PRV Audio

PRV Audio 8MR450A Speakers

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  • Regular price $49.99
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PRV Audio’s ALTO Series were carefully crafted and voiced to reproduce a natural, smooth sound while remaining dynamic. To get the superior fidelity, a special composite cone is used to smooth frequency response and to keep the moving mass low, increasing the efficiency.

Meet the new improved version from 8MR400A

• New basket design implemented, reducing its size from 3.78? to 3.21? mounting depth
• Improvement on output sensitivity from 94 dB to 96 dB
• Gain on the vocal response from 100 Hz to 2000 Hz
• Increased on voice coil winding has improved power handle and raised its Xmax to 4.00 mm

All new features on the  8MR450A make it capable of high output and low distortion, this mid range is perfect for filling in the important mid range response in any high output sound system. Great Addition to the ALTO Series!


Technical Details


Nominal Diameter 8″ (203 mm)
Nominal impedance 8 Ohms
Rated AES Power Handling (RMS) 225 Watts
Program Power 450 Watts
Sensitivity 2.83V at 1m 96 dB
Recommended Hi Pass Crossover** **For Full Power Handling 140 Hz** **12db Per Octave Crossover
Frequency Response at -10dB 80 – 9,500 Hz
Voice Coil Diameter 1.5″ (38 mm)
Voice Coil Wire CCAW
Voice Coil Winding Depth 11.0 mm
Former Material Kapton
Magnetic Gap Depth 6.0 mm
Frame Material Stamped Steel


Equivalent Volume Vas 34.86 l
Excursion (mathematical)*** Xmax 4.00 mm
Free Air Resonance Fs 65.26  Hz
Mechanical Factor Qms 15.19
Electrical Factor Qes 0.57
Total Factor Qts 0.55
Cone Area Sd 241 cm²
Mechanical Mass Mms 13.78 g
Bl Factor Bl 7.58 Tm
Dc Resistance Re 5.8 Ohms
Inductance Le 0.257 mH at 1 kHz
Mechanical Mass Without Air Mmd 11.67 g
Mechanical Compliance Cms 0.432 mm/N

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


Overall Diameter 8.22″ (209 mm)
Front Mount Baffle Cutout 7.26″ (184.5 mm)
Mounting Depth 3.21″ (81.5 mm)
Overall Depth 3.50″ (89 mm)
Net Weight 4.63 Lbs (2.10 kg)
Shipping Weight 5.07 Lbs (2.30 kg)
Carton Dimensions W x L x H 8.66 x 8.66″ x 4.17″ (220 x 220 x 106 mm)