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how to measure power of system

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Old May 22, 2007 | 10:18 AM
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how to measure power of system

just put a system in my 03 oz, how would i measure how much power watts in total my system is pushing.

i have 2 12" subs,4 chann,mono,spks, hu
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Old May 22, 2007 | 11:30 AM
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Wattage is just a measue of how much power an amplifier puts out.

If you want to know what the maximum output for your entire stereo system is in Watts, you need to look and see what the max output is for the amplifier (or amplifiers) you're using.

If you're using an amp that's rated at 100X4 (4 channels with 100 watts each)then you have a maximum of 400 watts - for example.
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Old May 22, 2007 | 12:16 PM
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P = E x I

Just because something says 400 watts or whatever does not mean that is what your pushing.

To find true wattage output of the amp, you would need a DC current clamp meter and measure amperage draw on the wire feeding the amp and at the same time measure voltage. That is how you find wattage.
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Old May 22, 2007 | 07:16 PM
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so if my 4 channel peaks at 1794 watts and the mono pushes a max of 1170 watts

my system is roughly pushing 2964 watts? right?
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Old May 23, 2007 | 12:06 AM
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If this were Pimp My Ride, yeah, it would be that simple.

Like was already posted before, you need to measure the AC voltage output from you amp, the resistance of all of your speakers, and then have fun with the formula that I would post if I have it right in front of me.

Just do a search on google or something and you can find it. Easiest way to find it is to search for "Ohms Law"
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Old May 23, 2007 | 04:16 AM
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I allready posted the formula for wattage. Wattage=P, voltage=E, amps=I

When you get peak amperage, multiply that times voltage at that time and there is true wattage. That is all you need
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Old May 23, 2007 | 08:37 AM
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ok that sounds good i will try measureing the two amps thanks.
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Old May 23, 2007 | 11:52 AM
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Originally Posted by Dennis F
Just because something says 400 watts or whatever does not mean that is what your pushing.
I agree - you won't be pushing 400 watts at half volume.. But at maximum output level with speakers rated at the recommended ohm rating for the amplifier, it should be exactly what the amp says -- 400 watts. Right?
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Old May 23, 2007 | 12:47 PM
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Not really. Amplifiers are rated at max power for what it *could* produce at peak performance.

If an amp says it can do 400 watts, it probably can for 1 second before it goes into protection. It could not sustain 400 watts of total power for very long.

You wil be surprised if you follow my directions to measure wattage. Most people who claim 1000 watts or whatever, are really around 80 - 100 watts. Doesn't take much to make a lot of noise.

Another indicator would be to get to a car stereo shop that has a real time anilyzer. That will tell you in decibals who loud your car is.
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Old May 23, 2007 | 01:13 PM
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Are we talking RMS or Peak Power?
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Old May 23, 2007 | 07:13 PM
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peak

also depends on the settings of your amp too, but we all have discussed and know that factory specs are bull, just take a look at audiobahn and power acoustik

just because it says 1000 max doesnt mean your gonna ever get it
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Old May 23, 2007 | 09:02 PM
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You could with 60% THD. But at that level, is it worth it? I think not.
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Old May 24, 2007 | 01:09 AM
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Can anyone tell me what the RMS of a JBL 1200.1 is? I have been told that running in 2 ohm it puts out 1200 RMS, but has been benchmarked at 1380 RMS @ 2 ohm. I just recently fried the voice coils on 2 SVC clif design subs that said they were 600 max.... maybe I just f--ed up the wiring running it in paralell.... I dunno...
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Old May 29, 2007 | 08:32 PM
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if you want a measure on how loud it is, buy a meter...if you want to measure wattage...just look on you amps, if you have a 1200 x 1 running you sub an a 200 x 2 running your comps...well then u hvae 1400 watts running through you car...not that hard...
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Old May 29, 2007 | 08:34 PM
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Originally Posted by Evo_Someday
Wattage is just a measue of how much power an amplifier puts out.

If you want to know what the maximum output for your entire stereo system is in Watts, you need to look and see what the max output is for the amplifier (or amplifiers) you're using.

If you're using an amp that's rated at 100X4 (4 channels with 100 watts each)then you have a maximum of 400 watts - for example.
this is not correct. if you have a 100 x 4 then it is 100 watts divided by 4 channels (aka 25 watts per channel, unless you bridging)
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