Monday, July 15, 2013

Is more electricity consumed when you elevate the volume of a tv or stereo?

led tv 90
 on tv the tv boasts a full 1080p high definition screen
led tv 90 image



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I have a 90 watt stereo and have always wondered if it uses more energy when playing music loud. The same applies to other devices. Is there a direct relationship between decibels and electricity?


Answer
There is, but the difference is more theoretical than practical. In terms of any difference on your power bill, you're really not going to see anything.

In U.S. systems, a 90 watt device draws less than one additional amp, above the idle state, on audio peaks from a standard 15 amp household electrical circuit, and such peaks are obviously not constant. So "more electricity?" Basically, yes, but not enough to matter.

Running a 90-watt amp full bore can cause other issues like damaged eardrums and pictures falling off the wall, but that doesn't significantly affect your power load unless you're doing something really odd like a constant, unchanging tone that keeps the amp on max output for a lengthy period.
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Followup for #1 Mom: that TV guy is leading you astray. If you bought a conventional LCD set (not LED), the backlight is a fluorescent lamp that will eventually burn out. Leaving a TV on full time actually made sense 40 years ago with all-tube TVs (the worst thing you can do to a vacuum tube is turn it on), but that's not true with a TV that has no tubes. If you're not going to watch your flatscreen for maybe 30 minutes or more, I'd definitely be turning it off.

Can an led cpu monitor perform as well as and led hdtv?




Dog


I don't watch any tv. I do like to watch movies and stream tv shows, however. Is the quality comparable if this is all I need it for?


Answer
my opinion yes
i watch 90% of movies and tv programs on my 28" monitor (+ pc)
as the quality is better than my 32" tv
both are full hd 1920 x 1080/1200




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Title Post: Is more electricity consumed when you elevate the volume of a tv or stereo?
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