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Description

Sundown Audio X-8 v.4 D4

The X-8 v.4 is THE KING of standard cut-out size 8″ subwoofers and it sets the standard for others to follow.It builds on the legacy of the v1, v2, and v3 models but definitively out-performs all previous generations. The secret sauce is largely in the painstakingly FEA optimized spider and surround. It’s hard to overstate the impact of proper suspension design on a subwoofer but anyone who has used the X-8 v.4 can attest that we’ve nailed it here.Beyond the suspension – the X-8 v.4 is built on a newly revised version of our classic custom-tooled 8″ frame. It represents the absolute maximum performance possible on this frame platform. The motor and coil are capable of ~20mm of linear x-max one-way and around 2.4″ p-p before the coil leaves the gap (with a little beyond that before any physical bottom is reached).As with most of our subs it also features an aluminum magnet ID shorting ring for reduced inductive distortion as well as a few other secret Sundown tricks for distortion reduction!”


Specifications

T/S SPECS X V.4 8″ D2 X V.4 8″ D4
RE (Ohms) 3.6 6.0
FS (Hz) 41.299 44.150
VAS (L) 4.126 3.562
Qes 0.436 0.497
Qms 1.941 2.300
Qts 0.356 0.409
Le
BL (NA) 21.576 27.141
Mms (Grams) 215.153 220.090
Cms  68.389 59.044
Sens (dB @ 1w/1m) 80.1 79.8
Xmax 19mm 19mm

Enclosure Specifications
X v.4 8
Sealed Enclosure 0.3-.04cuft
Ported Enclosure 0.75-1.0 cu ft
Recommended Tuning 32hz
Recommended Port Area 12-16 sq in
Displacement 0.13 cu ft
Depth 7.56″
Outside Diam. 8.71″
Cutout 7.32″

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Questions and Answers

Q1: Is the Sundown Audio X-8 v.4 D4 a subwoofer or a speaker?

A1: It is a true subwoofer, designed specifically for deep low-frequency bass, not midrange or vocals.

Q2: What does D4 mean in X-8 v.4 D4?

A2: D4 means dual 4-ohm voice coils, allowing wiring options such as 2 ohm or 8 ohm, depending on amplifier setup.

Q3: Is this subwoofer suitable for small enclosures?

A3: Yes. The X-8 v.4 D4 is optimized for compact sealed and ported enclosures, making it ideal for space-limited installs.

Q4: Can this subwoofer be used in SPL systems?

A4: Yes. The X-Series v.4 is built for extreme excursion and high power handling, making it suitable for SPL and loud daily bass systems.

Q5: What type of amplifier is recommended for this subwoofer?

A5: A high-quality mono Class-D amplifier matched to the subwoofer’s RMS power rating and final wired impedance is recommended.


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