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<blockquote data-quote="Ivan Beaver" data-source="post: 122410" data-attributes="member: 30">Re: matching amp with speakersI agree with Art.&nbsp; I also grew up in the age of no highpass filter for the lows.I tore up hundreds of drivers.&nbsp; That is why I got into reconing-to save me money and make some extra on the side. <img src="https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f642.png" class="smilie smilie--emoji" loading="lazy" width="64" height="64" alt=":)" title="Smile&nbsp; &nbsp; :)"&nbsp; data-smilie="1"data-shortname=":)" />Typically the only damage from over excursion was due to worn out- or damp cone or sometimes a large pulse that went through the system.At least &quot;back in the day&quot; burnt voice coils were the normal failure.Of course we did not have the large amps capable of the large voltage swings that we do now.&nbsp; So it was more of an &quot;average power&quot; that killed the speakers.And we did not have the adhesives that could handle the higher temps like today.Oh how things have changed so much in my lifetime.And what is truly sad (warning topic serve) is that we have all sorts of tools for predicting sound-measuring sound-adjusting all sorts of parameters (DSP) and yet I am not convinced that the &quot;overall&quot; sound quality that people hear is any better.&nbsp; In many cases it is worse-because now cheap gear is available to anybody who does not have clue how to use it-and all they want is &quot;loud&quot;.At least &quot;back in the day&quot; audio gear was more expensive-so that helped keep the &quot;riff raff&quot; out.It was also MUCH harder to use.&nbsp; Just go back to when you had to match impedances for all the gear to get the most power transfer between units.&nbsp; If you did not all sorts of weird things would happen-including VERY altered freq response.Just ask anybody who has tried to use a passive White EQ into a modern amp with a high input impedance--------------------&nbsp; It could drive you nuts-until you terminated it with a 600 ohm resistor.Sorry for the rant..</blockquote>

[QUOTE="Ivan Beaver, post: 122410, member: 30"] Re: matching amp with speakers I agree with Art. I also grew up in the age of no highpass filter for the lows. I tore up hundreds of drivers. That is why I got into reconing-to save me money and make some extra on the side. :) Typically the only damage from over excursion was due to worn out- or damp cone or sometimes a large pulse that went through the system. At least "back in the day" burnt voice coils were the normal failure. Of course we did not have the large amps capable of the large voltage swings that we do now. So it was more of an "average power" that killed the speakers. And we did not have the adhesives that could handle the higher temps like today. Oh how things have changed so much in my lifetime. And what is truly sad (warning topic serve) is that we have all sorts of tools for predicting sound-measuring sound-adjusting all sorts of parameters (DSP) and yet I am not convinced that the "overall" sound quality that people hear is any better. In many cases it is worse-because now cheap gear is available to anybody who does not have clue how to use it-and all they want is "loud". At least "back in the day" audio gear was more expensive-so that helped keep the "riff raff" out. It was also MUCH harder to use. Just go back to when you had to match impedances for all the gear to get the most power transfer between units. If you did not all sorts of weird things would happen-including VERY altered freq response. Just ask anybody who has tried to use a passive White EQ into a modern amp with a high input impedance-------------------- It could drive you nuts-until you terminated it with a 600 ohm resistor. Sorry for the rant.. [/QUOTE]

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