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.
Cone Cosmetics and Materials:
The woofer cone is made of a black laminated paper composite with a black poly
dust cap. "MTX AUDIO" is embossed in gray and red on the poly
Strontium Ferrite Magnet: This
woofer is made with a 30 oz. Strontium Ferrite magnet to yield a highly
Black Foam Surround: The
woofer's surround is made with durable black foam.
High-End Gasket Design: The
gasket attached to the top of the woofer frame is MTX's new injection-molded
polystyrene gasket. The hard polystyrene gasket is resistant to U.V. rays and it
Asymmetrical Linear Drive
System: This system uses a flat progressive spider and an extended,
vented pole piece to improve linearity and permit high output with low
Flat Progressive Spider: A flat
progressive spider helps reduce distortion by precisely controlling cone
Extended Vented Pole Piece: The
extended vented pole piece provides a more symmetrical magnetic field. The vent
helps air circulate around the voice coil to keep the coil cool; this increases
power handling and reduces distortion.
Enclosure Compatibility: This
woofer can provide extended bass in sealed, vented and bandpass enclosures (see
below for more information on enclosures).
Recommended Sealed Box
Volume: The sealed box sizes recommended by MTX range from 1.0 cu/ft to
2.0 cu/ft. The sealed enclosure MTX highlights on their spec sheet is a
1.25 cu/ft enclosure, so this is the enclosure recommended by Crutchfield.
Vented Box Volume: The
vented box sizes recommended by MTX range from 2.0 cu/ft to 3.0 cu/ft. The
vented enclosure MTX highlights on the woofer specification sheet is a 2.0 cu/ft
enclosure, so this is the enclosure recommended by Crutchfield. A 4"
diameter x 11.5" long port should be used with a 2.0 cu/ft enclosure; a 2.0
cu/ft enclosure with a 4"x 11.5" port has a tuning frequency of 36 Hz.
Single Reflex Bandpass Volume:
The bandpass box sizes recommended by MTX range from 2.0 cu/ft to 3.68 cu/ft. MTX highlights two bandpass enclosures on the woofer specification
sheet. One highlighted enclosure has an "S" value of 0.5, and
the other highlighted enclosure has an "S" value of 0.6. The
highlighted bandpass enclosure with an "S" value of 0.5 is a 2.28 cu/ft enclosure, with a sealed chamber volume of
0.85 cu/ft, a vented chamber
volume of 1.27 cu/ft and two 4" diameter x 6.25" long ports. The
enclosure with an "S" value of 0.7 is a 2.99 cu/ft enclosure, with a
sealed chamber volume of 1.03 cu/ft, a vented chamber volume of 1.82 cu/ft and
two 4" diameter x 4.25" long ports.
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.