Sonny wrote on 07/06/15 at 17:46:14:If you have a guitar, keyboard or other musical instrument, 1000hz is very close to a B. 500hz is B an octave below. You can hear the B when you are at the right spot.
1000rpm is a steady, smooth, alert-sounding idle. It's well above any uneven thumpin-and-bumpin.
Idle rpm knob: yet another way to "tune" yr. engine. ;-'
Being a musician, guitar player, and S40 owner myself, I don't quite follow how 1,000 cycles per second (aka Hertz) equates to 1,000 revolutions per minute. Please elaborate.
You misread him, 1000 hz is a B, not rpm.
500 hz is an octave below, also B.