PhoenixGot a écrit :Perso j'ai vraiment vu une différence!!!
PhoenixGot a écrit :
Pour la qualité acoustique ou pour du IASCA, je suis d'accord, ça sert à rien!
donc tu fais du SPL
Many people will use a capacitor because their headlights flicker at night when their audio system is pounding. They figure that the capacitor will supply these high current demands directly to their amplifiers. Hence the amplifiers won’t stress the rest of the electrical system, including the headlights. And guess what? When they add the capacitor, the headlight flickering is reduced substantially. So there you go—this is “proof” that the capacitor performed as advertized!
Since the capacitor’s positive and negative terminals are directly connected to the terminals of your amplifiers, it actually acts as a buffer for the headlights—not for the amplifiers!
There is an instant drop in voltage and current to the amplifiers when the capacitor is re-charging itself
Yes, the amplifiers will instantly use a minimal amount of current available from the discharging capacitor, but this is substantially outweighed by the negative side-effects in the whole circuit:
- The capacitor’s current is very limited in duration (time), magnitude (amperes) and thus in quantity (amp-hours). It is not enough to maintain durations of extreme audio fidelity demanded by the amplifiers.
- There is an instant drop in voltage and current to the amplifiers when the capacitor is re-charging itself.
- The amplifiers are directly connected to an unstable supply of incessantly fluctuating voltage and current—the capacitor!
- The capacitor is an added load on the alternator, thus stealing current away from your amplifiers and recharging itself.
- The capacitor severely limits current to the amplifiers while it is charging.
It takes milliseconds to discharge the capacitor, but much longer to charge it; especially as it ages in the extreme automotive environment.
- The capacitor acts like buffer for your accessories, not your amplifiers. It restricts the current being sourced to your amplifiers because there is a limited supply of it. You don’t have an AC home outlet in your car with high voltage and a virtually unlimited current supply.
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