Everything you need to know about Subwoofer Ohms: Series vs. Parallel
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Is doubling speakers +3dB or +6dB? What's parallel and series wiring?
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Wiring Your DVC 4 Ohm Subwoofer - 2 Ohm Parallel vs 8 Ohm Series Wiring
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4 Mistakes that Kill Bass - Car Audio Subwoofer Improvements!
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What Happens When You Wire Speakers Backwards?
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What You NEED To Know About Speaker Impedance! | Series vs Parallel, Ohms, & Amplifier Matching
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4x12 Series Parallel Wiring Tutorial
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How To Wire DVC 4 Ohm Subwoofer
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