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<blockquote data-quote="John Roberts" data-source="post: 67136" data-attributes="member: 126">Re: Crest repair center neededMy &quot;OK&quot; comment was not referring to reliability which is only loosely associated with program material, but whether the short term nature of the burst power would be apparent in use on subs. I had to qualify my response to &quot;most&quot; since A) I am not personally familiar with the crown amps, and B) some program material is silly bass-heavy (dance/trance/nuance). There is a mild association with heat and reliability. MTBF (mean time between failure) doubles for every 10&#039;C drop in operating temperature, but I suspect most amp failures are not remotely near end of life general deterioration. Reliability of power amps is dominated by design rigor. Most amp brands with recognizable names have tons of experience with where the weak links are in their designs (from decades of service experience)&nbsp; and every new generation gets stronger in an rational world. Secondary effects that can impact reliability, are execution of that design, that can be compromised by inferior components or workmanship, and conditions in use. Elevated ambient temps, or out of tolerance mains voltage could have an impact. I am not smart enough to know what your particular amps are suffering from, if they are suffering from anything more than normal wear and tear. If they are out of warranty, this isn&#039;t exactly infant failures. Again good luck with your drama. JR</blockquote>

[QUOTE="John Roberts, post: 67136, member: 126"] Re: Crest repair center needed My "OK" comment was not referring to reliability which is only loosely associated with program material, but whether the short term nature of the burst power would be apparent in use on subs. I had to qualify my response to "most" since A) I am not personally familiar with the crown amps, and B) some program material is silly bass-heavy (dance/trance/nuance). There is a mild association with heat and reliability. MTBF (mean time between failure) doubles for every 10'C drop in operating temperature, but I suspect most amp failures are not remotely near end of life general deterioration. Reliability of power amps is dominated by design rigor. Most amp brands with recognizable names have tons of experience with where the weak links are in their designs (from decades of service experience) and every new generation gets stronger in an rational world. Secondary effects that can impact reliability, are execution of that design, that can be compromised by inferior components or workmanship, and conditions in use. Elevated ambient temps, or out of tolerance mains voltage could have an impact. I am not smart enough to know what your particular amps are suffering from, if they are suffering from anything more than normal wear and tear. If they are out of warranty, this isn't exactly infant failures. Again good luck with your drama. JR [/QUOTE]

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