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Dear Customer, Thank you for choosing MD.Lab subwoofers. These subwoofers represent the latest advances in acoustic technology, and like all MD. Lab products are built and tested using the highest grade components and state of the art techniques. When installed properly, they will provide many years of accurate sound reproduction.
Control Descriptions Level This allows the adjustment of the amplifier level of the subwoofer. Turn clockwise to increase the level. If the sound becomes distorted reduce the level. Installation Make sure the Active Tube is firmly fixed in your vehicle. Check before drilling or cutting holes.
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