Shopping cart


In stock


  • 6.5″ Midrange – 4 Ohm
  • High Performance Bullet
  • 95 dB – 400 Watts


In stock


SKU: 6MR400-4 BULLET Categories: , Tags: ,



The MR BULLET was conceived with one goal in mind: High-Performance!

Featuring an Aluminum Phase Plug (Bullet), this mid is built like a professional midrange loudspeaker, but it has been designed for use in the mobile audio market, as we called it Pro Audio On Wheels®!! By combining elements from PRO Audio and Car Audio, we have developed a NEW type of high efficient midrange that is able to give high levels of output for your custom door.



  • Built to Perform at Wide Frequency Range: 145 – 12,500 Hz
  • Highest Quality Speaker with bullet design available
  • High efficiency: 95 dB guarantees High Output Levels
  • Handles 400 Watts – Endurance at Loudest Volumes
  • Vented Air pole piece for heat dissipation
  • Center phase plug for even sound distribution
  • 4 Ohm Impedance
  • Also available in 8″ – 8MR500-4 BULLET
    and 6×9″ – 69MR500-4 BULLET

The “bullet” phase plug is made from pure aluminum acting as a radiator cooling system for the voice coil and machined to perfection for even sound dissipation. Beyond good looks, this cone is extremely light, providing excellent damping to keep an incredibly natural yet accurate sound.

A triple roll cloth surround, combined with an optimized fiber pressed paper cone, ensure the speaker’s frequency response is smooth and extends to high range making an easy transition to a super tweeter, but according to customers, the high-frequency response from this speaker does NOT need support from a tweeter!

6MR250B-4 SLIM

The suspension design of this mid range features a single layer spider – which connects to the coil former with premium stitched lead wires, all being driven by a copper-clad aluminum wire voice coil providing high efficiency and excellent power handling.

Its high-performance characteristics and high-quality components provide exceptional clarity, detail, and dynamics sound. You can expect outstanding sound stage quality and realistic sound reproduction for a great value. This is the new standard of value in high-performance bullet speakers.

Built to perform and able to handle 400 Watts of Continuous Program Power (RMS), this midrange is the perfect match on 3-way custom door system such as:

10W1000-NDY-4 + 6MR400-4 BULLET + TW450Ti-ND-4 making the ultimate sound reproduction machine, with unbeatable sound quality and output.

Technical Details


Nominal Diameter 6.5″ (152 mm)
Nominal impedance 4 Ohm
Nominal Power Handling* 200 Watts
Continuous Program Power (RMS)** 400 Watts
Max Peak Power*** 800 Watts
Sensitivity 2.83V at 1m 95 dB
Recommended Hi Pass Crossover For Full Power Handling 145 Hz 12db Per Octave Crossover
Frequency Response 145 – 12,500 Hz
Voice Coil Diameter 1.5″ (38 mm)
Voice Coil Wire CCAW
Voice Coil Winding Depth 9.5 mm
Former Material Kapton
Magnetic Gap Depth 6.0 mm
Frame Material Stamped Steel
6MR400-4 BULLET 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 4.40 l
Excursion (mathematical)*** Xmax 3.25 mm
Free Air Resonance Fs 144.1 Hz
Mechanical Factor Qms 11.98
Electrical Factor Qes 0.64
Total Factor Qts 0.60
Cone Area Sd 143 cm²
Mechanical Mass Mms 7.94 g
Bl Factor Bl 6.37 Tm
Dc Resistance Re 3.6 Ohm
Inductance Le 0.136 mH at 1 kHz
Mechanical Mass Without Air Mmd 6.97 g
Mechanical Compliance Cms 0.154 mm/N

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

6MR400-4 BULLET Impedance


Overall Diameter 6.59” (167.5 mm)
Front Mount Baffle Cutout 5.65” (143.5 mm)
Mounting Depth 2.62”(66.5 mm)
Overall Depth 2.99”(73.5 mm)
Net Weight 4.81 Lbs (2.18 kg)
Shipping Weight 5.18 Lbs (2.35 kg)
Carton Dimensions W x L x H 8.50”x 8.50” x 3.35” (175 x 175 x 85 mm)
6MR400-4 BULLET Loudspeaker
WARNING: Cancer and Reproductive Harm – our Return Policy.

Customer Reviews

Based on 46 reviews

I bought 4 of these bad boys and using a DS18 4 channel amp that puts out 300 watts a channel, these speakers are ridiculously loud and clear. I planned on upgrading my tweeters in the future, but using these I might not have to!

Joe Rodriguez

Perfect fit for my WRX 2012 and SO MUCH better sound, love this brand since I was 14 and start working on cars

Justin Bell

I really liked them good sound may get more in the future

Sean Straber
6MR400-4 BULLET...Wow

Previously bought 6.5 adapter for my 2009 Harley-davidson Electra Glide Classic and was told to check out PRV. I purchased a set of the 6MR400-4 BULLET...installed them (no amp yet)...then I turned it on and up. The clarity with these speakers at max volume with no amp is amazing. Even has great sound with full face helmet...visor down...running 85 down the road. Don't know if the video will do them justice. I will be purchasing an amp and possibly some tweeters shortly. I highly recommend these speakers.


Excellent sound and super loud, I own a total of 14 of these from y’all and love them

You may also like…


Get your free gift!

PRV Lanyard
Orders above $50 get a
Free PRV Lanyard
PRV Banner
Orders above $500 get a
Free PRV Classic Banner
PRV Banner
Orders above $1000 get a
Free PRV Team Backpack