The sub box and amp rack have been built, and now it's time for Andrew to add the lifting mechanism to the rack. He'll install a linear actuator that will, at the whim of the driver, lift the rack up out of its home in the trunk. Materials and tools used in this phase of the project:
circular saw
jigsaw
chisel
drill and drill bits
medium-density fiberboard
wood glue
brad nailer
Sub Box: Installing the Linear ActuatorTo add the actuator, Andrew begins by cutting out the center of the box.
- First Andrew measures and marks a section that's wide enough on top to accommodate the actuator, and continues to mark the cut lines down the front of the box (figure V).
- Andrew uses a circular saw to make straight cuts across the top of the box (figure W).
- He then uses a jigsaw to continue the cuts down the front of the box without cutting into the bottom (figure X).
- After all cuts are made, Andrew uses a chisel to break the center section loose (figure Y) and pulls the section out (figure Z).
- Now there are two sub-chambers instead of one, and Andrew will need to seal them back up using blocks of MDF cut to size.
- After the channel is cut out, Andrew mounts the actuator bracket at the back of the box.
- With the assembly complet, he takes the setup back to the car for a test fit.
- Andrew drills a couple of speaker wire holes in some small pieces of medium-density fiberboard.
- Andrew attaches them to the box using wood glue. For extra assurance, he locks them in with brad nails on all four sides.