MartinLogan 20 - Manual (Page 5)

1 Using a stud finder, locate the final speaker position
between ceiling joists.
WARNING! Absolutely no part of the template
should overlap a joist.
2 Insert a push pin in the template center.
3 Mark cutout through slots in template. Remove Template.
4 Use a dry wall knife/saw to cut out the opening.
Figure 11 . Installation step 4.
Ceiling
Joist
Ceiling
Joist
Figure 10 . Installation steps 1–3.
Installation