Polk specifies the sensitivity of the these LSiM speakers as 88dB at 1 meter and 2.83V (not 1 watt). For illustration, we will use the Polk LSiM towers and bookshelf speakers that I own and use in my home theater. So, let’s use math to look at this question in a few simple steps. My favorite discussions of this and calculators are: Or: īut using such a calculator may not reveal why you need a certain amount of power for a given set of circumstances. The question is often asked, how much amplifier do I really need is my 80 watt per channel AVR going to drive my speakers to an appropriate listening level? One way to answer the question is to use one of the many calculators available.
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