Grumpy_Mike:
That makes no sense at all, you have used the wrong word, "temporary" means not permanent or efermal.
Ok ok, i just connected my amp and a speaker, it kills my hears! 
But it's there
Grumpy_Mike:
Have you done this?
I assume it is in the setup function. You should use a frequency of over 30KHz.
How do i do that?
Thanks for your time and support