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If you use a good quality LOC and interconnects you shouldn't have any noise. If you have turn-on thump, then you can try to adjust the gain or use a resistor on the amp's remote wire and see if that helps. You can also run a return ground wire from the radio's ground supply to the ground on the amp to eliminate any ground potential differences.Yes.. i did the same thing - Make Sure To Use a REALLY good ground - and use a ground loop isolator.. even then you will still have some ground noise.. and when radio off... amp on.. you can tap a factory door speaker and the subs will go bump.. lol