Members Pro Sound Guy Posted March 20, 2013 Members Share Posted March 20, 2013 There have been alot of questions about these amps.I found some info that might give everyone a little more insight on this class D design.Class D is not going away, and big Iron amps eventually will IMO. http://forum.speakerplans.com/behringer-inuke-nu6000-vs-kam-kxd7200-bench-tested_topic69202_page1.html Link to comment Share on other sites More sharing options...
Members wesg Posted March 20, 2013 Members Share Posted March 20, 2013 Interesting. Can anybody translate what's going on with the Behringer's power supply? I know that for a non-linear power factor, the voltage and current draw curves do not align. I don't understand how the amp could be drawing 80A without tripping the internal 12A breaker or the breaker in the panel. Link to comment Share on other sites More sharing options...
Members Rob_H Posted March 20, 2013 Members Share Posted March 20, 2013 Thanks for sharing, That thread was awesome! Interesting to see the data presented objectively...Viktor over there is obviously not a B fan, but loved his comparison to the design not even meeting low level automotive standards. It is pretty unfair to be comparing a $400 amp to a $2000 PKN though, but his rants were entertaining any way. I was surprised a little at some of the blunders internally on the KAM with the twist ties holding the top board in (seriously?), air movement over the caps etc, made me want to rip the lids off one of my CPX amps which I will do over the weekend and share some pics. I hadn't even heard of the KAM brand before, not sure if they sell in North America or if it is more of a European thing, or maybe it is just in a different price range than I ever look in. Link to comment Share on other sites More sharing options...
Members agedhorse Posted March 20, 2013 Members Share Posted March 20, 2013 wesg wrote: Interesting. Can anybody translate what's going on with the Behringer's power supply? I know that for a non-linear power factor, the voltage and current draw curves do not align. I don't understand how the amp could be drawing 80A without tripping the internal 12A breaker or the breaker in the panel. The CB's are thermal, meaning that they respond to average current versus time not peak current and not instantaneously. Now for seafety reasons, the CB's are sized to approx. 125% of the rated 1/8-power figure generally (though this is not an absolute). If you were to drive rated power at 4 ohms or 2 ohms for more than a very short time, they would open. Link to comment Share on other sites More sharing options...
Members Pro Sound Guy Posted March 21, 2013 Author Members Share Posted March 21, 2013 Best to have some good AC power supplied to this design if you have a rack of them and driving them hard Link to comment Share on other sites More sharing options...
Members Rob_H Posted March 21, 2013 Members Share Posted March 21, 2013 I found another really interesting thread over there, link is below. It is long, at 93 pages, but it really opened my eyes on a couple of fronts; first how prevalent knock off gear really is out there and second what disasters may be waiting inside a used amp purchase. I found a lot of great info in it, thanks again for sharing the original link. http://forum.speakerplans.com/amp-internals-2_topic44897_page1.html Link to comment Share on other sites More sharing options...
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