JL Audio M770-CCS-SG-TB Owner's Manual

6 JL 

AUDIO 

1)  Choose a flat mounting surface.

2)  Drill a 1/4-inch (6 mm) diameter hole at the 

center of your desired mounting location (to 

pass the tweeter wires). To prevent cracking, 

start with a smaller drill bit and gradually work 

up the target diameter. 

3)  Place the surface mount cup at the desired 

location and orientation. Then mark the  

three mounting screw locations with a sharp, 

pointed tool.

4)  Remove the mounting cup and drill three  

3/32-inch (2.38 mm) diameter pilot holes at the 

locations you just marked. It is also advisable 

to use a hand-driven countersink tool on each 

hole to further inhibit gel-coat cracking of 

fiberglass panels. Depending on the thickness 

of the mounting surface, it may be necessary to 

enlarge the screw holes slightly.

5)  Place the mounting cup and align it over the holes 

you just drilled. Then insert three of the supplied 
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tighten gradually with a hand screwdriver until the 

cup is tight against the surface.

6)  Insert the tweeter wires through the center  

hole and then snap the tweeter into place by 

pushing in firmly.

7)  Connect the tweeter wires to the tweeter 

output terminals on the crossover. See Wiring 

Diagram on page 4.

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established, run speaker cables from the amplifier 

outputs to the mounting locations. If you are 

running cables through bulkheads, drill holes for 

the cable and use a urethane or plastic grommet to 

protect the wire from chafing in the hole. Make sure 

that the cables will clear any mechanical devices 

in the boat and secure them with wire ties.  If you 

are unsure about any part of this process, please 
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1)  Choose a flat mounting surface that has 

sufficient depth to accept the mounting cup.

2) Cut a 1.875-inch (48 mm) diameter hole.

3)  Preassemble the spring clip and mounting cup 

as shown in Diagram A, using the supplied 

machine screw 

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Models). Do not tighten fully.

4)  Insert the cup into the mounting hole so that  

the spring clip expands on the inside of the 

mounting surface. 

5)  While holding the tweeter cup in the desired 

orientation, tighten the machine screw (with a 

hand screwdriver) until the cup is tight in the hole.

6)  Insert the tweeter wires through one of the 

slots in the cup and then snap the tweeter into 

place by pushing in firmly.

7)  Connect the tweeter wires to the tweeter 

output terminals on the crossover. See Wiring 

Diagram on page 5.