DS18 EXL-X12.4D 12 inch SUBWOOFER Owner’s Manual

12″ SUBWOOFER
SUBWOOFER DE 12″ OWNER’S MANUAL

SPECIFICATIONS

Nominal Diameter……………………………………………………………………………………………………………. 12″ / 304.8 mm
Nominal Impedance…………………………………………………………………………………………………………………. 4+4 OHMS
RMS Power Handling……………………………………………………………………………………………………………… 1250 Watts
MAX Power Handling……………………………………………………………………………………………………………… 2500 Watts
Sensitivity (1w/1m) …………………………………………………………………………………………………………………………. 88 dB
Frequency Response …………………………………………………………………………………………………………… 30Hz-1.7KHz
Recommended Lo Pass Crossover ………………………………………………………………………………………………….100 Hz

MOTOR
Voice Coil Diameter…………………………………………………………………………………………………………. 2.57” / 65.2 mm
Voice Coil Former Material ……………………………………………………………………………………………… Black Aluminum
Winding Material……………………………………………………………………………………………………………………………………SV
Cone Material………………………………………………………………………………………… Non-Pressed Paper + Glass Fiber
Dust Cap Material………………………………………………………………………………………………………………………………… PPI
Surround Material ……………………………………………………………………………………………………………………………. Foam
Basket Material ………………………………………………………………………………………………………………………… Aluminum
Basket Color……………………………………………………………………………………………………………………………..Glossy Red
Magnet Material…………………………………………………………………………………………………………………………….. Ferrite
Magnet Weight………………………………………………………………………………………………………………………….2 x 105 Oz
Displacement Volume ………………………………………………………………………………………………………….3L / 0.105 ft3

THIELE & SMALL PARAMETERS

Equivalent Volume………………………………………………………………… Vas …………………………………….9.1L / 0.32 ft3
Excursion (one way)………………………………………………………………. Xmax ……………………………………………..30 mm
Free Air Resonance ……………………………………………………………….. Fs …………………………………………………… 56 Hz
Mechanical Factor…………………………………………………………………. Qms ……………………………………………….. 3.305
Electrical Factor…………………………………………………………………….. Qes …………………………………………………. 0.482
Total Factor …………………………………………………………………………… Qts………………………………………………….. 0.431
Moving Mass ………………………………………………………………………… MMS………………………………………… 307.124 g
Compliance……………………………………………………………………………. Cms …………………………………….. 0.025 mm/N
Bl Factor………………………………………………………………………………… Bl ………………………………………………….20.105
Voice Coil Inductance…………………………………………………………….. Le………………………………………………… 10.3mH
Diaphragm Area…………………………………………………………………….. Sd ………………………………………….. 490.87cm2
DC Resistance ……………………………………………………………………….. Re ………………………………………..3.7+3.7 OHM
Efficiency Bandwidth Product……………………………………………….. EBP…………………………………………………. 116.1

RECOMMENDED ENCLOSURES
Sealed Internal Volume ………………………………………………………………………………………………. Not Recommended
Ported Internal Volume ………………………………………………………………………………………………………..36L / 1.27ft3
Port Size *Square (WxHxLong)………………………………………………………………………………… 1.89″x12.28″x13.8″ /
Port Tunning Frequency………………………………………………………… Fb……………………………………………………. 50 Hz
Ported Box Output Response………………………………………………… F3 …………………………………………………… 42 Hz

MEASUREMENT

Overall Diameter ……………………………………………………………………………………………………………… 12.6” / 321 mm
Overall Depth …………………………………………………………………………………………………………………… 8.14” / 207 mm
Front Mount Baffle Cutout. ……………………………………………………………………………………………… 11.1” / 282 mm
Mounting Depth …………………………………………………………………………………………………………………….7” / 180 mm
Motor Diameter ……………………………………………………………………………………………………………….. 7.72″ / 196 mm

IT IS NOT RECOMMENDED TO USE A SEALED BOX

RECOMMENDED BOX DIMENSION

SINGLE SUBWOOFER PORTED BOX

Box External Dimensions(WxHxD): 23.62” x 13.78 x 11.60“ /600 mm x 350 mm x 294.6 mm| Top – Bottom: 23.62” x 11.60” /600 x 294.6 mm| 2
Material Thickness: 0.75” / 19mm| Front: 20.98” x 12.28”/ 532.9 x 312 mm| 1
Net Internal Volume: 1.27 ft3 / 36 L| Rear: 23.62” x 12.28” / 600 x 312 mm| 1
Tuning Frequency: 50 Hz| Left: 10.10” x 12.28”/ 256.6 x 312 mm| 1
Port Area: 23.25” / 150 CM2| Right: 10.85” x 12.28” / 275.6 x 312 mm| 1
Port Intel: 1.89” x 12.28” /  48.1 x 312 mm| Port: 8.21” x 12.28” / 208.5 x 312 mm| 1
Port Length: 13.82” / 351 mm| Port: 2.22” x 12.28” / 56.4 x 312 mm| 1

DOUBLE SUBWOOFER PORTED BOX

Box External Dimensions
(WxHxD): 33.46” x 13.78 x 14.10“ /850 mm x 350 mm x 358.2| Top – Bottom: 33.46” x 14.10” /850 x 358.2 mm| 2
Material Thickness: 0.75” / 19mm| Front: 28.65” x 12.28”/ 727.6 x 312 mm| 1
Net Internal Volume: 2 ft3 / 56.6 L| Rear: 33.46” x 12.28” / 850 x 312 mm| 1
Tuning Frequency: 48Hz| Left: 12.61” x 12.28”/ 320.2 x 312 mm| 1
Port Area: 50 inch2 / 322.6 CM2| Right: 13.35” x 12.28” / 339.2 x 312 mm| 1
Port Intel: 4.07” x 12.28” /  103.4 x 312 mm| Port: 8.54” x 12.28” / 216.8 x 312 mm| 1
Port Length: 20.61” / 523.6 mm| Port: 6.51” x 12.28” / 165.4 x 312 mm| 1

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References

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