how to calculate rms power at 4 ohms

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daniel gt1

Copper - Posts: 55

Joined: October 30, 2009

Location: Trinidad and Tobago

Posted: March 30, 2010 at 1:40 PM / IP Logged

what's the formula for calculating watts on any amp..eg : a boss chaos 3000 mono block...I know you hav to add all the fuses and u do the maths... how to calculate rms power at 4 ohms - Last Post -- posted image.

how to calculate rms power at 4 ohms - Last Post -- posted image.

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smtgolf

Member - Posts: 44

Joined: February 04, 2010

Location: Indiana, United States

Posted: March 30, 2010 at 2:03 PM / IP Logged

Check the power calculator page on this site

Power Calculators

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daniel gt1

Copper - Posts: 55

Joined: October 30, 2009

Location: Trinidad and Tobago

Posted: March 30, 2010 at 2:18 PM / IP Logged

smtgolf wrote:

Check the power calculator page on this site

Power Calculators

There are three Current calculators bro...which one do i hav to use ?...

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ianarian

Copper - Posts: 516

Joined: April 24, 2009

Location: California, United States

Posted: March 30, 2010 at 2:43 PM / IP Logged

Any 2 known values, can be used to calculate the 3rd value. In your case you want to know (P)-Power, measured in watts. You know your (R)-Resistance, measured in ohms. Hopefully you know the (E)-Voltage measured in VOLTS:) of the system. (E x E) / R = P <---after those maths(<---) There will be a efficiency associated to amp type, it will take more maths(<---) to get a estimate of the actual rating you're looking for. I believe its called (pf).

This is what I do for FUN!

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how to calculate rms power at 4 ohms

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