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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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In Reply to: Capacitor comparisons posted by Steve on May 19, 2001 at 14:15:28:
Steve,I don't doubt your conclusions in your applications, however, allow me to point out that a cap that works well for low-power use may not always do so well for high-power use, and vice versa.
For low-level use, I concur that DA, impedance and high-frequency inductance are important. But for high-level use, mechanical stability and dampening can also be quite important. If you push enough power through a cap that is not wound very tightly, mechanically not so strong, and/or underdamped, the cap will ring enough for you to hear the music coming from it - acoustically. This means that electrical signal is being converted (and wasted) as mechanical energy.
On top of that, I consider capacitors for speakers to be a special case, because compared to electronics, most speakers are anything but neutral. For electronics, going with the component that most closely resembles a straight-wire bypass is fine. However, if you are doing a speaker crossover, and the speaker driver units don't have flat response within their passband, or have ringing or energy storage problems (which is usually the case), you may very end up with better results if you look for a cap that complements (or neutralizes, depending on what kind of sound you are looking for) the colorations of the speaker drivers.
hth,
jonathan carr
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- Re: Capacitor comparisons - jcarr 10:02:08 05/22/01 (0)
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