12 volt Low-Cost Amplifier
- Aim is to build an amplifer for an Autorikshaw. Has to be low cost, music quality doesnt have to be great.
- Availability of Low Cost MP3 SOCs boards like the AX2008, AJT, etc. Looking at extending these SOCs for other things. They have on-board SOC from Appotech, etc, a USB connector, an SD reader, an FM receiver, a Remote and is available as a board for Rs 150 ie 3$ !!
- Can couple it with an amplifier. Got an amplifier for Rs 150 and this works on 12 V and is a dual bridged amplifier with roughly 15 + 15 Watts of power. Audio board mfd by Shan. It has bass and treble controls. Uses a dual SANYO 4440. Had to experiment with the connections: connect the MP3 player to the AMP to the speakers.
- Got the casing and accessories from Pooja electronics frm SP Road. Roughly 150 Rs and cheap speakers for Rs 50 without box.
- Audio quality is ok. The box provides: MP3 playing, FM, AUX INPUT and works on 12 V.
- Had to use a voltage reg: a 7812 and 7805 for the 12v to the amp and 5v to the MP3 player.
- Picture 1 is the almost finished amp and Pic 2 is from an earlier stage.
- Total cost of amp+player around 500-600 Rs.
Hey Mr. Aj this was a brilliant idea and is definitely a good solution for my Maruthi car where i dint have audio source.
ReplyDeleteCan you give me any more idea about procuring the parts from the market.
Where can i get the main music machine which is AX2008 from India.
Hi Avinash,
ReplyDeleteThanks. I bought all these on SP Road, Bangalore, should be available in other parts of India, wherever there is an electronics market place. As I said, you get the MP3 player there too, only thing needed is some basic electronics skill, and you can make it yourself.
Thanks
Aj
yeah Mr Aj i was able to trace everything except the AX2008 which was mentioned. Can you give me a name of the shop in which i can get it.. As i tried it at so many places , but bitter luck ..
ReplyDeleteso if you can give me a name of the shop i will be pleased..
thank you for replying Mr Aj
Mr Aj eh ? :) Basically this is the "guts" of any car mp3 player. There are many manufacturers: AX just happens to be one of them. Just ask for a mp3 player kit. Comes in a plastic box with USB, SD, etc. One of the shops that sells it is on the left turn after Kothari electronics (assuming Kothari is on ur right while walking down SP Road). Good luck with your project. In case you want a ready made one, you can come by my place :)
ReplyDeleteTx
Aj
Thank you very much...
ReplyDelete