Optimus 120-1746 User Manual

Optimus 4-Inch Flush-Mount Speaker System
(120-1746) Preparation Faxback Doc. # 34216

CHOOSING A LOCATION

For the best performance, install these speakers on a solid, firm surface
that does not vibrate at high volume levels. We recommend you mount the
speakers in the door panels or the rear deck.

NOTE: Cardboard or fiber panels are not good mounting surfaces.

As you are deciding on a location, carefully inspect the area behind the
proposed mounting surface.

There must be a clear unobstructed area of at least 2 inches (50.8 mm)
behind the panel.

If it is a door location, check to be sure the window, window mechanism
and window handle will clear the speaker.

NOTE: Make sure the window opens and closes properly.

Optimus 4-Inch Flush-Mount Speaker System
(120-1746) Installation Faxback Doc. # 34217

INSTALLING THE SPEAKERS

1. Use the supplied template to mark the speaker opening and the mounting
screw hole locations.

2. Cut out the marked speaker opening in the mounting surface.

NOTE: Steel door panels and the rear deck (behind the upholstery)
might already have large cut-out areas for recessing the speaker

3. Drill the four mounting-screw holes.

CAUTION: Be careful not to drill into anything behind the mounting
surface.

4. Mount the supplied speed clips directly onto the mounting screw holes
that you drilled using the supplied template.

5. If necessary, route new speaker wire from the autosound system to the
mounting area.

CAUTIONS: Avoid routing speaker wire where it can be pinched or
stepped on. You can usually route it along the channel
beneath the vehicle's door facings.

If you selected door locations, you might need to punch a
small hole in the door edge (near the door hinges) to route
the wires into the door. Leave enough slack wire to open the
door all the way.

6. Insert the positive (+) and negative (-) stripped speaker wire ends
through the corresponding speaker terminals, wrap them around the
terminals, and either solder or crimp them in place.

CAUTIONS: Improper phasing can cause poor bass response. To ensure
proper phasing, you need to match your autosound system's
positive (+) and negative (-) speaker wires to the corres­ ponding positive (+) and negative (-) speaker terminals.

Do not connect any of your speaker terminals to chassis
ground.