Akai MPC 2500 Operator's Manual Addendum page 7

To add a pad to a group, do the following:
1. Press a pad. For an example, press [PAD 1]
The mute group selection for [PAD 1] is selected.
2. Change the selection from OFF to 1.
3. Press another pad. For example, press [PAD 2]
The mute group selection for [PAD 2] is selected.
4. Change the selection from OFF to 1.
Now, press [F1] (MUTE) to return to the MUTE page. Play [PAD 1], and notice that
now [PAD 2] mutes along with [PAD 1]. Up to 16 different mute groups can be
created.
Note: when a pad is pressed while holding SHIFT key, the track mute status of only
the pressed pad is changed, and mute group settings are ignored.
MPC 2500 Manual Addendum v1.1
6