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)