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Chip Amps Amplifiers based on integrated circuits

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Old 6th August 2011, 08:01 AM   #11
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It is the circuit topology ,based on how output devices work ( consequently ,on how they're driven) .
You just need the amplifier which would provide enough current to pump the driver .
Given that subwoofers work in a very narrow band , you can MAXIMIZE the power requirement ,trading bandwidth for efficiency .
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Old 7th August 2011, 01:15 AM   #12
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I personally am not into Class D design although I do like the technology very much.
Class D uses Pulse Width Modulation to create an ampilfied analog signal for the speaker to opreate on.

This is very diferent From class A or AB designs wich are strictly linear in their operation.

Their are many Class D configurations to choose from ranging from IC's to discrete configurations and are typicaly over 90% effecient.
And from what I understand you can build quite a Hefty amp for pretty cheap that has very good specs.
There is a whole forum section here just for Class D operation and alot of very knowledgable people that could give you a better answer than I as to what is available and what works good.

I am mostly an analog buff but one day I will venture down the road of Class D myself.

Cheers! jer
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Old 8th August 2011, 05:02 AM   #13
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I am tryin to find out a proper circuit diagram, thank you all gentlemen anyway
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