I note
here that the speakers are 4 ohms, not 6, and have a rated sensitivity of 85db/2.83V/1m. That is only 82db/1W/1m, which is quite low.
Also, the manual indicates that the long-term power handling capability of the speakers is 170W. I wouldn't run them at close to the maximum volume control setting for very long, if at all.
According to my calculations, with a 170 watt input and at a 10 foot listening distance the two speakers would produce a sound pressure level of about 97.6db, neglecting room effects. Loud, but not probably not ear-bleeding, depending on the music.
Regards,
-- Al