Hung Nguyen

I just bought a Canon 814 XL-S and noticed that even when I change the filming speed, from 9 to 16 to 24, it the motor sounds the same for all settings. I do not have film loaded. But when I press the SM button, the motor does crank much faster. Has anyone experienced anything like this? Am I on an incorrect setting? Would appreciate any advice anyone has for me. Thank you in advance.