Cheap 2*15W Amp Class T





Introduction: Cheap 2*15W Amp Class T


First i'm french so sorry for my English ...

I would present you my little T-amp based on a MKll TA2024 board. This is perfect to recycle old speaker for example. 

If you don't know anything about the class T don't waste one more second of your life and => google : T-amp ( i'm joking )
If you want the synthese this class is the best : Sound quality / price / volume compromise, that we have now.

List of material :

-1 board MKll TA2024
- 1 x Switch type 202 
- 2 x RCA Panel mount
- 1 x Power supply 12V DC 2A 2.1mm
- 1 x spring terminal for speaker
- 1 x Panel mountDC 2.1mm 
- 1 Red LED + 1 resistor 680 ohms ( optional for Power On indicator  )

Board Characteristics:

10W @ 8Ω, 10% THD+N.
15W @ 4Ω, 10% THD+N.

88% @ 10W, 8Ω.
81% @ 15W, 4Ω.

Step 1: Electric Part

Wiring diagram ( So simple that even really beginners can do it ) :

This wiring diagram is in french so this is the translation :

Alim = power supply
vue dessus = top view
Led rouge = red DEL
HP= speaker
Bornier HP = Speaker connector
Boitier= case

Step 2: Made the Case

In my case, I chose only recycled materials. A square tubular steel and plywood.
But this step is optional because it's my case and i think you want your case with your design.

My piece of steel is 74*74mm and 150mm deep. My plywood is 15mm.

the first step is to cut the steel and polish it..

The second one is to made wooden facades.

Step 3: Final Assembly and Soldering

The last step is to solder all according to the wiring diagram and assemble your box around the components.

Step 4: Enjoy the Music

Put you music, and be proud of your first little amp which has cost you less than 20 dollars :)

and again sorry for my english ! 



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    S'il vous plaît ne vous excusez pas pour votre anglais! Votre anglais est merveilleux. Juste nous pardonner pour notre très mauvais français.


    votre français est parfait ! Aucune faute, mieux que pas mal de français :)


    thanks, better than mine :)

    Isn't 10% THD on the rather high side for listening to music?


    10% is the high limit for good listening, it's why it's the max output power.

    Great project and your English is much better than my French, so don't apologize.

    Great Instructable! Can you upload a picture of the connections side of the box?


    Sorry for my poor skills in english but i'm not sure to understand your question in the right way
    you mean that you want to see external connexions, or internal wiring ?

    PS : thank you for the compliments

    I wanted to see the external connections. looks like you added a few pics, thank you. It looks great! Your project is definitely going on the wishlist in my brain.