This is an 8-inch car subwoofer with a dual voice coil and a nominal impedance of 2 + 2 ohms. It is rated for 450 W RMS and 900 W max power. It works in both sealed and ported boxes.
A 2-inch aluminum voice coil with copper winding drives a paper cone. A large foam surround gives long excursion and keeps the cone controlled near maximum power. The stamped steel basket has a matte black finish and carries DS18 logos on the frame, magnet boot, motor and dust cap.
- Nominal size
- 8 in
- Impedance
- 2 + 2 ohms (dual voice coil)
- RMS power
- 450 W
- Max power
- 900 W
- Sensitivity
- 82 dB (1 W/1 m)
- Frequency response
- 33 Hz - 200 Hz
- Low-pass crossover
- 120 Hz recommended
- Voice coil
- 2 in / 50.8 mm, aluminum former, copper winding
- Cone
- Paper
- Dust cap
- PPI
- Surround
- Foam
- Basket
- Steel, matte black
- Magnet
- Ferrite, 55 oz
- Displacement
- 0.03 ft³
- Equivalent volume
- 5.74 L
- Excursion
- 18 mm (one way)
- Free air resonance
- 40 Hz
- Q factors
- Mechanical 4.38, electrical 0.66, total 0.57
- Moving mass
- 112.72 g
- Compliance
- 105.133 m/N
- BL factor
- 6.67
- Cone area
- 196 cm²
- DC resistance
- 1.8 + 1.8 ohms
- Efficiency bandwidth product
- 60.6
- Overall diameter
- 8.42 in / 214 mm
- Overall depth
- 5.3 in / 134 mm
- Cutout diameter
- 7.24 in / 184 mm (front mount baffle)
- Mounting depth
- 4.4 in / 111.4 mm
- Motor diameter
- 5.7 in / 145 mm