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how do i make a portable speaker get power from a 9v battery instead of my mp3 player? Answered

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lemonie (author)2009-04-19
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Cartermarquis (author)lemonie2009-04-19

Exactly like I was going to say. However, it should be noted that this will only save you a little bit of battery power on your mp3 player(which i assume you're trying to do). The way to do this is turn the volume down low on your mp3 player and turn up the volume on your amp.

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lemonie (author)Cartermarquis2009-04-19

I think that the speaker is a heavy-load on the mp3 player and it keeps running out of charge, or the volume isn't loud enough. Unless the amp is taking a lot of current (which it shouldn't) the volume level isn't going to make a lot of difference to mp3 battery life, but I agree with your advice.

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