Rico,

You have opened a real can of worms here, isn't your real job repairing washing machines, perhaps you should trying singing with the backing of a few out of balance Bosh machines in high speed spin mode, put a different load in each should give you a reasonable frequency range, BTW don't use the new direct drive machine they are much too smooth and quiet in spin mode. We have one and I tried it, it don't work.

Whatever turns you on Rico is OK be me, I'm not a purist, I own an arranger, a purist would play a Mouth Organ (harmonica)and sing at the same time...