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Are solar panels that efficient now or what am I missing?
I've got a 15W suitcase style solar panel that plugs into it, not shown here.

The design is a mod of the "Boominator" design created by a guy in Denmark. Uses piezo tweeters and efficient PA speakers and achieves about 95dB SPL/1w efficiency, so you don't need much drive power for loudness.

It's run by a circuit board that integrates a class D amp, MPPT solar battery charger, 5V/3A output for charging phones/tablets, low battery protection and other goodies. Has less than a quarter watt of quiescent power when it's running, and with the 15aH battery in it it'll run for a couple days continuously with no sun at reasonable listening levels.

With the solar panel plugged in, it charges through the day and runs overnight, so it'll pretty much run 24/7.
 
I've got a 15W suitcase style solar panel that plugs into it, not shown here.

The design is a mod of the "Boominator" design created by a guy in Denmark. Uses piezo tweeters and efficient PA speakers and achieves about 95dB SPL/1w efficiency, so you don't need much drive power for loudness.

It's run by a circuit board that integrates a class D amp, MPPT solar battery charger, 5V/3A output for charging phones/tablets, low battery protection and other goodies. Has less than a quarter watt of quiescent power when it's running, and with the 15aH battery in it it'll run for a couple days continuously with no sun at reasonable listening levels.

With the solar panel plugged in, it charges through the day and runs overnight, so it'll pretty much run 24/7.
That is awesome
 
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I've got a 15W suitcase style solar panel that plugs into it, not shown here.

The design is a mod of the "Boominator" design created by a guy in Denmark. Uses piezo tweeters and efficient PA speakers and achieves about 95dB SPL/1w efficiency, so you don't need much drive power for loudness.

It's run by a circuit board that integrates a class D amp, MPPT solar battery charger, 5V/3A output for charging phones/tablets, low battery protection and other goodies. Has less than a quarter watt of quiescent power when it's running, and with the 15aH battery in it it'll run for a couple days continuously with no sun at reasonable listening levels.

With the solar panel plugged in, it charges through the day and runs overnight, so it'll pretty much run 24/7.
Sounds like it will have very low compression and distortion, nice :)
 
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