DS18 PSW12.4D 12" Dual Voice Coil Shallow Subwoofer

Owner's Manual

Specifications

Nominal Diameter	12" / 304.8 mm
Nominal Impedance	4+4 OHMS
RMS Power Handling	600 Watts
MAX Power Handling	1200 Watts
Sensitivity (1w/1m)	85 dB
Frequency Response	20-600 Hz
Recommended Lo Pass Crossover	80 Hz

Motor

Voice Coil Diameter: 3" / 76.2 mm
VC Former Material: Aluminum
Winding Material: Copper
Cone Material: Water Resistant PPI
Surround Material: Rubber
Basket Material: Steel
Basket Color: Matte Black
Magnet Material: Ferrite
Magnet Weight: 68 Oz
Displacement Volume: 0.95 L / 0.033 ft³

Thiele & Small Parameters

Equivalent Volume (Vas)	47.6 L / 1.68 ft³
Excursion (one way) (Xmax)	9.5 mm
Free Air Resonance (Fs)	31 Hz
Mechanical Factor (Qms)	3.821
Electrical Factor (Qes)	0.932
Total Factor (Qts)	0.749
Moving Mass (Mms)	201.2 g
Compliance (Cms)	0.13 mm/N
BI Factor (Bl)	9
Voice Coil Inductance (Le)	2.5 mH
Diaphragm Area (Sd)	510.71 cm²
DC Resistance (Re)	3.8+3.8 OHMS
Efficiency Bandwidth Product (EBP)	33.2

Recommended Enclosure

Sealed Internal Volume (minimum): 28 L / 1 ft³

Sealed Box Output Response (F3): 40 Hz

Measurements

Overall Diameter	12.2" / 310 mm
Overall Depth	3.9" / 100 mm
Front Mount Baffle Cutout	10.6" / 270 mm
Mounting Depth	3.3" / 84 mm
Motor Diameter	8" / 203 mm

Diagram Description: Subwoofer Dimensions and Frequency Response

Subwoofer Dimensions: A circular diagram shows the overall diameter of 12.2" (310 mm). A side profile diagram illustrates the overall depth of 3.9" (100 mm), the mounting depth of 3.3" (84 mm), and the front mount baffle cutout diameter of 10.6" (270 mm). The motor diameter is shown as 8" (203 mm).

SPL Frequency Response Graph: A line graph plots Sound Pressure Level (SPL) in decibels (dB) on the Y-axis against Frequency in Hertz (Hz) on the X-axis. The graph shows a typical subwoofer response curve, starting around 20 Hz, rising to a peak, and then gradually decreasing as frequency increases, extending up to 600 Hz. The peak response is observed in the lower to mid-bass frequencies.

Warranty

For more information on the warranty policy, please visit the DS18 website at DS18.com.

DS18 reserves the right to change products and specifications at any time without notice. Images may or may not include optional equipment.

Warning

⚠️ WARNING: Cancer and Reproductive Harm. Visit www.P65Warning.ca.gov for more information.

Recommended Box Dimensions

Diagram Description: Enclosure Dimensions and Wood Cuts

External Box Dimensions: The recommended enclosure has external dimensions of 25.59" (650 mm) in width, 13.78" (350 mm) in height, and 6.98" (177.3 mm) in depth. The material thickness for the box construction is specified as 1/2" (15 mm).

Net Internal Volume: The recommended net internal volume for the enclosure is 28.3 Liters (1 ft³).

Wood Cuts: The following wood cuts are required for construction:

Top - Bottom: 2 pieces, each measuring 25.59" (650 mm) x 6.98" (177.3 mm)
Front - Rear: 2 pieces, each measuring 25.59" (650 mm) x 10.31" (262 mm)
Left - Right: 2 pieces, each measuring 5.80" (147.3 mm) x 12.60" (320 mm)

A circular diagram indicates a cutout diameter of 10.79" (274 mm) for the subwoofer mounting.

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