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Crazy idea for a powered sub
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<blockquote data-quote="John Roberts" data-source="post: 48431" data-attributes="member: 126"><p>Re: Crazy idea for a powered sub</p><p></p><p></p><p></p><p>Power amp design is a little more complicated than just throwing the circuit boards together on a metal plate. While I am not intimately familiar with the inner workings of the CE4k iirc it is class D, which raises the significance of layouts and wire paths even more, not to mention possible RF emission issues without a fully enclosed chassis (so even if it works it could interfere with wireless mics et al). In power amps, because of the high currents involved lots of subtle details matter that don't so much in lower current designs. Big consoles have a similar duality with "simple but difficult to do well" because of noise and crosstalk buildup and...</p><p></p><p>Not trying to argue that this is high tech rocket science, but it isn't quite gardening either. </p><p></p><p>JR</p><p></p><p>PS: I recall back in the very early days of class D amps, when some small company tried to knock off the first generation Peavey class D amp. They copied the schematic verbatim, but still couldn't get it to work right because of PCB layout issue (not that the early Peavey class D worked all that great).</p></blockquote><p></p>
[QUOTE="John Roberts, post: 48431, member: 126"] Re: Crazy idea for a powered sub Power amp design is a little more complicated than just throwing the circuit boards together on a metal plate. While I am not intimately familiar with the inner workings of the CE4k iirc it is class D, which raises the significance of layouts and wire paths even more, not to mention possible RF emission issues without a fully enclosed chassis (so even if it works it could interfere with wireless mics et al). In power amps, because of the high currents involved lots of subtle details matter that don't so much in lower current designs. Big consoles have a similar duality with "simple but difficult to do well" because of noise and crosstalk buildup and... Not trying to argue that this is high tech rocket science, but it isn't quite gardening either. JR PS: I recall back in the very early days of class D amps, when some small company tried to knock off the first generation Peavey class D amp. They copied the schematic verbatim, but still couldn't get it to work right because of PCB layout issue (not that the early Peavey class D worked all that great). [/QUOTE]
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