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Hace unos 20 años tuve a mi cargo durante un tiempo a los hombres jóvenes de la Iglesia. Era común que tuviéramos actividades deportivas o recreativas al aire libre. Para esos casos, me hice un megáfono pasivo, o sea sin amplificación electrónica, sino de esos que se usaron durante siglos para dirigir la voz hacia adelante, minimizando su dispersión, lo cual en la práctica es casi equivalente a una amplificación, y resulta realmente efectivo.

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.

Step 1: Lets see that we have (veamos lo que tenemos)


Este rotor-agitador es ligeramente más complicado que el de hace 20 años: tiene un cono central que habrá que retirar. Ese será el primer paso. Para eso hay que cortar en primer lugar el extremo más delgado del rotor, a efectos de poder introducir una hoja de sierra dentro de lo que de ahora en adelante llamaré "la bocina", y así retirar ese cono central que molesta.

Una vez retirado el cono central, hay que emparejar el interior de la bocina lo mejor posible. No soy un experto en sonido, pero supongo que cualquier irregularidad en la superficie interna de la bocina influirá negativamente en el resultado final.


This agitator is slightly more complicated than 20 years ago: It has a central cone that must be removed. That will be the first step. To do this, must be cut in the first place the thinner end of the rotor, in order to introduce a saw blade in what would now call "the horn" and thus remove the annoying central cone.

After removing the central cone, you have to match the interior of the horn as much as possible. I'm not an audio expert, but I suppose that any irregularity on the inner surface of the speaker will influence negatively the final result.


Brilliant! This just gave me an idea on making a gramophone.
Casimiro, I had not thought of that. You are a very creative boy, I admire you. <br>
buenisimo, especialment para llevar a ver los partidos de futbol. <br> <br>excellent, especially to take to the soccer games.
Gracias, me alegro de que lo encuentres &uacute;til.
Brilliant!!!
Thanks!
Muy buena idea, en especial por estar reutilizando algo como el agitador de una lavadora!!!
Gracias, fado1986. Cuando uno tiene el TOC (Trastorno Obsesivo Compulsivo) autodiagnosticado de juntar cuanta cosa anda dando vueltas por ah&iacute;, se ve obligado a utilizarlas cada tanto.
Jajaja. Yo tambien tengo COT (autodiagnosticado)... y tengo gavetas y estantes llenos de &quot;chunches&quot;, pero considero que lo tengo bajo control. ;)
nice re-purpose.
Thanks, thingy!
Genial... Es una forma muy creativa y &uacute;til de reciclar, nunca hab&iacute;a visto estos conos de esta forma. felicidades.
Gracias, jstephens. &quot;La necesidad es la madre de la inventiva&quot;.
<br> Interesting techniques.<br> From a &quot;twin-tub&quot; washing machine I think.<br> <br> L<br> <br>
No, Lemonie. Here these washing machines are almost unknown. Phil B said me that the name of the part is &quot;agitator&quot;, not &quot;rotor&quot; as I wrote. Already I fixed it.
I was referring to the machine which it came <em>from</em>.<br> <br> L<br> e.g.<br> <img src="http://s1.hubimg.com/u/1408244_f260.jpg"><br>
Me too, lemonie.
Yo le hubier apuesto de titulo megafono cien porciento argento, jejej.<br> Muy buen articulo, si la queres dejar brillante proba pasandole brasso, o algun pulidor por el estilo.<br> Saludos.<br>
Hola Bruno, gracias por el comentario. Si en alg&uacute;n momento me dedico a piquetero y necesito el meg&aacute;fono, voy a seguir tu sugerencia. Por el momento, voy a seguir laburando... Un abrazo.<br><br>(Hi Bruno, thanks for the comment. If at some point I need to dedicate to piquetero and need the megaphone, I'll follow your suggestion. For now, I'll keep laburando ... A hug.
Clever and imaginative! If it helps, we usually refer to this in English as the agitator ('agitador') because its constantly reversing motion agitates the load of clothes in the washer to loosen the dirt and clean the clothes. It appears you call them a rotor in Spanish.
Thanks, Phil, I will fix it. Yes, here it is named rotor, pallet, etc. The word &quot;agitator&quot; is more associated to violent social activity. Coincidentally, a megaphone is an ideal tool for social agitators!
Osvaldo, I understood what you meant, and that is the only thing necessary. I thought you might like to know the word most often used in English, at least in the USA. I cannot speak for England and elsewhere. Sometimes terms vary there. We also use 'agitator' for violent social activity. Context is often everything for determining the intended meaning.

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