QW3000/8D4

QW3000/8D4

$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.

  • 2.5″ / 63.5mm 4 Layer Aluminum 4 Ohm DVC
  • Heavy Gauge Stamped Steel Basket
  • High Temperature Voice Coil
  • QEMT Aluminum Voice Coil Former
  • High-Excursion Foam Surround
  • Compressed Paper Cone
  • Injection Molded PP Dust Cap
  • Proprietary Full Round PVC Gasket
  • Heavy Gauge Spring Terminal

Physical Structure

Outside Diameter (A) ?8.43″ (214mm)
Cutout Diameter (B) 7.17″ (182mm)
Mounting Depth (C) 4.88″ (124mm)
General Specifications
Structure 8″ (20cm) Woofer
Dynamic Power Handling 3000 Watts
Nominal Power Handling 1000 Watts
Impedance Dual 4Ω Voice Coil
Parameters
Resonant Frequency (fs) 40.731Hz
D.C. Voice Coil Resistance (Re) 6.4Ω
Mechanical Quality Factor (Qms) 4.149
Electrical Quality Factor (Qes) 0.585
Total Quality Factor (Qts) 0.513
Mass of Diaphragm/Coil (Mms) 133.306 g
Force Factor (Bl) 19.316
Sound Pressure Level (SPL) 81.1dB

Recommended Enclosures

Woofer Cut-out 7.17″ (182mm)
Mounting Depth 4.88″ (124mm)
Sealed Box 0.6 ft3 (16.99L)
Vented Box 0.9 ft3 (25.49L)
Port Diameter 7.7 in (45.6 cm)
Port length 14.7″ (37.44 cm)
Tuning 38Hz
Dynamic Power 3000 Watts
Nominal Power 1000 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

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