Wisdom Sage C150i, Owner'S Manual

9

Unpacking & Installing the C150i

Your new Wisdom Audio Sage C150i in-wall speaker is a substantial piece of 
equipment. Please exercise caution when unpacking your C150i to ensure that 
you do not strain yourself from its (perhaps unexpected) weight. 

Caution! 

Do not attempt to lift your C150i by yourself. Unpacking these 
speakers is easy for two people, but it is unwise for a single person to 
attempt doing so. 
Do not attempt to lift your C150i while bending or twisting from the 
waist. Use your legs for lifting, not your back. 
Always stand as straight as possible and keep the C150i close to your 
body to reduce strain on your back.

The loudspeaker comes “telescoping” boxes (two five-sided boxes, one of 
which fits snugly inside the other). Gently roll the box over so that its bottom is 
facing up. Then carefully cut the tape along the bottom of the box on all four 
sides. Roll the box over again so the bottom is on the floor, and lift off the top. 
With one person at each end, carefully lift the speaker components out of the 
box and lay them on a soft surface (carpet or similar). 

There are three major pieces involved in a single C150i loudspeaker:

•  the Uni-Grip™ in-wall mounting systems (three included)
•  the high operating pressure bass modules (two included)
•  the planar magnetic midrange/treble module (one included)

Note that the Uni-Grip™ frames for the C150i are not interchangeable, due 
to differences in the pattern of threaded holes used to attach the planar and 
woofer speaker modules to the frame of each Uni-Grip™. Pay close attention to 
the labeling on each, which indicates “Planar Section, Top” or “Woofer Section, 
Top” respectively.

The planar magnetic section of the C150i must be mounted between the woofer 
sections. In addition, the three sections must be within approximately 5” of each 
other and should typically flank either side of a stud. 

Because of the magnitude of the bass energy of which the C150i is capable, it is 
strongly recommended that the walls into which the C150i is installed are rein-
forced and as strong as feasible. 

In new construction or remodeling applications, we recommend framing in ded-
icated spaces that are between 10-11 inches wide for the woofer sections, just 
slightly wider than the 9.52 inches required by the Uni-Grip™ frame. If the wall 
is going to be skim-coated with plaster after construction, consider using 

3

⁄

4

-

inch MDO plywood or MDF for the wall for superior strength. (This approach is 
advantageous for the woofer sections; the reaction mass of the planar section is 
extremely low, and does not require this level of reinforcement.)

1.  Determine the area for the speaker installation and locate the 

cutout guide using push pins to secure it in place. Ensure that the 
template is plumb using a bubble level or similar. Note: Make cer-