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cable from battery to fuse holder(within 6 inches) to yellow coming out of the back of the hu.
with the earth i used a bolt that was under the top of the dash as i had to take it of to get th hu in
well just for you (from one spark to another)
2x450wRMS= 900wRMS
I=P/v I= 900/14 I=64.28A /0.6(for effiency) = 107A
now would you want to sit in a car with something pulling 107A down some 10mm2?
yeah that was an industrial power supply and looked about the size of a small filing cabinet.
i've built a 6A power supply before but 130A is another thing
best way to do it is tape a 1m long piece of thin wire to a long thin terminal drive
then tape the thin wire to the larger wire an pull through
when taping the wires together remember surface area is the key for them not to come apart