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What are the frequency settings for a subwoofer? I have a subwoofer with 4 different frequency settings. I need powerful, punchy bass. Should the setting be positive or negative? - Quora
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Amazon.com: 1200W Bass Subwoofer Speaker 410Hz Frequency Divider Home Theater HiFi Stereo Car Crossover Loudspeaker Filter : Electronics
DSP 101: The Importance of Crossover Adjustments
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Setting crossovers in an AVR/pre-pro with Dirac Live room correction