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    System sounds totally different with different devices?

    So let's see here, I've got a PSI platform 3 in a 8.75 cu ft box tuned at 32Hz on a Zues 3200.1 with 0G. Currently on stock mids and tweeters in a 08 Tundra, (haven't got my pro audio PRVs in yet). I have a JVC KD-S27 head unit. Stock electrical (for now). The box is sitting in the rear seat. I...