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Long term over-voltage events are generally rare but when they occur can be damaging.
Undersized distribution infrastructure coupled with periods of high demand can lead to utility companies increasing voltages so that the power required can be supplied.
In some rural areas utilities will leave capacitor banks in during periods of low demand (i.e. on the weekend and holidays) which can lead to higher than normal voltages.
Regulated linear power supplies will dissipate more heat in an over-voltage situation causing potential equipment overheating. High voltages can also cause breakdown of electronic components such as capacitors operating close to their rated voltage in the unregulated supplies typically found in amplifiers.
Clint, an avid DIYer, planned on building his own home theater to cut costs until he realized the complexity of the task. "One piece of advice I came across most often was to hire a professional. I was hesitant, but I just found myself going in circles and didn't want to invest in something I'd later regret."
Nyal Mellor, Founder, Acoustic Frontiers
Nyal Mellor
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