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PRV Audio 6MB550FT Forte Series 6" Midbass Speaker 8 Ohm

PRV AudioPart # 294-2949
Model: 6MB550FT

The PRV Audio 6MB550FT is a 6" midbass loudspeaker from the Forte Series, engineered for high-output applications requiring punchy, low-distortion performance. It delivers robust sound suitable for various setups including stage monitors and touring systems. Its compact 3.33" mounting depth allows for versatile installation without demanding significant space.

Key Features

  • 2" CCAW voice coil on fiberglass former for high power handling
  • 14 mm peak-to-peak excursion delivers deep, punchy bass
  • Cast aluminum frame provides structural integrity and reduces resonance
  • Frequency response of 85–7,500 Hz covers critical midrange frequencies
  • Vented pole piece dissipates heat to minimize power compression​
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MSRP: $112.39
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Overview

PRV Audio 6MB550FT Forte Series 6" Midbass Speaker 8 Ohm

PRV Audio 6MB550FT Forte Series 6" Midbass Speaker 8 Ohm

PRV Audio’s 6MB550FT 6.5″ Forte Series midbass is specifically designed to deliver greater Xmax and reduced distortion in mid to low midbass frequencies. With a Peak-to-Peak excursion of up to 14 mm (0.55″), this speaker packs a serious punch!

The tall 2″ voice coil provides excellent heat dissipation and strong motor force, enabling high sensitivity at high power levels with minimal distortion when used with a recommended High Pass filter of 95Hz at 12 dB per octave.  

These refined design elements make the 6MB550FT a standout performer. With 94.5 dB efficiency and 275 watts of power handling, this midbass is ideal for use in stage monitors, auditoriums, touring rigs, and outdoor sound systems. Its smooth frequency response from 85 to 7,500 Hz makes it well-suited for both 2- and 3-way speaker designs.

  • Designed to handle low frequencies with high power output
  • Xmax 5.40 mm – 14 mm Peak-to-Peak excursion before damage 
  • Large magnet enhances efficiency and control
  • High-power copper tinsel lead wire 
  • Vented pole piece reduces power compression and boosts power handling 
  • Durable cast aluminum frame built for demanding pro and car audio use 
  • Natural paper cone with double-roll surround delivers smooth response

A sturdy cast aluminum frame with open spokes helps reduce reflections directed back into the cone. A large ferrite magnet, paired with precisely machined top and bottom plates, drives the voice coil with accuracy. 

An extra forced vent in the backplate enhances cooling, allowing this driver to handle up to 550 watts RMS with ease.

This midbass is built to withstand years of demanding professional use! 

 Its specially engineered spider minimizes distortion during high excursion, while the double roll surround maintains linear cone movement at high output. The copper tinsel lead wire supports high current transfer, combining performance-focused design and premium components to deliver outstanding clarity, detail, and dynamic sound.

Its CCAW voice coil features 14.8 mm of winding, delivering an impressive 5.40 mm Xmax and supporting up to 14 mm Peak-to-Peak excursion before damage—allowing the cone to move over 0.55″ for powerful punch. 

The paper cone is crafted from a high-strength pulp blend engineered for optimal linearity in the midrange, and treated with a special coating that enhances damping characteristics, significantly improving the smoothness of the frequency response.

Specifications

  • Nominal Diameter: 6″ (152 mm)
  • Nominal impedance: 8 Ohm
  • Nominal Power Handling:* 275Watts
  • Continuous Program Power (RMS):** 550 Watts
  • Max Peak Power:*** 1100 Watts
  • Sensitivity 2.83V at 1m: 94.5 dB
  • Recommended Hi Pass Crossover: 95 Hz
    For Full Power Handling — 12db Per Octave Crossover
  • Frequency Response: 85 – 7,500 Hz
  • Voice Coil Diameter: 2″ (51 mm)
  • Voice Coil Wire: CCAW
  • Voice Coil Winding Depth: 14.8 mm
  • Former Material: Kapton
  • Magnetic Gap Depth: 8.0 mm
  • Frame Material: Die Cast Aluminum
  • Overall Diameter: 6.48″ (164.5 mm)
  • Front Mount Baffle Cutout: 5.59″ (142 mm)
  • Mounting Depth: 3.33″ (84.5 mm)
  • Overall Depth: 3.64″ (92.5 mm)
  • Net Weight: 5.95 Lbs (2.70 kg)

*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.

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Product Details

BrandPRV Audio
Model6MB550FT
Part Number294-2949
UPC602938022798
Unit of MeasureEach
Weight6.3

Product Specifications

Nominal Diameter6"
Power Handling (RMS)275 Watts
Power Handling (MAX)550 Watts
Impedance8Ω
Frequency Response85 to 7,500Hz
Sensitivity94.5dB 2.83V/1m
Voice Coil Diameter2"

Thiele-Small Parameters

Resonant Frequency (Fs)84.9Hz
DC Resistance (Re)5.6Ω
Voice Coil Inductance (Le)0.42mH
Mechanical Q (Qms)3.83
Electromagnetic Q (Qes)0.38
Total Q (Qts)0.34
Compliance Equivalent Volume (Vas)0.29ft³
Mechanical Compliance of Suspension (Cms)0.291mm/N
BL Product (BL)9.77T·m
Diaphragm Mass Inc. Airload (Mms)12.1g
Maximum Linear Excursion (Xmax)5.4mm
Surface Area of Cone (Sd)143cm²

Materials of Construction

Cone MaterialTreated Paper
Surround MaterialCloth
Voice Coil Wire MaterialCCA
Voice Coil FormerKapton® / Polyimide
Basket / Frame MaterialCast Aluminum
Magnet MaterialFerrite

Mounting Information

Overall Outside Diameter6.48"
Baffle Cutout Diameter5.59"
Depth3.64"
# Mounting Holes4

Parts Express Staff Recommended Enclosure Volume

Sealed Volume0.2ft³
Sealed F3211.6Hz
Vented Volume0.4ft³
Vented F379Hz

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