posted
To get truly accurate figures your are going to have to have some fairly expensive/extensive test equipment. However, you can test the Maximum AC voltage attainable at the + and - leads of the amp, just to give you some idea of where you are at. The power output is obviously dependent upon the impedance of the speaker and impedance rise of the enclosure, but like i said.. it just gives you an idea.
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posted
This is how I do it. You need a voltage meter, AC, and an Ammeter, clamp style. Burp the system and measure the AC voltage across the speaker leads. At the same time, use your Ammeter clamped on to one of the two speaker leads, positive or negative, and this will give you the amperage. do the following:
AC volts / Amperage = I
"I" gives you the impedence at that given frequency.
Now, multiply the voltage by itself, voltage squared, and divide it by the impedence. This will give you the total power into the speaker.
I could be wrong, but I am pretty sure how it is done. Hope this helps!
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posted
ya that was my post on the how to find the real out put of amps ampclamping vrs rms, im glad someone answed i bought a ton of test equpitment off the mack tools truck and two of the new tools was the ET330 by tektronic and the matching ampclamp that the leads plug into the meter thanks for the info i greatly appreciate it- jeff
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Posts: 1314 | From: wayland,ny 14572 United States of America | Registered: Mar 2000
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quote:Originally posted by H JACK: This is how I do it. You need a voltage meter, AC, and an Ammeter, clamp style. Burp the system and measure the AC voltage across the speaker leads. At the same time, use your Ammeter clamped on to one of the two speaker leads, positive or negative, and this will give you the amperage. do the following:
AC volts / Amperage = I
"I" gives you the impedence at that given frequency.
Now, multiply the voltage by itself, voltage squared, and divide it by the impedence. This will give you the total power into the speaker.
I could be wrong, but I am pretty sure how it is done. Hope this helps!
Power = Voltage x Intensity (amperage) There is no need to figure impedance in there, just take your voltage and amperage readings and multiply them.
------------------ rybaudio@hotmail.com
The goal: Accurate musical reproduction in the mobile environment
Posts: 3961 | From: State College, PA | Registered: Sep 2000
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posted
I forgot to say, make sure your volt meter measures rms voltage or if yours measures peak voltage, multiply the voltage times .707 before you plug it into the equation.
------------------ rybaudio@hotmail.com
The goal: Accurate musical reproduction in the mobile environment
Posts: 3961 | From: State College, PA | Registered: Sep 2000
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