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Message: <blockquote data-quote="Jepalan" data-source="post: 8156279" data-attributes="member: 655519">I don't see how ESR applies to this discussion of voltage drop at all. Capacitors are not installed in series with the power feed. They are installed in parallel across the power terminals.  In general, across the operating freq range of the cap, ESR will increase at lower frequencies and decrease at higher frequencies up to the self-resonant frequency of the cap.  Once charged the capacitor creates no DC load on the system, and very little additional dynamic load (compared to the amp and sub).I don't follow the argument that a cap causes voltage drop.  That said, I don't use caps in my sub installs, so I'm not an expert. Would love to hear a better explanation and see some measurements of actual voltage drop caused by cap installs.</blockquote>

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