Introduction: Cardboard Mini Speaker System
It is a self powered mini speaker system made with packaging cardboard. The bcardboard thickness was 6 mm and with proper pasting and ribs, i got a rigid mini box. Due to high damping property of packaging cardboard, i got a good quality sound output.
Basically i made this in 2006 for my SE k750i phone, even today it is working nicely. It gives a warm tube-like sound with emphasis on vocals and satisfactory high tones.
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12 Comments
10 years ago on Introduction
is that the tda2822m ic?
Reply 10 years ago on Introduction
ya. thats a TDA2822m running on 9V
Reply 10 years ago on Introduction
i have one on a bread board going into 5w 4ohm stereo speakers running of 5 volt usb load enogth with out been to load
Reply 10 years ago on Introduction
Good. How about sharing that. Later i also made a 5.1 home theater system. -http://diygainclone.blogspot.com/2011/09/lm4780-based-diy-51-home-theather.html
Reply 10 years ago on Introduction
still on a breadboard ill try and take a photo the idea was to make a 5.1 system for my pc just never got round to it the spekers will be full range speakers so they be no need to have a sub 1 watt each speaker i think be more then enogth volume
Reply 10 years ago on Introduction
after all the parts come out of a 5.1 speaker set for the pc but they was a problem with it it was not a dolby amp but yet when i connected the front speaker inputs sound came out of all the spaekers
Reply 10 years ago on Introduction
Well, if u plan for 5.1 DIY style, i will recommend TDA1554Q. its a super simple 4*20W channel amplifier chip with minimal parts. just get 2 chips and u can make amplifier for 5 satellite speakers + 1 sub in BTL mode.
Reply 10 years ago on Introduction
here is the photo of the stereo amp tda2822m the 4 greenish resisters add up to 10k on the input lead i put 100k this limits the amp from overloading and distorting
Reply 10 years ago on Introduction
ignore that comment i just scene them hideing under the caps
Reply 10 years ago on Introduction
dose it work fine with out the resisters and the ceramic capaciters
10 years ago on Introduction
How do you open it non-destructively if there is a problem inside that needs to be serviced? How are the speakers held in anyways?
Reminds me of something I did when I was in school with a paper bag that we named the musical bag. This is more elaborate than that was though. But my musical bag was easy access to internal components.
Reply 10 years ago on Introduction
Actually there is not a way to open it non-destructively. I didn't planned it that time. its a closed system. hopefully till now there is not a problem.
Speakers are screwed to a thick cardboard frame and the frame is again pasted to the main body. So i got a rigid speaker holding.