A speaker's wire plugs are generally red (positive) and black (negative). Red wires connect to red plugs, and black wires connect to black plugs. If a speaker's wires contain different colors, the wires should be matched to their plugs by their positive and negative symbols. Full Answer >.
Finding wall studs. Wall studs in modern homes are spaced 16 inches on center -- that is thedistance from the center of one wall stud to the center of the next is 16inches. In older homes, studs may be 24 inches apart, or spaced irregularly.
Wall studs are typically installed at 16 intervals when measured at their centers. Start at one end of a wall and mark the location of the first stud. Use a tape measure to mark out the location of the remaining studs along the wall. Using a plumb bob or laser level, transfer those locations to the top plates. Measure and cut a 2 x 4 board so that it fits snugly between the bottom and top plates. Insert the stud between the plates and make sure it is plumb. Attach to the top and bottom plates using 3 nails. Repeat for remaining studs. Measure and cut 2 x 4 boards so that they fit snugly between the wall studs.