I have an mtx thunder 81000 d the inline fuse keeps popping

When installing an amplifier of this size and current draw - the fuse is NOT ON THE AMPLIFIER.

This particular amplifier has a built in thermal shutdown protection only.

If the INLINE fuse is failing... only 2 things that would cause it....

1. Fuse rating too low - The current draw + wire resistance is greater than the fuse allows.

2. There is an immediate ground situation. There may be a screw though the power wire - the wire may be worn where it enters the firewall - or there may be a strand or 2 of wire jumpering from the Power terminal of the amplifier to the chassis (of the amplifier)

The recommended external fuse rating is 150A for this amplifier. Please be sure you are using the proper fuse for the amount of current draw this amplifier requires.

If there is an additional amplifier drawing from this feed - add the fuse rating of that amplifier to the INLINE fuse.

ALSO - be sure your wiring is of the proper gauge. I/0 wire is necessary in this instance - (or 2 runs of 4GA) as it has less resistance to the current. Utilizing an insufficient power wire will also lead to the INLINE fuse blowing.

If you have additional questions or concerns - feel free to ask.

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I have seen more reason then meets the eye for the cause of this issue.

1. bad mosfet
2. bad electrolytic capacitors
3. overload
4. Bad amp

First what are you doing when the fuse pop's?

If it pops right when its powered check the above 4 keynotes I bet I am not to far off your issue.

The facts are it could be any of the 4 the unit will need to be opened up to see what is the cause. Also make sure you check the RMS verses Dynamic power attributes and not put too much load on the amp. also there are heat requirements are you using the correct safety measures to reduce heat and load.

All else fails check it into a stereo tech in your local I bet there will be a solution.

Thanks for your feedback and your votes today!

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