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  • 12″ Midbass – 4 Ohm
  • Ferrite Magnet
  • 97.5 dB – 1000 Watts


In stock


SKU: 12MB1000FT-4 Category: Tags: ,



For high output speaker systems, PRV Audio’s 12MB1000FT-4 midbass 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 in the 12MB1000FT-4 makes it one impressive driver. With 97.5 dB efficiency and 1000 watts of continuous program power (RMS), this mid bass is ideally suited for car audio systems, making it easier to match a car audio amplifier to only 2 or 4 speakers wired in parallel. Also, its smooth response from 70 to 3,200 Hz makes it perfect for 2 or 3-way designs.

Installation tips:

  • 3″ Inside/Out aluminum voice coil wound on fiberglass former for hi-temp performance, 4 Ohm
  • Ventilated voice coil gap reduces power compression
  • High Xmax for more Midbass 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
  • Also Available at 8 Ohm

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 with a very precise machined top and bottom plate has been used. The additional dual forced vent in the back plate of the coil allows this driver to handle up to 1000 watts RMS without issue.

Features a special high strength pulp composition paper cone designed to achieve the best possible linearity within the middle frequency range, which, together with a protective cone treatment dedicated to enhancing the dampening properties of the moving assembly, considerably improves its smooth frequency response.

The voice coil is wound on a 3″ glass fiber with aluminum wire, keeping weight to a minimum for an incredibly quick transient response. Engineered with 17.5 mm of winding depth, this inside/outside voice coil provides excellent thermal and mechanical durability.

Technical Details


Nominal Diameter 12″ (310 mm)
Nominal impedance 4 Ohm
Nominal Power Handling* 500 Watts
Continuous Program Power (RMS)** 1000 Watts
Max Peak Power*** 2000 Watts
Sensitivity 2.83V at 1m 97.5 dB
Recommended Hi Pass Crossover
For Full Power Handling
110 Hz
12db Per Octave Crossover
Frequency Response 70 – 3,200 Hz
Voice Coil Diameter 3″ (76 mm)
Voice Coil Wire Aluminum
Voice Coil Winding Depth 17.5 mm
Former Material Glass Fiber
Magnetic Gap Depth 10.5 mm
Frame Material Die Cast Aluminum
12MB1000FT-4 Frequency Response

*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.


Equivalent Volume Vas 95.49 l
Excursion (mathematical)*** Xmax 6.13 mm
Free Air Resonance Fs 45.67 Hz
Mechanical Factor Qms 8.55
Electrical Factor Qes 0.28
Total Factor Qts 0.27
Cone Area Sd 573 cm²
Mechanical Mass Mms 58.23 g
Bl Factor Bl 14.52 Tm
Dc Resistance Re 3.5 Ohms
Inductance Le 0.71 mH at 1 kHz
Mechanical Mass Without Air Mmd 50.47 g
Mechanical Compliance Cms 0.209 mm/N

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

12MB1000FT-4 Impedance


Overall Diameter 12.40” (315 mm)
Front Mount Baffle Cutout 11.10” (282 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 14.17”x 14.17” x 7.68”
(360 x 360 x 195mm)
WARNING: Cancer and Reproductive Harm – our Return Policy.

Customer Reviews

Based on 4 reviews
Sergio Villafuerte


Norberto Reyes

Fast delivery 🚚 and great service

Mark Fortag

Well made not a direct replacement for the jbl’s that I had to replace last minute but with a little modification to the cabinets they work great and sound awesome

Dennis Stadler
Great Speakers, Great price, Great quality

Needed replacement speakers and found these to be the ones. They have performed as expected and sound awesome.


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