I am looking for one with low noise/hum (all my previous amp do have buzz/hum and having a speaker relay preferred) and should be able to output around 100W (bridged/parallel or both).
Also I want to ask for advice is this a good schemes?
http://s.eeweb.com/members/leslie_perjes/projects/2011/12/14/TDA-Modular-amp-1323856446.pdf
Also I want to ask for advice is this a good schemes?
http://s.eeweb.com/members/leslie_perjes/projects/2011/12/14/TDA-Modular-amp-1323856446.pdf
that tells us and should tell you that you have not yet learned how to wire up your amplifiers correctly.
There is no point in making your assemblies more compleicated and hoping that you won't make the same or similar mistakes in your wiring again.
Any dual chipamp is more complicated than a monoblock. Get a monoblock correct and hum free, then you are ready to progress.
Do you, by any chance has a guide or info regarding this wiring? Yes indeed I guess I need to learn.
Andrew is correct. You need to be sure you know how to wire a board up to a power supply and speaker. You have to pay attention to where the current is flowing and avoid ground loops, especially in a high current circuit like this.
Haphazard ground schemes can lead to noise and distortion. The best amplifier will never perform to its potential unless wired correctly.
Maybe you should buy some inexpensive preassembled boards and see if you can wire them up to work correctly. Once you feel confident, then you can build your own amplifier. I recommend getting boards that other people have used and vetted. Don't even think about designing your own board until you have a solid understanding of grounding principles.
Finally, you need to understand how the circuit works. Start by understanding the datasheet circuit. These chips are controlled by logic and if you don't understand, you'll have a hard time figuring out why it doesn't work. The datasheet covers this in great detail, so check it out.
Haphazard ground schemes can lead to noise and distortion. The best amplifier will never perform to its potential unless wired correctly.
Maybe you should buy some inexpensive preassembled boards and see if you can wire them up to work correctly. Once you feel confident, then you can build your own amplifier. I recommend getting boards that other people have used and vetted. Don't even think about designing your own board until you have a solid understanding of grounding principles.
Finally, you need to understand how the circuit works. Start by understanding the datasheet circuit. These chips are controlled by logic and if you don't understand, you'll have a hard time figuring out why it doesn't work. The datasheet covers this in great detail, so check it out.
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