Solutions
If the printer is too loud, enable Quiet Mode. Enabling this feature may reduce printing speed.
Windows printer driver
Enable Quiet Mode on the Main tab.
Mac OS printer driver
Select System Preferences (or System Settings) from the Apple menu > Printers & Scanners (or Print & Scan or Print & Fax), and then select the printer. Click Options & Supplies > Options (or Driver). Enable the Quiet Mode setting.