Controls and Inputs
Class D Amplifier: The enclosure contains a built-in 200-watt
Class D (digital) amplifier that allows RCA or speaker-level input. The amplifier
is highly efficient and designed specifically for use with the subwoofers in the
Built-in Low-pass Filter: The low-pass filter frequency can
be varied from 50 to 150 Hz for a seamless transition between the output of this
unit and that of the other speakers in the vehicle.
Auto Turn-On Feature for Speaker Level Input: When the using
a speaker level input signal (with the included speaker level to RCA adapter), the
subwoofer's built-in amplifier will automatically turn on and off with the radio.
Note: The auto turn-on feature does not
operate when a preamp level signal is used; the remote turn-on
lead is necessary.
External Bass Control: The external bass control allows you
to adjust the bass level from anywhere in the vehicle.
Thunder4500 Woofers: The enclosure comes loaded with two
12" Thunder4500 dual voice coil woofers.
Note: The woofers have an
unusual impedance, specifically designed with
the amp, and cannot be replaced with standard
Carbon-filled Polypropylene Cones: Each woofer cone is made
of carbon-filled polypropylene. Carbon adds strength and heat resistance to
polypropylene; the result is reduced distortion and improved reliability. In
addition, the cone is also very resistant to environmental extremes. Each woofer
uses a polyether foam surround.
Asymmetrical Linear Drive System (ALDS): The Asymmetrical
Linear Drive System consists of a flat, progressive spider that improves suspension
and an extended vented pole piece that smoothes out the cone's linear motion. The
result is high output and low distortion.
Spider Plateau Venting: Heat from the voice coil is vented
through metal-mesh covered vents that surround the back of the spider.
Voice Coils: The voice coils are wound on high-temperature
formers to promote high power handling.
Strontium Ferrite Magnets: The strontium ferrite magnets
yield highly efficient speakers.
Molded Enclosure: The molded, high-density polyethylene
resin enclosure resists flexing and dampens resonance.
Controls and Inputs
- Gain Control: rotary control
that allows you to set the gain of the amplifier
- Crossover Control: rotary
control that allows you to adjust the crossover
from 50 to 150 Hz
- Input: left and right RCA
jacks; these jacks allow speaker-level input
when the supplied RCA high-level input wires
- EBC: mini-jack for use
with supplied external bass control
- Harness: 3-pin jack for
use with supplied wiring harness
- Fuse: installed 20A ATC
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 verify what’s in the box, 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.