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Crutchfield

MTX Blue Thunder BL104

Legend Series 10" 4-ohm Component Subwoofer

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  • MTX Blue Thunder BL104

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Item #: 236BL104
 
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Our take on the MTX Blue Thunder BL104

MTX

What's a component sub and why would I want one?

A component sub is simply a speaker that's designed to reproduce bass once it's installed in a compatible enclosure. Think about the impact of a movie soundtrack in a big theater or even in your own home HDTV setup. A component sub can add the same kind of power to the music in your car. And a car sub is not all about the boom that you hear on a street corner (although that's cool too) - you can pair a component sub with your choice of enclosure to get bass just the way you like it, from tight and punchy to fat and loose. And once you experience music in your car with a well-tuned subwoofer, you'll never go back.

The MTX Blue Thunder Legend BL104 10" subwoofer hits hard and clean, thanks to a tough poly woofer cone and one-piece EPDM rubber gasket/surround. A four-layer voice coil and oversized magnet structure contribute to the power handling capability of this great-looking speaker.

MTX's asymmetrical linear drive technology combines a flat, progressive spider with an extended, vented pole piece to minimize distortion while keeping power handling at high levels. Pull it all together and you're in a hard-rockin' neighborhood! 2-year warranty.

Details:
  • frequency response 37-150 Hz
  • power range 75-250 watts RMS
  • peak power handling 500 watts
  • sensitivity 85 dB
  • top-mount depth 5-1/16"
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Hands-on research from the Crutchfield Labs (what are the Labs?)

Features and Specs
Size
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10 -inch
Impedance
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4 ohms
Cone Material
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Polypropylene
Surround Material
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EPDM rubber
Ideal Sealed Box Volume (cubic feet)
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0.75
Ideal Ported Box Volume (cubic feet)
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1.5
Port diameter (inches)
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3
Port length (inches)
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10.75
Free-Air
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No
Dual Voice Coil
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No
Sensitivity
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85 dB at 1 watt
Frequency Response
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37 - 150 Hz
RMS Power Range (Watts)
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75-250
Peak Power Handling (Watts)
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500
Top Mount Depth (inches)
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5 1/16
Bottom Mount Depth (inches)
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5 9/16
Cutout Diameter or Length (inches)
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9 1/4
Vas (liters)
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23.7
Fs (Hz)
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37.6
Qts
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0.67
Xmax (millimeters)
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9.44
Parts Warranty
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2 YEARS
Labor Warranty
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2 YEARS
Product Research
What's in the box?

Download owner's manual

  • One 10" woofer
  • Technical Data Report
  • Warranty card
  • "MTX Audio" sticker

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team — they open the box, verify contents, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Features
Specifications

Features

Woofer: The inverted dustcap is integrated seamlessly with the tinted gray polypropylene cone, for a sleek, high-tech appearance.

EPDM Rubber Surround: The woofer is made with a one-piece EPDM rubber surround and gasket combination.  When bottom-mounting the woofer, the one-piece surround and gasket make an air-tight seal, to prevent any loss of performance due to air leaks around the woofer.  When the woofer is top-mounted, the one-piece surround and gasket combination enhances the overall cosmetic appearance of the woofer. EPDM has the added benefit of being resistant to UV rays for extreme durability. 

Oversized Magnet Structure: This woofer has an oversized magnet structure, made with a 33 oz. Strontium Ferrite magnet.

Four-layer Voice Coil: A 2" four-layer voice coil is used for higher power handling.

Asymmetrical Linear Drive: This system improves linearity and permits high output with low distortion.

Extended Vented Pole Piece: The extended vented pole piece provides a more symmetrical magnetic field.

Enclosure Compatibility: This woofer can provide extended bass in sealed, vented and bandpass enclosures (please see "Specifications" section for more information on enclosures).

Specifications

Recommended Sealed Box Volume: The sealed box sizes recommended by MTX range from 0.5 cu/ft to 1.0 cu/ft.  The sealed enclosure MTX highlights on their spec sheet is a 0.75 cu/ft enclosure, so this is the enclosure recommended by Crutchfield.

Vented Box Volume: The vented box sizes recommended by MTX range from 1.0 cu/ft to 2.0 cu/ft.  The vented enclosure MTX highlights on the woofer specification sheet is a 1.5 cu/ft enclosure, so this is the enclosure recommended by Crutchfield.  One 3" diameter x 10.75" long port should be used with a 1.5 cu/ft enclosure; a 1.5 cu/ft enclosure with a 3"x 10.75" port has a tuning frequency of 33 Hz.

Single Reflex Bandpass Volume: The bandpass box sizes recommended by MTX with an "S" value of 0.6 range from 0.91 cu/ft to 1.33 cu/ft. The bandpass box sizes recommended by MTX with an "S" value of 0.7 range from 1.14 cu/ft to 1.77 cu/ft.  The bandpass enclosure MTX highlights on the woofer specification sheet is a 1.0 cu/ft enclosure with an "S" value of 0.6, so this is the enclosure recommended by Crutchfield. The highlighted bandpass enclosure has a sealed chamber volume of 0.39 cu/ft, a vented chamber volume of 0.53 cu/ft and a 3" diameter x 5.75" long port. 

Note: The bandpass enclosure with the higher "S" value produces a more narrow bandwidth with better transient response; the enclosure with the lower "S" value produces a wider bandwidth at the expense of transient response.

 
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