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mp 300 d4.3
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  1. System Design: Help Me Choose Equipment For My Car
    Hi guys I have recently purchased a new hertz MP 300 dual voice coil 4+4 . I had an older version and it died was over 6 years old. It was installed an entry level sealed box at around 28 litres. We fitted the sub to that old box and it sounds ok at low to mid-levels but when you turn it up it...
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