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Features
Enclosure Compatibility
Features
NBR Surround:
The woofer is made with a one-piece NBR (Nitrile Butadiene 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. NBR has the added benefit of being resistant to
ozone and UV rays for extreme durability.
Mica-filled Polypropylene
Cone: The woofer cone is made of
Mica-filled poly with a bright aluminum finish and 8 stiffening ribs for
improved cone stiffness and higher mechanical power handling. Concentric
rings are molded into the cone and dust cap surfaces to give them a machined
appearance. The "MTX Audio" is embossed on the poly dust cap.
Oversized Magnet Structure:
This woofer has an oversized (37 oz.) magnet structure, with a 2" voice
coil.
Asymmetrical Linear
Drive: This system improves
linearity and permits high output with low distortion.
Spider Plateau Venting:
Heat from the voice coil is vented through metal-mesh covered vents that
surround the back of the spider.
Enclosure Compatibility:
This woofer can provide extended bass in sealed, vented and bandpass enclosures
(see below for more information on enclosures).
Enclosure
Compatibility
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.
Recommended 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 11" long port
should be used with a 1.5 cu/ft enclosure; a 1.5 cu/ft enclosure with a 3"x
11" port has a tuning frequency of 32 Hz.
Recommended Single
Reflex Bandpass Volume: The bandpass box sizes recommended by MTX range
from 0.98 cu/ft to 1.68 cu/ft. MTX highlights two bandpass enclosures on
the woofer specification sheet. One highlighted enclosure has an
"S" value of 0.6, and the other highlighted enclosure has an
"S" value of 0.7. The highlighted bandpass enclosure with an
"S" value of 0.6 is a 1.11 cu/ft enclosure, with a sealed chamber
volume of 0.37 cu/ft, a vented chamber volume of 0.62 cu/ft and a single 4"
diameter x 9.5" long port. The enclosure with an "S" value
of 0.7 is a 1.40 cu/ft enclosure, with a sealed chamber volume of 0.44 cu/ft, a
vented chamber volume of 0.84 cu/ft and a single 4" diameter x 7.75"
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.
