A Simple Yes Or No?

[EarmarkMarine]

Sometimes you just don't have the good sense to not keep this going so here you go with both 4-ohm and 2-ohm power. The following is the test gear and conditions in which the tests where conducted by an independent lab owned by Robert Zeff in the Pacific NW.
"All tests are performed with an Audio Precision 2322 Dual Domain Analyzer with the Aux-0025 filter for testing Class D amplifiers. The power supply is an Agilent 6000 watt unit fed from 3-phase service. Test loads are one-percent non-inductive resistors comprised of 500 watt for 4-ohm loads, 1000 watt or 2500 watt for 2-ohm loads and 5000 watt for 1-ohm loads. 1/0 gauge power and ground cable was used with the 14.4 volt voltage adjusted for measurement at the amplifier primary terminals to offset any voltage loss."
Here is the link to the Harpoon read-out. One channel is less power and one channel is more power. The two numbers are averaged.

http://www.earmarkcaraudio.com/Xcart...000.2Graph.jpg

I have all the needed power supply (200 amps), 2000 watts of load resistors, and test gear so that I can confirm the same results. Plus, anybody can figure out that a Class AB amplifier with 80 amps of fusing is going to be challenged to get to 1000 watts.

Now here is an interesting link on the older Exile x800.4 amplifier.

http://www.soundbuggy.com/Eric/Car%2.../exile/x800_4/

The Exile x800.4 was rated at 800 watts (4 X 200 at 2-ohms). And it met spec when Morgan West was with Exile (the real product guy). It had twin power supplies and get this....it had 120 amps of fusing!
So it is replaced with the newer Exile xi800.4 which has a single power supply and 60 amps fusing (ONE HALF) yet it maintains the same model designation and the same power rating. Draw your own conclusion but I call that flat out deceptive. We also tested the xi800.4 and it is only a fraction of the Exile power rating.

David

[zabooda]

I hate to further deviate from the original post but it appears that the chatter comes from CEA2006 evaluations being performed by different labs so the quality assurance of this process will never be exactly the same. Until you have one lab doing consistant work this will be a problem and makes the CEA2006 process questionable. You need to go to the guru of testing which still may be debatable.

I've seen that over and over except for nuclear grade components which are 10 times the cost of a commercial grade item. I don't have a horse in this race but your issues with each other is rather minor compared to the article I posted where the power in requirements will never get to the power out without devine intervention.

http://www.mobileedgeonline.com/mobi...f-2-amplifiers


There is no required governing body for car audio ratings. There are no testing laboratories that manufacturers have to send their equipment to. Any manufacturer can claim any power rating that they want. It’s that simple. (It is important to note that there is an industry standard called CEA 2006-B. Manufacturers are not required to take part in it. When comparing 2 amplifiers that are rated by CEA 2006-B guidelines you can get a good apples to apples comparison. Also, almost all of the reputable industry manufacturers use Cogent Laboratories in Chandler, Az for their testing and independent validation.)