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 subwoofer 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.
High/Low-Level Input: The unit offers one pair of RCA inputs
that can be used with a High Level (speaker-level) or Low Level (preamp-level)
input signal. A pair of High Level input wires (tinned bare wire-to-RCA plug) is
Auto Turn-On Feature: When the Thunderform is connected using
a speaker-level input signal, the amplifier will automatically detect the signal
and turn on and off with the radio. The auto turn-on feature does not operate when
a preamp level input signal is used, therefore the remote turn-on lead should be
External Bass Control: The external bass control allows you
to adjust the bass level from anywhere in the vehicle.
Terminator Woofer: This enclosure comes loaded with one 12"
Note: The woofer has an unusual
impedance, specifically designed with the amp, and
cannot be replaced with a standard MTX model.
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
- Input: left and right RCA
jacks; these jacks allow speaker-level input when
the supplied RCA high-level input wires are
- 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.