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Out of stock
  • 8″ Mid Bass – 4 Ohms
  • Ferrite Magnet
  • 93 dB – 450 Watts

This product is discontinued
and no longer available.

SKU: 8MB450-4 Category: Tag:



The 8MB450-4 (4 ohms), 8″ PRV Audio Pro Audio Midbass Woofer offers smooth lower response through a punchy mid bass range and the frequency response that takes your applications smoothly through the 7,000Hz range. The 2″ voice coil, durable spider suspension and the woven surround all supported by the sturdy steel basket ensures its ability to withstand long hours of operation without compromising efficiency of the speaker. A thick, yet light rigid cone ensures accurate response and power handling.

The size and punch of this pro audio driver makes it perfect for a mid range driver in a 3 way loudspeaker cabinet or woofer in your studio monitor and even works great in home Hi-Fi installs. Also a great car audio woofer!


  • Nominal Impedance: 4 Ohms
  • Rated AES Power Handling (RMS): 225 Watts
  • Program Power: 450 Watts
  • Sensitivity (1W/1m): 93 dB
  • Voice Coil Diameter: 2″

New Improved Version 2 – Available now –8MB450-4 V2 – more efficiency and wider frequency response

WARNING: Cancer and Reproductive Harm – www.p65warnings.ca.gov

Technical Details


Nominal Diameter 8″ (203 mm)
Nominal impedance 4 Ohms
Rated AES Power Handling (RMS)
225 Watts
Program Power 450 Watts
Sensitivity 2.00V at 1m 93 dB
Recommended Hi Pass Crossover**
**For Full Power Handling
120 Hz**
**12db Per Octave Crossover
Frequency Response at -10dB 70 – 6,500 Hz
Voice Coil Diameter 2″ (50 mm)
Voice Coil Wire CCAW
Voice Coil Winding Depth 12.5 mm
Former Material Kapton
Magnetic Gap Depth 5.5 mm
Frame Material Stamped Steel



Equivalent Volume Vas 18.88 l
Excursion (mathematical)*** Xmax 4.87 mm
Free Air Resonance Fs 69.97 Hz
Mechanical Factor Qms 24.30
Electrical Factor Qes 0.93
Total Factor Qts 0.90
Cone Area Sd 227 cm²
Mechanical Mass Mms 19.7 g
Bl Factor Bl 5.61 Tm
Dc Resistance Re 3.4 Ohms
Inductance Le 0.38 mH at 1 kHz
Mechanical Mass Without Air Mmd 17.77 g
Mechanical Compliance Cms 0.262 mm/N

***Xmax=(Voice coil winding depth-Magnetic Gap depth)/2+ Mgnetic Gap Depth/4


Overall Diameter 8.27” (210 mm)
Front Mount Baffle Cutout 7.17” (182 mm)
Mounting Depth 3.37” (85 mm)
Overall Depth 3.62” (92 mm)
Net Weight 2.35 Lbs (1.06 kg)
Shipping Weight 2.77 Lbs (1.25 kg)
Carton Dimensions W x L x H 9.05” x 9.05” x 4.72”
(230 x 230 x 120 mm)



PRV AUDIO 8MB450-4 Loudspeaker

WARNING: Cancer and Reproductive Harm – www.p65warnings.ca.gov

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