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<blockquote data-quote="John Roberts" data-source="post: 132443" data-attributes="member: 126">Re: Opinions on limiting for speaker protection&quot;Limiter&quot; or more accurately voltage limiters are fairly crude forms of protection. Ideally we should measure, model, or impute voice coil temperature and manage that to avoid failure or even avoid power compression which occurs before thermal failure. Likewise DSP can estimate or predict excursion from the audio waveform and reduce gain if needed to thwart that. So yes my opinion is that smart speaker protection is useful. Speaker protection is about the speakers, not the gig (or amp), so when set to protect the drivers it should not need to be changed ever. If you rarely lose drivers in 30 years maybe you don&#039;t need to change anything, unless you already changed something like amps or boxes. My personal preference is for the speaker design engineers to dial in the protection and to do that well involves powered speakers where the design engineers have access to more data and full system control. A close second is something like the protection circuitry that is built into the drivers (DFEND?) but that is more expensive than the whole system approach of a powered cabinet. &nbsp;JR</blockquote>

[QUOTE="John Roberts, post: 132443, member: 126"] Re: Opinions on limiting for speaker protection "Limiter" or more accurately voltage limiters are fairly crude forms of protection. Ideally we should measure, model, or impute voice coil temperature and manage that to avoid failure or even avoid power compression which occurs before thermal failure. Likewise DSP can estimate or predict excursion from the audio waveform and reduce gain if needed to thwart that. So yes my opinion is that smart speaker protection is useful. Speaker protection is about the speakers, not the gig (or amp), so when set to protect the drivers it should not need to be changed ever. If you rarely lose drivers in 30 years maybe you don't need to change anything, unless you already changed something like amps or boxes. My personal preference is for the speaker design engineers to dial in the protection and to do that well involves powered speakers where the design engineers have access to more data and full system control. A close second is something like the protection circuitry that is built into the drivers (DFEND?) but that is more expensive than the whole system approach of a powered cabinet. JR [/QUOTE]

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