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Tech Square Technical and speculative discussion of amps, cables and other topics. |
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Tech Square Technical and speculative discussion of amps, cables and other topics. |
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In Reply to: Re: Simple network to protect tweeters? posted by beermanpete@socal.rr.com on November 29, 2006 at 19:15:55:
Mackie speakers use a "passive-active" circuit to clamp input voltage spikes. it consists of a bridge rectifier, a zener and a mosfet. the circuit is an open circuit across the speaker terminals until the zener conducts, and turns on the mosfet, clamping the speaker voltage to a little bit more than the zener voltage (speaker voltage+ bridge forward voltage+zener voltage+mosfet threshold voltage). the circuit contains no reactive components, so it's operation is very fast, and only causes distortion when it clamps the waveform peaks. since harmonics of most of the high frequency waveforms going to a tweeter are outside of the range of human hearing, the distortion during clamping is unnoticeable.
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- Re: Simple network to protect tweeters? - unclejed613 09:19:21 12/26/06 (0)
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