Diamond Audio Technology M331i Owner's Manual page 11

M391i
General dimensions in millimeters and [inches]. Not to scale.
169 [6.65"]
165 [6.49"]
123
[4.84"]
163
[6.42"]
116
[4.57"]
232 [9.13"]
266 x 180 [10.47" x 7.08"]
21
[0.82"]
3
[0.11"]
77
[3.03"]
214 x 125
[8.43" x 4.92"]