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PRV 6MB550FT-4 Midbass

PRV 6MB550FT-4 Midbass


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PRV 6MB550FT-4 Midbass

PRV 6MB550FT-4 Midbass


  • 6.5" Mid Bass - 4 Ohm
  • Ferrite Magnet
  • 94.5dB - 550 Watts


In stock

  • 6.5" Mid Bass - 4 Ohm
  • Ferrite Magnet
  • 94.5dB - 550 Watts

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PRV Audio’s 6MB550FT-4 6.5″ Forte Series midbass was specially tailored to give you more Xmax and less distortion on mid low mid bass frequencies, with its Peak-to-Peak excursion going up to 14 mm (0.55″) this speaker can give a heck of a punch!

The tall 2″ voice coil ensures high heat dissipation and the necessary motor strength to deliver high sensitivity even on high power with the minimum distortion with recommended High Pass filter of 95Hz at 12 dB Octave.

All this attention to detail makes the 6MB550FT-4 one impressive driver. With 94.5 dB efficiency and 550 watts power handling this mid bass is ideally used in stage monitor, auditorium, touring, and outdoor systems. The smooth response from 85 to 7,500 Hz makes it perfect for 2 or 3-way designs.

  • Designed to handle low frequency at a high power output
  • Xmax 5.40 mm – 14 mm Peak-to-Peak excursion before damage
  • A huge magnet for increased efficiency and control
  • High power copper tinsel lead wire
  • Vented pole piece minimizes power compression and increases power handling
  • Rigid cast aluminum frame can withstand the use and abuse of pro and car audio
  • Natural paper cone and double-roll surround for smooth response

A rigid cast aluminum frame with spokes to minimize reflections back into the cone. To drive the voice coil, a large ferrite magnet is used with a very precise machined top and bottom plate.

The additional forced vent in the backplate for the coil allows this driver to handle up to 250 watts RMS without issue.

This mid bass will stand up to years of serious professional use!

Its special composed spider reduces distortion at a high excursion and double roll surround keep cone travel linear at high excursion, while its copper tinsel lead wire is capable of high current transfer makes this driver not only unique but gives all high-performance characteristics and high-quality components providing exceptional clarity, detail, and dynamics sound.

Its CCAW voice coil has 14.8 mm of winding wire, giving it an incredible 5.40 mm Xmax with capability of 14 mm Peak-to-Peak excursion before damage, which allows its cone to travel over 0.55″ giving a heck of punch.

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 improving the dampening properties of the moving assembly, thus considerably improving the smooth frequency response.

Technical Details


*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 provide 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.

  • Nominal Diameter 6″ (152 mm)
  • Nominal Impedance 4 Ohm
  • Nominal Power Handling* 275 Watts
  • Continuous Program Power (RMS)** 550 Watts
  • Max Peak Power*** 1100 Watts
  • Sensitivity 2.83V at 1m94.5 dB
  • Recommended Hi Pass Crossover" "For Full Power Handling 95 Hz** **12db Per Octave Crossover
  • Frequency Response at -10dB 85 – 7,500 Hz
  • Voice Coil Diameter 2″ (51 mm)
  • Voice Coil Wire CCAW
  • Voice Coil Winding Depth14.8 mm
  • Former Material Kapton
  • Magnetic Gap Depth 8.0 mm
  • Frame Material Die cast aluminum
  • Magnet Type Ferrite


  • Equivalent Volume
    • Vas
    • 6.59 l
  • Excursion (mathematical)**
    • Xmax
    • 5.40 mm
  • Free Air Resonance
    • Fs
    • 86.27 Hz
  • Mechanical Factor
    • Qms
    • 6.65
  • Electrical Factor
    • Qes
    • 0.35
  • Total Factor
    • Qts
    • 0.34
  • Cone Area
    • Sd
    • 143 cm²
  • Mechanical Mass
    • Mms
    • 14.78 g
  • BI Factor
    • Bl
    • 8.63 Tm
  • Dc Resistance
    • Re
    • 3.3 Ohm
  • Inductance
    • Le
    • 0.30 mH at 1 kHz
  • Mechanical Mass Without Air
    • Mmd
    • 13.81 g
  • Mechanical Compliance
    • Cms
    • 0.230 mm/N
***Xmax=(Voice coil winding depth-Magnetic Gap depth)/2+ Mgnetic Gap Depth/4


  • Overall Depth 3.64″ (92.5 mm)
  • Mounting Depth 3.33″ (84.5 mm)
  • Overall Diameter 6.48″ (164.5 mm)
  • Front Mount Baffle Cutout 5.59″ (142 mm)
  • Net Weight 5.95 Lbs (2.70 kg) unit
  • Shipping Weight 6.28 Lbs (2.85 kg)
  • Carton Dimensions WxLxH 7.08″ x 7.08″ x 4.53″ (180 x 180 x 115 mm)

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