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Description

Sundown Audio SD-4 12 D2

The Sundown Audio SD-4 12″ D2 v.4 is a high-performance compact subwoofer engineered for powerful low-frequency output in space-limited car audio systems. Built using a lightweight neodymium motor structure, this 4th-generation SD-4 series subwoofer delivers excellent efficiency, fast transient response, and clean bass reproduction. It features a dual 2-ohm voice coil (D2) configuration for flexible wiring options, a high-temperature copper voice coil, reinforced cone, and a durable foam surround for long-term reliability. Optimized primarily for sealed enclosures, the SD-4 12″ v.4 is ideal for users who want tight, accurate, and musical bass without sacrificing trunk space.


Specifications

RE (Ohms) 3.93 7.01
FS (Hz) 26.0429 26.7489
VAS (L) 63.5142 64.3194
Qes 0.6187 0.7374
Qms 5.4253 5.5061
Qts 0.5554 0.6503
Le (mH) 6.2790 8.6610
BL (NA) 14.9216 17.9033
Mms (Grams) 214.4713 200.7540
Cms (uM/N) 174.1371 176.3448
Sens (dB @ 1w/1m) 84.33 83.97
Xmax 14.5mm 14.5mm
T/S SPECS SD-4 12″ D2 SD-4 12″ D4

Enclosure Specifications
Sealed Enclosure 0.8-1.0 cu ft
Ported Enclosure Not Recommended
Recommended Tuning N/A
Recommended Port Area N/A
Displacement 0.1 cu ft
Depth 4.91″
Outside Diameter 12.51″
Cut-Out 10.94″
Product Sku SD-4 12″

 


About The Product

The SD-4 series truly is a world-class sound quality woofer with low mounting depth, small box requirements, yet extraordinarily high power handling. It’s the ideal choice for anyone seeking a high-quality, low-mounting-depth subwoofer that performs hammers in small enclosures. With enhanced mechanical durability and superb sound quality, you get the perfect marriage of form and function.

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Questions and Answers

Q1: What size and voice coil configuration does this subwoofer use?

A1: The SD-4 v.4 is a 12-inch subwoofer with a dual 2-ohm (D2) voice coil configuration.

Q2: What type of enclosure is recommended for the SD-4 12″ v.4?

A2: It is primarily designed for sealed enclosures, providing tight and accurate bass response.

Q3: What makes the SD-4 series different from standard subwoofers?

A3: The SD-4 series uses a neodymium motor, allowing strong output, high efficiency, and reduced overall size and weight.

Q4: Is this subwoofer suitable for high-power mono amplifiers?

A4: Yes, the dual 2-ohm wiring allows flexible impedance options, making it compatible with high-power mono amps.

Q5: What type of bass performance can be expected?

A5: The SD-4 12″ v.4 delivers tight, clean, and controlled bass, ideal for sound-quality-focused car audio systems.


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