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 stereo ? bluetooth speaker kit
 stereo ? bluetooth speaker kit
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Old 15th September 2020, 09:18 PM   #1
Soldermizer is online now Soldermizer  United States
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Default $14 stereo ? bluetooth speaker kit

Here's perhaps the cheapest speaker kit you can buy Not bad for $14.10 delivered. Technically a full range speaker.



DIY bluetooth speaker material package Physical science experiment School Educational Toys for Children| | - AliExpress
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Old 16th September 2020, 12:22 AM   #2
Richard Ellis is offline Richard Ellis  Argentina
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If it actually works & plays music, sounds good to me! The amp-chip I'd guess is a TDA 2822, an all purpose amp-chip that runs on a wide variety of voltages. These are made by the bazzilions in the likes of cheap portable stereos, those mini white towers for your PC computers...& thousands of other applications. Because of the horrendous inefficiencies of those tiny two-inch drivers, they really come onto their own driving full-size home speakers.







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Old 16th September 2020, 02:44 AM   #3
xrk971 is offline xrk971  United States
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 stereo ? bluetooth speaker kit
This is cool too.
Transparent Speaker Box LM386 Amplifier Kit With Case PC Speaker DIY KIT|kit socket|kit tabletkit transmission - AliExpress
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Old 18th September 2020, 12:45 AM   #4
Soldermizer is online now Soldermizer  United States
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Yes, it's amazing the sound quality that comes out of these cheap chip amps. I've retired a DIY version of one, several years old, I think it was $12, that technically still works but one channel cuts out (pigtail). For about the same price as a pigtail, ok a bit more, why not just buy a $20 or $30 unit that will replace it and not look the horror of the old one: old PC power supply, loose board, maze of wiring and connectors, the "box" is a repurposed plastic fruit box

Even the smallest can drive "regular" hi-fi speakers to good, not to say ear-splitting, levels.
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