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Old 25th June 2008, 01:07 PM   #1
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Question portable batterie powered amp (2x 2W) ???

Hi guys, I'm searching a amp to drive two 4Ohm 2W speakers.
It should be portable and i want to use AA-Batteries to power it.
The Amp should run with 6-9V!

can someone recommend a kit or has such a amp to sell?

(i also have the a Zhaolu 2.5 headphone amp here (the small cheap one), can i use this with some modifications?)
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Old 25th June 2008, 01:22 PM   #2
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Location: Maryland, USA

There are bunch of small amp kits sold, like the one above.
The output at 9V will be close to 2W, I guess.

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Old 25th June 2008, 02:25 PM   #3
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thx, that seems to be a good shop.
this amp looks perfect:
but $32-$42 shipping costs to Europe
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Old 25th June 2008, 07:12 PM   #4
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Then buy your components locally, find the TDA2005 datasheet and build on veroboard or p2p.
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Old 28th June 2008, 01:48 PM   #5
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How about this?

2W class-d amp boards
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Old 8th July 2008, 09:48 PM   #6
Tahmid is offline Tahmid  Bangladesh
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If you can make your own amplifier, you can use LM380N-18 for ~1 W power, LM380N-14 for ~2 W power. Construction is very easy as you require only a coupling capacitor and a decoupling capacitor on the Vcc pin.
The tallest building in the world starts from the first brick.
পৃথিবীর সর্বোচ্চ দালানও প্রথম ইট বসানো থেকেই তৈরি হয়েছে।
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Old 9th July 2008, 10:41 AM   #7
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Default Eutech

I have been playing with these little thingies, Eua5202

made by Eutech. the sound is good, efficincy is really high and output at 4 ohms is 2 watt. they work on 3.7 volts, so one polymer cell will do the job.

Always check the power supply... and my spelling...
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