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Description

Sundown Audio V.4 12 D2

Sundown Audio E-Series v.4 12″ is a high-performance car audio subwoofer engineered to deliver deep, clean, and powerful bass with excellent reliability and thermal handling. The v.4 model features a heavily vented magnetic gap and pole piece, a double-stacked magnet for added motor strength, a high-temp 2.5″ copper voice coil, and stitched “Mini-XL” tinsel leads for durability under high power. With a dual voice coil design (dual 2 Ω or dual 4 Ω) and a class-leading 14 mm one-way linear Xmax, this 12″ subwoofer produces impressive low-end output when installed in a recommended ported enclosure, making it ideal for both daily listening and performance bass systems.


Tech Specifications

T/S Specs
RMS Power (D4)
750
RMS Power (D2)
750
Peak Power (D2)
1500
Peak Power (D4)
1500
RE D2 (Ohms)
4
RE D4 (Ohms)
6.1
FS D2 (Hz)
32.4
FS D4 (Hz)
36.6
VAS D2 (L)
1.595
VAS D4 (L)
1.284
Qes D2
0.569
Qes D4
0.715
Qms D2
6.479
Qms D4
5.857
Qts D2
0.523
Qts D4
0.637
Le D2 (mH)
4.506
Le D4 (mH)
5.671
BL D2 (NA)
17.274
BL D4 (NA)
19.574
Mms D2 (Grams)
212.008
Mms D4 (Grams)
212.808
Cms D2 (uM/N)
123.902
Cms D4 (uM/N)
99.701
Sens D2 (dB @ 1w/1m)
85.504
Sens D4 (dB @ 1w/1m)
84.964
Xmax D2
14MM
Xmax D4
14MM
Subwoofer Measurements
Product Sku
V.4 12
Displacement (Inches)
.08cu ft
Depth (Inches)
6.5″
Cutout (Inches)
11.125″
Motor Diameter (Inches)
6.37″
Ported Enclosure Specs
Ported Enclosure Size
1.75cu ft
Recommended Port Area
26sq in
Recommended Port Tuning
35hz
Sealed Enclosure Specs
Sealed Enclosure Size
Not Recommended
4th Order Enclosure Specs
4th Order Sealed Side
.75cu ft
4th Order Ported Side
2.25cu ft
4th Order Port Area
24sq in
4th Order Port Length
6″

Specifications

T/S Specs E v.4 12″ D2 E v.4 12″ D4
RE (Ohms) 4.030 6.130
FS (Hz) 28.480 28.373
VAS (L) 53.059 54.292
Qes 0.509 0.570
Qms 5.249 3.542
Qts 0.464 0.491
BL (NA) 17.576 20.249
Mms (Grams) 217.987 213.033
Cms (mm/N) 143.258 146.589
Sens (dB @ 1w/1m) 85.7 85.3
Xmax 14mm 14mm

 


About The Product

Through relentless research in our North Carolina Headquarters, Sundown optimized a 2.5” voice coil and a truly unique motor design to get the deepest possible bass response out of a 12” subwoofer.

The subwoofer showcases a distinctive motor design, featuring a heavily vented magnetic gap and solid pole piece, enabling exceptional thermal power handling. The spider itself is a high strength poly-cotton blend designed to handle the full capacity of the motor. To provide an additional level of ruggedness the spider is bolted down and glued to the frame. Its motor geometry allows for a remarkable 14mm one-way linear Xmax, delivering excursion equivalent to far larger cones.

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Questions and Answers

Q1: What power can the E-Series v.4 12″ subwoofer handle?
A1:
• 500 W RMS (continuous)
• ~1500 W peak power
Q2: What voice coil and impedance options are available?
A2: It comes with dual voice coils, available in dual 2 Ω (D2) or dual 4 Ω (D4) configurations for flexible wiring and amplifier matching.
Q3: What design features improve durability and cooling?
A3: The subwoofer features a vented magnetic gap & pole piece, double-stacked magnet, high-temp 4-layer copper voice coil, and stitched “Mini-XL” tinsel leads, all designed for improved cooling and rugged performance under high power.
Q4: What is the excursion and bass performance like?
A4: With a 14 mm one-way linear Xmax, the E-Series v.4 12″ delivers strong linear excursion comparable to larger drivers, providing controlled, high-output low bass.
Q5: What enclosure type is recommended?
A5: It is optimized for a ported (vented) enclosure, with a recommended net volume of ~1.75 cu ft tuned to ~35 Hz. Sealed enclosures are not recommended for this model.

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