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Class D Switching Power Amplifiers and Power D/A conversion

D amp > 800 w rms ?
D amp > 800 w rms ?
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Old 7th September 2008, 09:57 AM   #1
Mordor is offline Mordor  Italy
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Default D amp > 800 w rms ?

I would build an d amp about 800 1000 w rms for my car subwoofers ( 2 x eminence pro 15" subwoofers ). Power supply isnt a problem, i use an atmel micro to drive mosfet. Now, i want make a D class amp for first time. I see many schematic, and tutorial.. I have some question.
With irs20124 and 100 + 100 vdc can i give 1000 w rms from 20 to 200 hz bandwith? There's some working schematics of amp with irs20124?
help me please! ( sorry for my bad english )
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Old 9th September 2008, 11:46 AM   #2
acid_k2 is offline acid_k2  Italy
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I think it's not a good idea.
So much power will burn almost every speaker in the world, in a short time...

for your amp, you can start from: http://www.diyaudio.com/forums/showt...=&pagenumber=1
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Old 9th September 2008, 10:53 PM   #3
Eva is offline Eva  Spain
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+/-100 V will theoretically produce 1250W rms on 4 ohms, but if you didn't already know that, you have a whole lot of electronics to learn before you can design any class D amplifier.

Same goes for the bandwidth, it depends on the type of modulator and the output filter, but 200Hz is very easy to get with almost any circuit.
I use to feel like the small child in The Emperor's New Clothes tale
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