Power consumption of Home theater=Sound watts?

Hi Guys;

Is the power consumption of the home theater same as the sound that comes from it?If a system says 1000W PMPO means it draws 1000W of power when it operate?is it a lot more than a normal laptop like Acer 3820TG?

Thanks

 

You will see a tag near the power cord that will give you the max wattage consumption , usually expressed in VA
That is the best way to tell

1000w peak rating can vary as there is not standards and manufacturers exaggerate this spec , most high quality equipment states power output in rms

 

Generally some of the power is going to be wasted as heat, which is why receivers get as hot as they do. A laptop will not draw anywhere near 1 KW; most have power supplies under 100 watts unless they are high end gaming laptops or are large desktop replacements. Desktop computers can draw a few hundred watts, and some super high end desktops will be equipped with 1 KW+ power supplies, although a lot of the time they won't actually draw that much during normal usage.

 

Hardly. At least not continuously. You see when it comes to music, that amount of power draw is best given as an average (or maximum) depending on the passage and how dynamic the music is.

In the case of your figure the PMPO, refers to peak, or momentary power output level.

 

Thanks guys for the replies.Rep'd all of you.

So RMS rating is a good indication of the power draw?Really a satellite speaker consume about 50% of a laptop's power?Sounds really high!

 

Well rms will narrow it down a bit, depending on efficiency and load

2 channels @ 500W @ 4 ohms 2100W is the specs for one of my power amps
So if it is being maxed out for a total of 1000w rms to the speakers it draws 2100watts from the wall plug, this is a $2500 power amp that weighs 50lb
I have tripped 15amp breakers with this setup
In this instance you see there is a large loss when converting the power to the speakers
And that spec is only when you are cranking on it to the max
Just as others have pointed out ,a desktop computer power supply rated @ 400watts might only be suppling 100watts 90% of the time

Look for the specs for current draw as I pointed out before, that way you will know the max power the unit will draw

 

spend like $20 on one of these and know for sure with no guess work.

Newegg.com - P3 Kill A Watt Electricity Load Meter and Monitor

Also it is good for finding how much power things like a home theater system draw when turned OFF, things like cable boxes and amplifiers are commonly drawing power even when you have them off, and of course it can tell you how much the unit uses when on in real time. So you can watch the meter and see how much it fluctuates based on load.

Can even put it in KW/H mode and let it run for an hour and get a power/time reading. Useful for a device with a lot of fluctuation in power draw.

 

RMS is a much more realistic measurement of power usage/output. However, since it's typically about 10X less than peak or dynamic power, it's also a much less impressive rating to publish.

Incidentally, a laptops speaker output and a home stereo output are two totally different things and should never be confused nor compared. It would be like comparing the performance of a Ferrari to that of a city bus.