Hello guys!
Got in hands this Sony DAV-DZ120K home theater with some dead components, but the speaker boxes are in great condition, so i was thinking in use these boxes in a custom self-made receiver to my pc (with a 5.1 audio card, the original receiver only have a stereo input, an advantage of building my own XD).
https://servlib.com/sony/dvd/dav-dz520k-dav-dz620k-ss-ct51-ss-ts51-ss-ws51-ss-ws52.html - Speakers manual
https://www.sony.com.au/electronics/support/res/manuals/2675/26753271M.pdf - Receiver manual (pag. 88 - Amplifier specs)
Starting with the speakers ready, the amplifiers that i was thinking in use are the TPA3221, because according to DZ120K manual, each speaker works in about 133W 10% THD (But i'm affraid of using this specs as reference, should i trust?) the TPA deliver 112W@3Ohms 10% THD, it's enough power for me. It's my first contact with a class D amplifier design, so i need some advices about designing. I followed the datasheet and the evaluation board user guide informations of the TPA, but an additional knowledge is always welcome
Thinking in use some active filters to deal with the frequencies, i found the LME49743 in texas instruments, it's a good choice? Any advice to starting designing a 2 order filter?
Thanks for the attention!
Got in hands this Sony DAV-DZ120K home theater with some dead components, but the speaker boxes are in great condition, so i was thinking in use these boxes in a custom self-made receiver to my pc (with a 5.1 audio card, the original receiver only have a stereo input, an advantage of building my own XD).
https://servlib.com/sony/dvd/dav-dz520k-dav-dz620k-ss-ct51-ss-ts51-ss-ws51-ss-ws52.html - Speakers manual
https://www.sony.com.au/electronics/support/res/manuals/2675/26753271M.pdf - Receiver manual (pag. 88 - Amplifier specs)
Starting with the speakers ready, the amplifiers that i was thinking in use are the TPA3221, because according to DZ120K manual, each speaker works in about 133W 10% THD (But i'm affraid of using this specs as reference, should i trust?) the TPA deliver 112W@3Ohms 10% THD, it's enough power for me. It's my first contact with a class D amplifier design, so i need some advices about designing. I followed the datasheet and the evaluation board user guide informations of the TPA, but an additional knowledge is always welcome
Thinking in use some active filters to deal with the frequencies, i found the LME49743 in texas instruments, it's a good choice? Any advice to starting designing a 2 order filter?
Thanks for the attention!
