Pioneer PDP-425CMX Technical Manual page 68

Tilt Mount Unit: PDK-5011
7 Fix the bottom of the hardware with the special screws
removed at step 1 (one on the left and one on the
right).
Special screw (M6)
8 Install the under speaker (PDP-S39).
1 Connect the speaker cord to the terminal on the
speaker.
2 Place the speaker installation hardware on the
speaker and using the screws that come with the
speaker, anchor both from the bottom (2 locations
on the left and right).
Note
Be sure to install the speaker with the hardware
attached vertically.
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