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MTX Thunder 421D Car Audio Amplifier Manuals & Guides
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Tips & How To Guides for the MTX Thunder 421D Car Audio Amplifier
Amplifier going into protect mode????
Looking at alot of the unsolved FixYa problems - I can see alot of "My amplifier is going into protect mode - How do I fix it?" There is no...
written by blueextc3221
How to install a car Amplifier
Step by step manual on what you need and how to install your car amplifier. http://www.ehow.com/how_3680_install-car-amplifier.html
written by DrElectrics
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Specifications for MTX Thunder 421D Car Audio Amplifier
Key Features
Power Output
Performance
Dimensions
Other Features
MTX Contact Information
Main support number800-225-5689
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