About: PRV Audio 8MB450-4 v2 8" 450W RMS Midbass Loudspeaker - 4 Ohm (Each) 

The 8MB450 v2, 8″ PRV Audio Pro Audio Mid bass Woofer offers smooth lower response through a punchy mid bass range and the frequency response that takes your applications smoothly through the 7,500 Hz 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!

Product Highlights: 

• Smooth midrange combined with strong midbass punch
• Rated AES Power Handling (RMS): 225 Watts
• Designed for small sealed cabinets
• Ideal for use as replacement speaker for studio monitors, hi-fi cabinets, or car audio installations

Specifications: 

• Nominal Diameter: 8″ (203 mm)
• Nominal impedance: 4 Ohms

• Nominal Power Handling: 225 Watts

• Continuous Program Power (RMS): 450 Watts
• Max Peak Power: 900 Watts
• Sensitivity 2.00V at 1m: 93.5 dB
• Frequency Response at -10dB: 75 – 7,500 Hz
• Voice Coil Diameter: 2″ (50 mm)
• Voice Coil Wire: CCAW
• Voice Coil Winding Depth: 12.0 mm
• Former Material: Kapton
• Magnetic Gap Depth: 6.0 mm
• Frame Material: Stamped Steel
• Sold individually 

Thiele-Small Parameters: 

• Equivalent Volume (Vas): 17.02 l
• Xmax: 4.5 mm
• Free Air Resonance (Fs): 76.59 Hz
• Mechanical Factor (Qms): 22.84
• Electrical Factor (Qes): 0.92
• Total Factor (Qts): 0.88
• Cone Area (Sd): 241 cm²
• Mechanical Mass (Mms): 20.48 g
• Bl Factor (Bl): 6.19 Tm
• Dc Resistance (Re): 3.6 Ohms
• Inductance (Le): 0.17 mH at 1 kHz
• Mechanical Mass Without Air (Mmd): 18.37 g
• Mechanical Compliance (Cms): 0.210 mm/N

Mounting and Shipping Information: 

• Overall Diameter: 8.27” (210 mm)
• Front Mount Baffle Cutout: 7.17” (182 mm)
• Mounting Depth: 3.31” (84 mm)
• Overall Depth: 3.61” (91.5 mm)
• Weight: 4.10 Lbs (1.86 kg)

Note:  

• Nominal power handling is defined as the maximum RMS power that the speaker can handle in a 2-hour test with a pink noise with 6dB of crest factor and a bandpass filter with 12db/oct tuned in its usable frequency range.
• Continuous Program Power (RMS) is the maximum power that the speaker can handle considering a regular musical program using our recommended filters, this power can be used to define the optimum amplifier power to avoid a clean signal without clipping or saturation.
• Max Peak Power is the maximum power operation for the speaker, this power is allowed just for a few fractions of a second, usually found just on the peaks of the music. Keeping this power for a little longer timer will damage the speaker.