Rectangular speaker and soundboard

Speaker 15 x 11 x 4 mm and soundboard 15 x 11 x 5 mm.

For DC-Car DIP-8 sound modules and SOIC-8 sound modules.

To achieve higher sound with the different sound modules, you can increase the resonance space, use a larger speaker or install an amplifier circuit.

The circuit in the example scheme is suitable for all K1-5 sound modules. The advantage of this circuit is that the MOSFET amplifier doesn't collapse the DC-Car decoder voltage converter.