SFX 6 has standard keyboard and mouse wheel shortcuts for changing and entering volume levels. These standards are maintained through out the entire application, so you can use them any place where you enter volume levels from within SFX.
The mouse scroll wheel acts a physical slider for any volume control that is selected and active. Simply using the scroll wheel allows you to change a volume level in 1 db steps. If you hold down ctrl and use your scroll wheel at the same time the volume changes in 3 db steps. This allows you to have a course level adjustment for quickly making drastic volume changes or making very fine level adjustments.
You can also enter levels by simply typing in a number on your computer keyboard. SFX will always assume you want a negative value, although SFX does allow for 5 db of signal boost at each volume control point. So for example if you select a volume control point and simply type 10 and hit enter, SFX will change that level to -10 db. If you type 20 and enter, it will change it to -20 db. Type in +3 and enter and it will set the level to +3db.
SFX also allows you to make relative changes to the volume levels by typing in the plus sign twice and hitting enter. This will bump the level up in all selected volume control points by 3 db. You can drop the level 3 db in a similar fashion by typing in the minus sign twice and hitting enter. For an even greater amount of control you can type ++ or -- and then enter a number and hit enter. This will bump the level up or down by the numerical value you type in. For example if I type ++10 and hit enter, all the selected volume change points will be brought up 10 db from whatever their current value is. This is very handy when you might want to bump up or down several volume points at one time, but all those volume points are not set at equal values. You can select multiple volume control points and then bring them up or down proportional to their existing balance.
In addition the Home key will automatically set any selected volume control points to the Default Volume Level. (See Also: Setting Default Volume Levels). The End key will set any selected volume control points to -160db. The Page Up and Page Down keys will allow you to make adjustments to any selected volume control points in 10db increments. So pressing Page Up will increase any selected volume control points by 10 db, while pressing Page Down will decrease them by 10db.