Input Panel Layout

POWER AMPLIFIER OWNER’S MANUAL

1.RCA Input Jacks – These RCA input jacks are for use with source units that have RCA or Line Level Outputs. An independent set of jacks are provided on the Thunder404 for front and rear stereo inputs. A source unit with a minimum level of 200mV is required for proper operation. The use of high quality twisted pair cables is recommended to decrease the possibility of radiated noise entering the system.

2.Input Select 2CH/4CH – This switch, found on the Thunder404, is used to match the amplifier’s input to the source unit’s output so all four channels of the amplifier are driven. If your source unit has 2 outputs (left and right) connect them to the amplifier’s front channel inputs, and place the input select switch in the 2CH position. If your source unit has 4 outputs, (left front, left rear, right front, right rear) connect them to the ampli- fier inputs and place the input select switch in the 4CH position. In the 4CH position, the fader on your source unit will operate.

3.Speaker Level Inputs – This input will allow the amplifier to operate from source units with speaker- level outputs. Output speaker leads from the source unit should be tied directly to the wire harness provided with the amplifier.

Wire harness color codes:
Grey/Black = Source units right negative (-)	White/Black = Source units left negative (-)
Solid Grey = Source units right positive (+)	Solid White = Source units left positive (+)

With the Smart-Engage™ auto-turn circuit, a remote turn-on wire is not necessary when connecting the speaker-level input wire harness to a high powered source unit. The amplifier will automati- cally turn on when music is received.

4.RCA Output – These RCA outputs allow for a signal to be sent to other amplifiers in a daisy-chain con- figuration. The RCA outputs on all Thunder amplifiers will send a full-range signal to additional amplifiers.

5.Gain Controls – These controls are used to match the input sensitivity of the amplifier to the particular source unit that you are using. The controls are factory set to 1Vrms. Note that the Thunder404 has a sepa- rate gain control for front and rear channels.

6.Crossover Select – This switch controls the type of crossover configuration that you desire. Thunder 2-channel amplifiers include a defeatable 18dB/Octave 85Hz crossover that is high pass/low pass or full range selectable. The Thunder404 4-channel amplifier includes a defeatable 18dB/octave 85Hz crossover that is high pass or full range for the front channels, and high pass, low pass or full range for the rear channels.

❸ ❺ ❶ ❹ ❻

❸

❺❶ ❹ ❻

❺❻ ❷ ❸ ❶ ❹ ❶ ❸❻ ❺

Thunder404, Thunder202, Thunder282 specifications

MTX Audio has long been a recognized name in the world of audio equipment, and their Thunder series subwoofers, specifically the Thunder282, Thunder202, and Thunder404, showcase the brand's commitment to delivering high-quality sound performance, durability, and cutting-edge technology.

The Thunder282 is designed for audiophiles seeking powerful bass and impressive sound clarity. Its dual voice coil design allows for flexible wiring options, enabling users to optimize the subwoofer's performance according to their preferences. This model features a robust and lightweight cone construction, which not only enhances sound reproduction but also contributes to the overall efficiency of the subwoofer. With a peak power handling capability of 2800 watts, the Thunder282 guarantees an impactful audio experience that adds depth to any music genre or movie soundtracks.

Moving on to the Thunder202, this model is an excellent choice for those looking to achieve solid bass without compromising on available space. Despite its compact design, the Thunder202 packs a punch with a peak power of up to 1200 watts. The subwoofer is equipped with a surround that helps in minimizing distortion, resulting in a cleaner sound output. Its integrated cooling system is another notable feature, preventing overheating during extended use, thus ensuring lasting performance.

Finally, the Thunder404 stands out with its innovative technologies tailored for bass enthusiasts. Sporting a peak power of 4000 watts, this model is engineered to deliver mind-blowing low frequencies that can transform a standard audio system into a high-impact sound experience. The Thunder404 incorporates a unique venting design to improve airflow around the coil, which helps in enhancing thermal performance. Additionally, the subwoofer employs advanced materials for its cone and surround, optimizing the overall durability and longevity, even under demanding conditions.

Overall, the MTX Audio Thunder series, comprising the Thunder282, Thunder202, and Thunder404, presents a comprehensive range of options for consumers. Each model showcases unique features and specifications that cater to different audio needs, ensuring that users find the perfect fit for their sound system. With advancements in technology, a focus on high performance, and a commitment to quality, MTX Audio continues to lead the way in the automotive and home audio markets. Whether for musical enjoyment or movie watching, the Thunder series delivers powerful and engaging sound that elevates the overall listening experience.

MTX Audio Thunder202, Thunder282 Input Panel Layout, Grey/Black = Source units right negative

Models: Thunder404 Thunder202 Thunder282

Wire harness color codes:

Grey/Black = Source units right negative (-)

Solid Grey = Source units right positive (+)