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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: Re: DC at output: Why is it bad, and how to check? posted by dave slagle on April 5, 2002 at 20:07:00:
Not from the standpoint of the cone suspension system (the surround and voice coil spider). In the absence of any signal these tend to self center in the mid point of the speaker excursion. It is the extremes of the suspension that generally causes non-linearities (distortion) to occur in the audible outputIn addition to the excursion offset effect, DC offset also produces unnecessary heat generation in the voice coil. If your amp has say 2 volts of offset into your 8 ohm speaker you are sitting there dissipating an unnecessary 1/2W in the voice coil.
DC offset to speakers is to be avoided as a general rule...
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Follow Ups
- Re: DC at output: Why is it bad, and how to check? - Gepetto 20:46:51 04/05/02 (1)
- Re: DC at output: Why is it bad, and how to check? - Steve Eddy 21:55:59 04/05/02 (0)
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