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  1. MB Quart Passive Crossover Question

    General Car Audio Discussion
    I just bought a pair of old school MB Quart QXD-216 passive crossovers. I was wondering if someone could please help me with the wiring. I understand the A, B, C, D is for tweeter attenuation and the Output (W+, W-, T+, T-) will go to the component speakers. What is up with the Input of...
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