Hace unos días, durante mis paseos en bicicleta, encontré tirado en la basura uno de esos rotores centrales de lavarropas, parecido al que había usado en aquella época, y aunque en la actualidad no necesito un megáfono, lo recogí y lo traje a casa, al solo efecto de hacer este instructable. Espero que a alguno de los lectores le resultará útil.
About 20 years ago I was in charge for a time the young men of the Church. Common was that we had sports or outdoor recreation. For those cases, I made a passive megaphone, ie without electronic amplification, those that were used for centuries to direct the voice forward, minimizing the dispersion, which in practice is almost equivalent to an amplification, and it is really effective.
A few days ago, during my bike rides, I found thrown in the trash one of these washing machine agitators, like that I used at that time, and although now I don't need a megaphone, I picked it up and brought it home to the only effect of making this instructable. I hope that some readers will find it useful.