QUANTUM AUDIO QWX4000/8D4 8″ 2000 RMS Woofer

Starting bid: $1.00

Up for auction is a single Quantum Audio 8″ Subwoofer. Looking to add that little extra something to your ride? This is the auction for you!! Good Luck and Happy Bidding!!

Item condition: New

Time left:

Auction ends: September 19, 2025 9:06 PM
Timezone: America/New_York

Estimated Shipping: $15.00 - $25.00
Non-Continental Estimate: $

*Estimated shipping varies based on customer distance from warehouse

Description

*SOLD AS EACH*

The engineers at Quantum Audio 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

 

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
Resonant Frequency (fs) 51.30Hz
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 Enclosure Specs:

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

Additional information

Weight 13 lbs

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