QWX4000-8D4

QWX4000-8D4

$219.95

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Our engineers have designed this subwoofer from the ground up to shake the ground up. The foam surround along with the die-cast aluminum vented basket allow for maximum excursion while the protective magnet cover gives the woofer a rugged yet stylish appearance.

  • 2″ High Temperature Voice Coil
  • Compressed Paper Cone
  • Double Stitched Foam Surround
  • Heavy Gauge Stamped Steel Basket
  • Proprietary Full Round PVC Gasket
  • Heavy Gauge Spring Terminals
  • Protective Magnet Cover

Physical Structure

Outside Diameter (A) 8.56″ (217.5mm)
Cutout Diameter (B) 7.20″ (183mm)
Mounting Depth (C) 4.88″ (124mm)
General Specifications
Structure 8″ (20.32cm) Woofer
Dynamic Power Handling 4000 Watts
Nominal Power Handling 2000 Watts
Impedance Dual 4Ω Voice Coil
Parameters
Sound Pressure Level (SPL) 83.7dB
XMAX 10.5mm
Resonant Frequency (fs) 51.30Hz
Compliance (Cms) 106.587 um/N
D.C. Voice Coil Resistance (Re) 6.8Ω
Mechanical Quality Factor (Qms) 3.122
Electrical Quality Factor (Qes) 0.478
Total Quality Factor (Qts) 0.415
Mass of Diaphragm/Coil (Mms) 90.280 g
Force Factor (BL) 9.87

Recommended Enclosures

Woofer Cut-out 7.20″ (183mm)
Mounting Depth 4.88″ (124mm)
Sealed Box 0.66 ft3 (18.68L)
Vented Box 1.16 ft3 (32.841L)
? Port Diameter 9.62 in (24.43 cm)
? Port length 16″ (40.64 cm)
? Tuning 38Hz
Dynamic Power 4000 Watts
Nominal Power 2000 Watts

Wiring Configuration

You can change the wiring configuration of your speakers (Series, Parallel and Series / Parallel) to match the impedance loads that maximizes the power output of you amplifier. Wiring the same woofer or multiple woofers in these three different wiring configurations will result in different impedance loads.

Series: Is the method of wiring of alternate positive with negative terminals (string method) (Illustration below)

Parallel:Is the method of wiring where you wire match 2 speaker terminals with positive to positive terminal and negative to negative. (Illustration below)

Series/Parallel: This configuration is a combination of both series and parallel. We recommend series for the terminal and parallel for the leads to amp. (Illustration below).

4 Ohm DVC Configuration