| || ||Thread Tools||Search this Thread|
|4th December 2007, 00:45||#62|
Join Date: Jan 2007
Thanked: 3 Times
i just read "[SIZE=3]The amplifier is capable of producing only 205 true watts (RMS power). When using a speaker, it appears to be able to produce as much as 376 watts (which it clearly is not capable of doing)."
[/SIZE]do you know why this happens?
and secondly, how true are the ratings by these brands? aren't they certified by CEA and compliant to certain tests? i'm sure they would, otherwise they would be sued.
|4th December 2007, 11:29||#63|
Senior - BHPian
Join Date: Mar 2006
Thanked: 294 Times
Because of the speaker does not have fixed resistance and in the test fixed resistance is used. Also the speaker resistance varies with the freq at which we test it..
That I dont know that they can be sued as there are also loop hole in every method. and the CEA standards are very like (taken for the cea aritcle)
Output Power: All amplifiers are designed to deliver power. This is the spec that indicates just how much power an amplifier can provide. The reference characteristics for this pec are tightly controlled, so this spec provides a true apples-to-apples comparison thatís useful when youíre trying to figure out which amplifier to buy. Primary Output Power is always expressed as watts RMS and measured with 14.4V DC supply, a 4-ohm load, and with 1% or less total harmonic distortion in the amplifierís output. You may be thinking, Hey, wait a minute. If Iím going to drive a 1-ohm load, how will I know how much power the amplifier will make driving that impedance?Ē There are other specs included in CEA 2006 that indicate the output power of the amplifier for specialized use, like lower impedance, different supply voltage, or with multiple channels bridged.
The whole article (thanks to JBL)
|Thread Tools||Search this Thread|
|Thread||Thread Starter||Forum||Replies||Last Post|
|ICE ICE baby. Punto"ICE"fied||Soccerfan||In-Car Entertainment||45||10th March 2012 21:40|
|ICE ICE Baby!!!!!!!!(Swift ICE)||scarlet.fever||In-Car Entertainment||21||23rd September 2009 20:25|
|Lancer.ized got his Lancer.iCED||Lancer.ized||In-Car Entertainment||46||4th May 2009 12:14|
|"IMAGE" Autopsyche Lancer ICE Install Pics||gunbir||In-Car Entertainment||53||20th September 2006 01:06|
|"VEGA" Autopsyche Lancer ICE Install Pics||gunbir||In-Car Entertainment||18||1st May 2006 15:06|