Texas5 1st Gear December 29, 2007 Share December 29, 2007 oh ok note, thanks ↡ Advertisement Link to post Share on other sites More sharing options...
Penthousepauper Clutched December 29, 2007 Share December 29, 2007 The words 'watts RMS' is intended to show the continuous average power output of an amplifier measured using the correct test signal (a sine wave) in accordance with US standard guidelines; the correct period of time for measurement (more than five minutes), a properly calibrated, true RMS-reading voltmeter with an accuracy of better than 1% of reading, without exceeding a specific level of distortion (0.1%) into a defined load (usually 8-ohms) with the amplifier first having been pre-conditioned by means of driving all channels simultaneously with a 1kHz sinusoidal signal to a nominal power output into the rated load equal to 33% of the rated power output for at least hour (or more if protective circuitry interfered with continuous operation). Link to post Share on other sites More sharing options...
Gkfj Neutral Newbie December 29, 2007 Share December 29, 2007 power ! Link to post Share on other sites More sharing options...
Rentalz Neutral Newbie April 14, 2008 Share April 14, 2008 Root mean square Link to post Share on other sites More sharing options...
Shonewillym Neutral Newbie December 21, 2009 Share December 21, 2009 what you're asking is like asking what color cup would hold 8 ozs.... When purchasing an audio system, Link to post Share on other sites More sharing options...
Shonewillym Neutral Newbie December 22, 2009 Share December 22, 2009 nice information to see that..... Link to post Share on other sites More sharing options...
Royang Neutral Newbie February 4, 2010 Share February 4, 2010 (edited) not sure about that it,Good done. Edited February 4, 2010 by Royang Link to post Share on other sites More sharing options...
RiCoLa Neutral Newbie April 5, 2010 Share April 5, 2010 thanks for the info Link to post Share on other sites More sharing options...
Picanto 3rd Gear April 8, 2010 Share April 8, 2010 Hi Bro Vic, welcome to mycarforum. Nice to see you here. As for your Pioneer HU, MOSFET 50w x 4 from what I understand, the average RMS for those MOSFET 50w is producing between 25w RMS to 27w RMS per channel. So 50w is just peak power. Hope this helps. How about coming for the Nasi Padang ICE meetup Wednesday night. You can get lots of help from those ICE kakis there. by the way, are such HU good enough to drive a pair of lanzer heritage coaxial speakers? specs of the speakers are 140W RMS. Peak is 280 RMS. Link to post Share on other sites More sharing options...
DeathAngel Neutral Newbie May 2, 2010 Share May 2, 2010 cool, i didnt know that :) Link to post Share on other sites More sharing options...
1fast1 Supersonic August 11, 2010 Share August 11, 2010 (edited) If only the peak value is indicated, RMS value is always at 70% of the peak. I think the peak power from an ideal sine wave input should be exactly twice the "RMS" power. "RMS" power is generally a misnomer, referring to average power, which is half the peak power when sine waves are involved. The reason the root-mean-square comes into the picture is when voltage or current is considered. The RMS voltage of a sine wave with a peak voltage of V is V/sqrt(2), which is about 70% of V (this is from basic integral calculus). But the average power (wrongly called "RMS" power) is still half the peak power because power dissipated by a simple resistive load is given by: P = (V^2)/R, so average P = (V/sqrt(2))^2/R = 0.5*peak P. Edited August 11, 2010 by Turboflat4 Link to post Share on other sites More sharing options...
Tinahogard Neutral Newbie August 20, 2010 Share August 20, 2010 (edited) Hi Every one For the geeks in the crowd, what follows is a technical description of what RMS means and how to compute it. If you are not technically inclined, then be warned that you may require counseling to return to normalcy, if you read further. Those who slept through less than 50% of high school algebra should be able to follow. Edited August 20, 2010 by Tinahogard Link to post Share on other sites More sharing options...
Floweradvisor Clutched September 7, 2010 Share September 7, 2010 Wow, very informative, thanks all. Link to post Share on other sites More sharing options...
Reinaldo Neutral Newbie October 1, 2010 Share October 1, 2010 RMS is a computer term ___________________ Reinaldo Link to post Share on other sites More sharing options...
1fast1 Supersonic October 1, 2010 Share October 1, 2010 (edited) RMS is a computer term ___________________ Reinaldo No it isn't. Root-mean-square is a statistical (mathematical) operation that has wide applications in statistics, probability theory (esp. random walks and other Markov processes), electrical engineering and other fields. Definitely not limited to, and not even especially important in, computer science. E.g. the usual standard deviation calculation used in statistics is an RMS = You take the square root of the mean of the squares of data values. RMS voltage and current are just the same term being used in the context of A.C. (Alternating Current) sources. RMS voltage and current follow the usual statistical definition. "RMS power" is a misnomer because (as I've mentioned before), when people use this term, they're most commonly referring to average (mean) power. Edited October 1, 2010 by Turboflat4 Link to post Share on other sites More sharing options...
Reinaldo Neutral Newbie October 1, 2010 Share October 1, 2010 Okay! I stand corrected. Yeah! you're right. In computer RMS is Remote Monitoring Systems but we're talking about automotive here. I'm integrating computer programs into my car that is why I thought it is computer term. Link to post Share on other sites More sharing options...
Forte3737 5th Gear October 1, 2010 Share October 1, 2010 we are talking ICE here Link to post Share on other sites More sharing options...
Alphas 2nd Gear December 10, 2010 Share December 10, 2010 typically for ICE 40W or more provide enought power for the speakers ↡ Advertisement Link to post Share on other sites More sharing options...
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