Speaker?

Hi can someone help me with making of my speaker. Two months ago I ordered this amplifier and bluetooth module (http://www.ebay.com/itm/131695054275?_trksid=p2055... ; http://www.ebay.com/itm/400994683240?_trksid=p2055... )

I have a battery with 3.7 v and then I ordered step up converter (http://www.ebay.co.uk/itm/MT3608-2A-DC-DC-Voltage-... ). The speakers are this 20w ones (http://www.ebay.com/itm/152230288064?_trksid=p2055... ). When I tried to play something atr low volume it was playing it very well but when I tried bigger volume it started interrupting a lot so you could not hear the song. Then I ordered new amplifier (http://www.ebay.co.uk/itm/252428143559?_trksid=p20... ) which has the same problem. Can somebody help me please???

Thanks for all answers, Enej


VitorT3 months ago
Hello. I didn't see your circuit so I'm just guessing here. I think your problem is that you have a 20W speaker that draws a lot of current and uses a step up DC-DC converter that handles a maximum of 2Amps. So the power rating of your load is not the same of your power supply ( battery with the DC-DC converter).