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For high output speaker systems, PRV Audio’s 12MB1000FT mid bass is an excellent option capable of amazing performance. A great new addition to the Forte Series, where more power handling and less distortion on mid low mid bass frequencies is the key.

All this attention to detail the 12MB1000FT makes it one impressive driver. With 97.5 dB efficiency and 500 watts power handling this mid bass will be It is ideally used in stage monitor, auditorium, touring and outdoor systems. The smooth response from 70 to 3,200 Hz is perfect for 2 or 3-way designs.


  • 3″ Inside/Out aluminum voice coil wound on fiberglass former for hi-temp performance, 8 ohms
  • Ventilated voice coil gap reduces power compression
  • High Xmax for more Mid bass output
  • 1,000 watts continuous program power rating makes high acoustical output
  • Excellent performance in 2-way or 3-way systems
  • Weather-resistant paper cone and dust cap

A rigid cast aluminum frame with narrow spokes to minimize reflections back into the cone. In addition, the frame includes force cooling system openings which allows airflow to cool the voice coil. To drive the voice coil, a large ferrite magnet is used with a very precise machined top and bottom plate. The additional dual forced vent in the back plate for the coil allows this driver to handle up to 500 watts RMS without issue.

Featuring a paper cone has a special high strength paper pulp composition designed to achieve the best possible linearity within the middle frequency range and a special cone treatment specifically dedicated to improve the dampening properties of the moving assembly, thus considerably improving the smooth frequency response.

The voice coil is wound on a 3″ glass fiber with aluminum wire keeping weight to a minimum for incredibly quick transient response. Engineered with 19 mm of winding depth, this inside/outside voice coil provides excellent thermal and mechanical durability.


Technical Details


Nominal Diameter 12″ (310 mm)
Nominal impedance 8 Ohms
Rated AES Power Handling (RMS)
500 Watts
Program Power 1000 Watts
Sensitivity 2.83V at 1m 97.5 dB
Recommended Hi Pass Crossover**
**For Full Power Handling
110 Hz**
**12db Per Octave Crossover
Frequency Range 70 – 3,200 Hz
Voice Coil Diameter 3″ (75 mm)
Voice Coil Wire Aluminum
Voice Coil Winding Depth 19.0 mm
Former Material Glass Fiber
Magnetic Gap Depth 10.5 mm
Frame Material Die Cast Aluminum


Equivalent Volume Vas 74.57 l
Excursion (mathematical)*** Xmax 6.87 mm
Free Air Resonance Fs 52.72 Hz
Mechanical Factor Qms 13.35
Electrical Factor Qes 0.38
Total Factor Qts 0.37
Cone Area Sd 573 cm²
Mechanical Mass Mms 55.94 g
Bl Factor Bl 16.54 Tm
Dc Resistance Re 5.7 Ohms
Inductance Le 1.00 mH at 1 kHz
Mechanical Mass Without Air Mmd 48.19 g
Mechanical Compliance Cms 0.162 mm/N

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


Overall Diameter 12.48”(317 mm)
Front Mount Baffle Cutout 11.16” (283.5 mm)
Mounting Depth 5.20”(132 mm)
Overall Depth 5.76”(146.5 mm)
Net Weight 16.8 Lbs (7.62 kg)
Shipping Weight 18.51 Lbs (8.40 kg)
Carton Dimensions W x L x H 13.79”x 13.79” x 7.09”
(350 x 350 x 180mm)

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