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  • 8″ Midrange – 4 Ohm
  • High Performance Bullet
  • 95 dB – 500 Watts
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  • Monthly Special: $49.00

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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: 95 – 20,000 Hz
  • Highest Quality Speaker with bullet design available
  • High efficiency: 95 dB guarantees High Output Levels
  • Handles 500 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 6.5″- 6MR400-4 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 500 Watts of Continuous Program Power (RMS), this midrange is the perfect match on 3-way custom door system such as:

10W1000-NDY-4 + 8MR500-4 BULLET + TW500My-ND making the ultimate sound reproduction machine, with unbeatable sound quality and output.

Technical Details


Nominal Diameter 8″ (203 mm)
Nominal impedance 4 Ohm
Nominal Power Handling* 250 Watts
Continuous Program Power (RMS)** 500 Watts
Max Peak Power*** 1000 Watts
Sensitivity 2.83V at 1m 95 dB
Recommended Hi Pass Crossover For Full Power Handling 125 Hz 12db Per Octave Crossover
Frequency Response 95 – 20,000 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
8MR500-4 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 20.8 l
Excursion (mathematical)*** Xmax 3.25 mm
Free Air Resonance Fs 78.2 Hz
Mechanical Factor Qms 20.80
Electrical Factor Qes 0.48
Total Factor Qts 0.46
Cone Area Sd 241 cm²
Mechanical Mass Mms 11.5 g
Bl Factor Bl 6.45 Tm
Dc Resistance Re 3.5 Ohm
Inductance Le 0.132 mH at 1 kHz
Mechanical Mass Without Air Mmd 9.39 g
Mechanical Compliance Cms 0.360 mm/N

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

8MR500-4 BULLET Impedance


Overall Diameter 8.27” (210 mm)
Front Mount Baffle Cutout 7.32” (186 mm)
Mounting Depth 3.19”(81 mm)
Overall Depth 3.46”(88 mm)
Net Weight 5.18 Lbs (2.35 kg)
Shipping Weight 5.51 Lbs (2.50 kg)
Carton Dimensions W x L x H 8.86”x 8.86” x 4.13” (225 x 225 x 105 mm)
WARNING: Cancer and Reproductive Harm – our Return Policy.

Customer Reviews

Based on 37 reviews
Quality Design

i did not yet tested since i will install on my hyundai kona in the philippines, but my first impression are totally great the design the quality are good, shipped in safe condition, thanks will upload the video in my youtube channel.

Nathaniel DeCourcey
Super loud

I have 16 of these in my Cadillac Escalade on a Taramps 4000×4 and they are definitely super loud and clear.

Gavin Burton

Awesome speaker for the price very loud and clear and well built speaker!!

Jason Rodriguez
Good value and clear sound

Has great mids and high , really good for the price especially on sale .

Mark B.

Installed 4 in the doors in a CRV with 4 Timpano ST3 tweeters. Tuned on a Prv EX3.5 at 150 high and 8k low on a small Stetsom 800.4 amp. At only about 120 watts each they are loud and crystal clear with the right eq settings too! Very good mid bass and excellent vocals! Prv keeps impressing!

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