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Junior Varsity
Speaker protection
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<blockquote data-quote="Ivan Beaver" data-source="post: 148028" data-attributes="member: 30"><p>Re: Speaker protection</p><p></p><p></p><p>Here is the math. If your speakers are 1000 watt peak-then that means 250 watt continuous. So half power would be 125 watts.</p><p></p><p>Assuming they are 8 ohms, that would be 31.6V. Basic ohms law.</p><p></p><p>So now that we know what voltage you are looking for, you need to set up the limiter.</p><p></p><p>Put a sine wave tone into the system (in the middle of the loudspeaker freq range) and DISCONNECT the speakers. Turn it up until it is above 31V-lets say 40V.</p><p></p><p>Now simply turn down the limiter threshold until your meter (AC voltmeter on the amplifier output terminals) reads 31V.</p><p></p><p>This is a VERY BASIC setup-and there are a number of variables that can affect the "proper" setting. </p><p></p><p>But it is a good start.</p></blockquote><p></p>
[QUOTE="Ivan Beaver, post: 148028, member: 30"] Re: Speaker protection Here is the math. If your speakers are 1000 watt peak-then that means 250 watt continuous. So half power would be 125 watts. Assuming they are 8 ohms, that would be 31.6V. Basic ohms law. So now that we know what voltage you are looking for, you need to set up the limiter. Put a sine wave tone into the system (in the middle of the loudspeaker freq range) and DISCONNECT the speakers. Turn it up until it is above 31V-lets say 40V. Now simply turn down the limiter threshold until your meter (AC voltmeter on the amplifier output terminals) reads 31V. This is a VERY BASIC setup-and there are a number of variables that can affect the "proper" setting. But it is a good start. [/QUOTE]
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