About the MTX TNP212D2 Bass Package

Add some bass to your ride
Add some bass to your ride
You want to take your bass to the next level, but you don't want to mess with matching up subs, a box, and an amp. This MTXTNP212D2 bass package includes a powerful mono amplifier and a pair of 12" subs loaded in a sealed box. Install this setup in your car to get the rumble your system's been missing.
A complete bass package, just add wiring
MTX starts off the package with a Terminator TNA251 mono amplifier that'll provide up to 250 watts RMS, a nice match for the two 12" Terminator subs that are also included. The subs come mounted in a rugged sealed enclosure made from 5/8" MDF that'll give you that low-frequency reinforcement you're looking for. And MTX protects this bass package with a 2-year warranty.
Product highlights:
- package includes one Terminator TNA251 mono amplifier and one dual 12" sealed enclosure loaded with two 12" Terminator subwoofers.
Terminator TNA251 mono amplifier:
- 150 watts RMS x 1 at 4 ohms (250 watts RMS x 1 at 2 ohms)
- variable high- and low-pass filters (40-400 Hz, 12 dB/octave)
- preamp-level inputs only
- fuse rating: 30A x 2
- 8-gauge power and ground leads recommended wiring and hardware not included with amplifier
- 11-3/4"W x 2-1/4"H x 7-3/16"D
- warranty: 2 years
Terminator sealed dual 12" enclosure:
- 5/8" MDF construction with aviation-grade carpet
- two Terminator 12" 4-ohm subwoofers wired for 2-ohm impedance
- polypropylene woofer cone with durable rubber surround
- frequency response: 41-150 Hz
- power range: 200-400 watts RMS total
- dimensions: 29-5/8"W x 14"H x 13-1/2"D1 x 11-1/8"D2
- warranty: 2 years
- MFR # TNP212D2
What's in the box:
MTX TNP212D2 Bass Package owner's manual
- TNE212D Dual subwoofer enclosure loaded with two 12" Terminator subwoofers
- TNA251 Mono amplifier
- 30A ATO fuse (internally installed)
- Remote bass control (attached 3M adhesive)
- 16'/4" Remote bass control cable (RJ-25 connectors)
- Four 3/4" Philips-head screws
- Two 12mm Philips-head screws
- 4mm Allen key
- 2mm Allen key
- Amplifier Owner's Manual
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More details on the MTX TNP212D2 Bass Package

Product Research
Features
Overview: This MTX package includes a Terminator TNA251 mono subwoofer amplifier and a hatchback style enclosure loaded with two 12" Terminator subwoofers.
Enclosure: The sealed enclosure is built from 5/8" MDF (Medium Density Fiberboard) and is covered in aviation grade carpet. Two 12" 4Ω subwoofers are installed and internally wired in parallel to present a 2Ω load at the single set of output terminals. Each spring-post terminal can accommodate speaker wire up to 8-gauge.
TNA251: The included TNA251 is a Class-D mono amplifier capable of powering the sub enclosure with up to 250 watts RMS @2Ω. Inputs and controls for the amplifier include the following:
- Power Input: Power and Ground ports consist of hex-socket set-screw terminals that can accept up to 4 AWG wire, along with a Remote turn-on terminal that can accept up to 8 AWG wire.
- Speaker Output: One set of hex-socket set-screw terminals is provided for the mono speaker output, which can accept up to 8 AWG wire.
- Fuse: A socket on the inside of the amp holds the included 30A ATO fuse. If the fuse needs to be replaced, the bottom panel of the amplifier must be removed.
- Low-Level Inputs: Two RCA jacks provide a low-level signal input.
- Controls:
- Gain: Adjusts the input signal level and can accept input signals 200mV to 10V.
- LPF: The amp includes a 12dB/oct low-pass filter with a cutoff frequency that can vary between 50Hz and 250Hz.
- Subsonic: A built-in subsonic filter can be used to filter unwanted low-frequencies, with an adjustment range of 10Hz to 55Hz.
- Bass Boost: A Bass Boost control lets you increase the bass level, centered at 45Hz, from 0 to +12dB.
- Remote Bass-Level Input: An RJ-25 socket is provided to plug in the included Remote Bass-Level Control.
Remote Bass Control: The TNP212D2 includes a remote bass control, letting you adjust the bass level without having to access the amplifier. The remote bass-level control can be mounted under a dash or console, within easy reach of the driver, and includes a 16'/4" connection cable terminated in RJ-25 connectors.
Specifications:
- Amplifier:
- Amp Class: Class-D
- Amp Power:
- 250 watts RMS x 1 @2Ω
- 150 watts RMS x 1 @4Ω
- Signal to Noise Ratio: 95dB
- THD+Noise (@1W): <0.3%
- Frequency Response: 20Hz - 250Hz
- Input Signal Range: 200mV - 10V
- Low-Pass Filter: Variable 50Hz -250Hz, 12dB/oct
- Subsonic Filter: Variable 10Hz - 55Hz, 12dB/oct
- Subwoofer:
- Size: 12" x 2
- RMS Power: 400 watts RMS (200 watts per sub)
- Enclosure: Width: 29.625", Height: 14.0", Depth: (top) 11.125" / (bottom) 13.750"
- Amplifier: Width: 7.021", Height: 1.884", Depth: 5.374"
- Remote Bass-Level Control: Width : 0.650", Height: 0.890", Depth: 2.0" (incl. cable)
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Just installed in my Ford Escape and I love it!! More than enough bass!! Have gotten a lot of compliments from my buddies! Would definitely recommend... Great product for great price
Iceman from Lorain, OH