Passive Amplifier




About: Broken devices always have several useful parts,recovering them , we reduce trash ,then we are taking care of the planet

Simple and easy to do using an empty ambient deodorant,increases the sound more than 20 decibels without battery nor wires

Step 1: Materials and Tools to Make It

A deodorant tin can can,not the aluminum one,and to cover it some kind of adhesive sheet,like this ( carbon fiber),or simply paint it

Step 2: Preparing the Can

Take off the upper part part of the can,with the help of a plier or screwdriver

Step 3: Getting the Components of the Amplifier

With a handsaw or a angle grinder Cut both sides of the can,the upper one will be the base and the lower one will be a sound reflector

Step 4: Prepparing the Components

Bend a little bit the bottom side,in order to let us introduce in the can,and with the help of a hammer bend the upper side as seen on picture,this will make a better seat of the can on the base
Also we have to mark a rectangule according to the size of our cell to let us put it in,make the little window some mm bigger so the cell enters freely

Step 5: Finishing the Job

And after soldering the base and the sound reflector in the inside,I covered It with fiber carbon sheet ,It is a really efficient amplifier,It amplifies enought the sound of the cell

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    2 Discussions


    2 years ago

    (late getting to view this). I could use this! I am probably going to attempt making one for myself. Thanks for the idea! One question: Does the reflector have to be soldered together with the can? If I just sit the two pieces together, will the amplification still be present? Thanks for your reply.

    1 reply

    Reply 2 years ago

    Hi YourMagesty,sorry y I didn't specified that but the relector you have to bend it a little bit (just by hand) and solder it to the tube,two points would be enough.
    I found that this reflector amplifies better being closer to the speaker.
    Hope this is useful for you BR