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
Aerospace Cone Material: The Alpine Type-X woofer uses new advanced aerospace
materials for the cone, known as Kevlar-Rohacell which provides outstanding
strength at a lighter weight. These lighter materials minimize moving mass for
greater output efficiency.
Santoprene Surround: The woofer
features a High Amplitude Multi Roll Surround made of injection molded Santoprene,
that allows for an incredible amount of linear excursion and greater SPL.
HAMR Engineering:
The Alpine Type-X sub is built with HAMR
engineering, Alpine's exclusive subwoofer solution for cooler operation, longer
life and tight accurate bass.
Dual 4-ohm Voice Coils: The
Alpine Type-X woofer features dual 6-layer voice coils which utilize 220°C high-temperature
wire with Inner/Outer Winding on a Twin-Wall aluminum former. Dual voice
coil woofers offer flexibility in wiring. When the voice coils are wired in
parallel with each other, the woofer presents a 2 ohm mono load. When the voice
coils are wired in series with each other, the woofer presents an 8 ohm mono
load. In addition, each coil may be connected to a different amplifier channel
and each channel will see a 4 ohm load.
Terminal Block: The speaker
terminals are all located on one side in a machined gold-plated terminal block
with 2.5mm Allen-head set screws (an Allen wrench is included). There are slots
provided for the supplied voice coil jumpers.
Jumpers: The woofer is equipped
with two gold-plated voice coil connection jumpers. These jumpers allow you to
wire the voice coils in parallel (for a 2-ohm load) or series (for an 8-ohm
load).
Mirrored Progressive Nomex Spiders:
This subwoofer has twin mirrored progressive Nomex spiders for added
stability and mechanical durability. The custom progressive rolls gives the
woofer a longer, more linear stroke (over 23mm one way) with maximum centering
and restoring force. Special edge control design and Nomex construction provide
excellent tear resistance, strength and long-term reliability. The woofer has
reinforced layer tinsel speaker leads that are woven into the spiders for the
one-sided terminal layout.
Multi-Stage Ventilation System:
The Alpine Type-X woofer has a multi-stage ventilation system with the following
features:
- Cone/Voice Coil Junction
Venting: The unique parabolic cone and voice coil attachment piece help
to pull cool air into the motor structure.
- Spider Plateau/Leg Vent
System: Two vertical slits are cut into each of the four "legs" of the
basket below the spider to allow cool air to flow in and heated air to flow
out.
- Dual Flare Pole: Optimizes
airflow into the motor structure across the billet copper shorting sleeves
and thermal coupling heat dissipation plate to increase cooling.
Magnet: The woofer is equipped
with triple-stacked strontium magnets with an overall magnet weight of 130
ounces.
Cast Aluminum Exo-Frame: The Type-X
woofer utilizes a custom, one-piece, cast aluminum Exo-Frame with perimeter
venting. The unique design
provides the ultimate in voice coil cooling, creating a one-way airflow, keeping
hot air from coming into contact with the voice coil. The frame also features an
integrated spider landing and heat transfer plate.
Rubber Concealing Ring:
The woofer includes a rubber concealing ring to cover the screw holes when top mounting
the woofer. The top-mounted concealing ring increases the woofer's top mounting
measurement to 1.3125".
Specifications
Recommended Sealed Box Volume:
The sealed box sizes recommended by Alpine range from 0.65 cu/ft to 1.25 cu/ft.
with an ideal volume of 1.0 cu/ft.
Recommended Vented Box Volume:
The vented box sizes recommended by Alpine range from 1.0 cu/ft to 2.0 cu/ft.
with an ideal volume of 1.8 cu/ft. A slot vent, with the dimensions of 12" x 1"
x 24", is recommended.
