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Nothing new. There have been 10kW and beyond linear amps built by companies like Crown.
Also some of the fellow members of this forum has built multi kilowatt amplifiers.
Also some of the fellow members of this forum has built multi kilowatt amplifiers.
well, who needs solid state PA today ?
but whatever, I dont understand your power supply, with negative and positive connected together
shouldnt they connect at ground instead ?
but whatever, I dont understand your power supply, with negative and positive connected together
shouldnt they connect at ground instead ?
this is power supply schematic..isnt clear?
copywrite material removed see link in first post
copywrite material removed see link in first post
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ahh, its Elliots design
then Im not clever enough to comment 😀
still looks weird, but whatever
for PA 😕 well I sure hope there is
you may risk to burn down the club with that thing
you know, that could kill people, in worst case
not reliable enough
1500Watt is already very high. In Class AB, the power loss is not negligible.
I would think about class G or class H.
I would think about class G or class H.
I think even Rod does not advice to build this amp, he even mentioned in his article that he will not provide any kind of assistance for this project so why take the risk of building this amp without any assurance from the circuit designer itself, as Sir moschfet just said why not try class G or class H. something like on this link which is already tested:http://www.diyaudio.com/forums/vendors-bazaar/177120-professional-class-h-amplifier-2kw-11.html
Get the book on big solid state amplifiers that Douglas Self wrote some years ago..
Amazon.com: Audio Power Amplifier Design Handbook, Fourth Edition (9780750680721): Douglas Self: Books
There are good designs in here, and even if you don't build one of these designs, the knowledge contained therein is priceless if you want to build the ESP amp you referenced.
Amazon.com: Audio Power Amplifier Design Handbook, Fourth Edition (9780750680721): Douglas Self: Books
There are good designs in here, and even if you don't build one of these designs, the knowledge contained therein is priceless if you want to build the ESP amp you referenced.
I see that you are using two bridge rectifier wired in parallel. The problem with that is that they will not share the power evenly. One of them will have slightly lower resistance when conducting. It will take ALL the current and over heat.
The way to make it work is to get some low ohm resisters and place them in series with the diodes. Then the resistance is even, at least to within the tolerance of the resistors. You loose a bit of power to heat but that beats a failed rectifier.
I also have to ask about your speakers. I assume you have a lot of them wired together. Why not use multiple amps? Why one large amp?
I am surprised that you would be building a PA amp with a single ended input. I'd guess for a PA amp you'd want a balanced XLR input. It would be easy to do, just use the other half of the differential amplifier in the input section.
A transformer would work too. Then you'd know you were 100% balanced.
I'd also think you would want some kind of limiter that is adjustable. With so much power you could blow speakers. Add some kind of soft clipping
I think you might have a problem with the mechanical layout. All those output transistor will take up some space and make for some longer wires. maybe you can distribute the power supply filter caps. Watch out for feedback via magnetic feilds from the output section wiring,
anyway, it would be 'standard' to do it balanced for this power, and especially with PA
running this amp at 130V is plain silly
now, two amps running balanced at 90V that would be...ups
😀
running this amp at 130V is plain silly
now, two amps running balanced at 90V that would be...ups
😀
there are issues with the design, Rod Elliot i think said as much.....so if you do not understand how the thing works....forget it.....do something like Rod Elliot's other amps....
the design was meant to be an April fool's joke.........best not to take the design seriously.........😀😉
Firstly, this is not the sort of derogatory comment one expects from a MODERATOR! I was under the impression that this forum had rules against such comments.
Secondly, it is my stated recommendation that no-one should build it, partly because Class-G is more efficient, but mainly because it's intended as parody (humour). Extremely large amps are available already, and speaker repairers love them because of the work they provide.
Finally, although you have slagged the design, it will work - several people have built it despite my pleas that they don't, and it is no more or less dangerous or unreliable than any other amp of similar power.
If you don't even understand the power supply, how can you possibly comment on the design with any credibility.
I'm not impressed. Moderators are supposed to be unbiased - clearly this isn't the case here.
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