Even if a speaker was blown it should still make some noises...
So you tested the speaker wires in the trunk and got "nothing"... As in you tested the amp output with a voltmeter or another speaker?
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Mobridge DA2 > JBL MS-8 > ARC XDi 600/4 > JBL Gti 408 Mids & Vifa OT19 Tweeters; PG Ti2 1600.5 > Morel HCW-10 & IDMax 15
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