With your ear close to the speaker gently push on it. If it sounds scratchy then replace the speaker or consult an authorized dealer. Carefully touch the amp for temperature. If it is extremely hot then the amp is in thermal protection and needs to cool down. If thermal protection continues to be a problem, see an authorized dealer or call the technical support number below. 4. No sound from one side: Check the speaker connections, input connections, balance control on the source unit, and then

on your purchase of a new Class D monoblock MTX Audio amplifi er! MTX is one of the inventors of mobile audio, having designed the fi rst-ever in-vehicle enclosed subwoofer system in the early 80s. Our award-winning heritage speaks for itself, 14 Innovations Design and Engineering Awards, more than 80 AutoSound Grand Prix Product of the Year Awards, and more than 500 World Records or 1st Place Finishes in Sound Competitions. Also, MTX is the fi rst USA audio company to be awarded ISO9001 quality

3. Adjusting the Low, 24dB @ 40Hz-200Hz Variable Low Pass X-over Frequency Controls– • Setting for Subwoofers: Using “X-OVER” you have control over what frequency you want your amp to start crossing over your signal. By turning this control all the way counter-clockwise, you are crossing the signal over at 40Hz (the range is counter-clockwise 40Hz to clockwise 200Hz). This means that the amp will send the woofers frequencies from 20Hz to 40Hz and then start to taper down as the frequencies get o

30Hz-80Hz, Q 0.5-4.0 ARC: Cut 0-15dB, Freq. 200Hz Remote Subwoofer Level Control Defeatable feature Bypass Features 1. Prizm EFX – All MTX amplifiers include backlit adjustment controls on the top surface of the product. • Color – The backlit controls offer unlimited colors on the display -- from RED, GREEN, and BLUE to any color in between. • EFX – You can switch Prizm EFX lighting to “pulsate” with the beat of the music. 2. Xtant Technology Cooling (XTC) – A thermal-regulated turbo-charged int

This means that the amp will send the components or separates frequencies from 40Hz to 20kHz and then start to taper down as the frequencies get under 40Hz (octave roll off). The industry standard for high pass setting or X-over point is around 120Hz. When the amp is in HP setting and the X-over point is set to 120Hz, the amp is sending the speakers frequencies from 120Hz to 20kHz. This crossover network allows the drivers to recreate the frequencies within a precisely designed range so that the

Be sure to lay the signal wire away from all power cables and vehicle computers. Use high quality twisted pair interconnect cables to decrease the possibility of radiated noise entering the system. • Using RCA Connections: If the source unit has RCA outputs, simply attach a signal cable from the source unit to the amp’s RCA input. This will provide signal to the amp. • Using Speaker Level Connections: If the source unit does not have RCA outputs, a high level signal can be used instead by takin

6. Variable Hi, 12dB / Low, 24dB Mono @40Hz–350Hz X-over – This control allows the user to choose the exact low pass or high pass frequency range the amplifier will play for the best possible performance. A high pass or full range output may be selected for the front output. A high pass, low pass, or full range output may be selected for the rear output. The upper end of the low pass crossover range can be selected from 40Hz–350Hz at 24dB per octave with a mono output. The lower end of the high

Any deviation from the recommended connection procedures may cause serious damage to the amplifier, speakers, and/or vehicle electrical system. Please double check the connections before turning the system on. Installation Mounting Place your Thunder amplifier at the predetermined mounting location. Use a felt pen to mark the exact position of the mounting holes on the mounting surface. Set the amplifier aside. With a sharp, precise blade cut small circles in the carpet and padding around the fo

If the specification is not available, please follow the instructions listed below. X1 POSITION: 100mV–1V (Typically for RCA Input) • Setting for Factory (OEM) Source Units: To check the amount of voltage that is present from the source unit, take a multi meter, or a volt/ohm meter, on the A/C setting, (range from 100mV up to 10 volts) attach the positive and negative leads directly to any exposed speaker. It will not matter if the polarity is correct, it will read the same amount of voltage. X

Adding MTX amplifiers and matching MTX speakers and subwoofers with StreetWires connections will put you in a better position to hear, feel, and experience all of the music the artist intended. Specifications Primary Ratings: Power Output: 250 watts RMS x 1-channel at 4 ohm and . 1% THD+N Signal-to-Noise Ratio (1 watt): 71dB Secondary Ratings Power Output: 500 watts RMS x 1-channel at 2 ohm and . 1% THD+N THD+Noise (Distortion) (1 watt): . .5% Frequency Response (-3dB): 20Hz-200Hz Maximum Input