortion. Notably, the v.3 series features a much larger motor structure (220mm vs. 190mm on the V.1 series), improved motor ventilation, and an all-new Mega-Roll v.2 surround, providing a more linear and rugged update to the world-famous Mega-Roll v.1 surround design.


Specifications

T/S SPECS X V.3 15″ D1 X V.3 15″ D2
RE (Ohms) 1.4 3.2
FS (Hz) 31.418 31.423
VAS (L) 45.907 45.924
Qes 0.486 0.561
Qms 2.562 2.801
Qts 0.409 0.468
Le (mH)
BL (NA) 15.518 21.831
Mms (Grams) 423.721 423.436
Cms (uM/N) 60.563 60.585
Sens (dB @ 1w/1m) 86.5dB 85.9dB
Xmax 30mm 30mm

Enclosure Specifications
X v.3 15
Sealed Enclosure N/A
Ported Enclosure 4.25 cu ft
Recommended Tuning 32hz
Recommended Port Area 68 sq in
Displacement 0.22 cu ft
Depth 11.6″
Outside Diam. 15.51″
Cutout 13.83″

 

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Questions and Answers

Q1: Is the Sundown Audio X-15 v.3 D2 a subwoofer or a speaker?

A1: It is a true subwoofer, built specifically for deep and powerful low-frequency bass, not mids or vocals.

Q2: What does D2 mean in X-15 v.3 D2?

A2: D2 means dual 2-ohm voice coils, allowing wiring options such as 1 ohm or 4 ohm, depending on amplifier configuration.

Q3: Is this subwoofer suitable for SPL and competition systems?

A3: Yes. The X-Series v.3 is engineered for extreme excursion and very high power handling, making it ideal for SPL and competition-level builds.

Q4: Can the X-15 v.3 D2 be used in sealed and ported enclosures?

A4: Yes. It performs well in large sealed enclosures for controlled bass and ported enclosures for maximum output.

Q5: What amplifier is recommended for the X-15 v.3 D2?

A5: A high-quality high-power mono Class-D amplifier matched to the final wired impedance is recommended for best performance.


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