Simplest loud amplifier for speaker?

Hello,

i can't use simple buzzer in this case, but i'm wondering how to amplify this speaker:

https://www.buerklin.com/en/miniature-panel-mount-speakers/p/38m404

with as simple circuit as possible and to get as loud as possible sound???

Right now i placed some transistor, but it only increases 20-30%.. It's very quiet..

pls. help..

p.s. i'm using arduino as a source this way http://playground.arduino.cc/Code/PCMAudio

Try "Arduino class-D amplifier" or "PAM8403" or "PAM8302" on ebay.
Leo..

The simplest speaker to use with Arduino is an amplified computer or iPod speaker. You can find battery or USB powered examples.

You could try the enclosed - it’ll put a few hundred mW into an 8-ohm speaker…

regards

Allan

amp.pdf (19.6 KB)

nardev:
i can't use simple buzzer in this case, but i'm wondering how to amplify this speaker:

Put it in a bad science-fiction movie and crank up the reactor power to the matter transducer?

Its the signal that gets amplified, the speaker is "driven".

:confused: :confused: :confused: :confused:

have nothing else to say…

i had those transistors… it was ok that way… thnx to @allanhurst

and others :smiley:

The simplest way to achieve what you require is to use a PAM8403 module. It is easy to use and provides a decent wattage of 3W.