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 dimensional boards, precut for framing walls. An 8-foot stud is 92 and 5/8 inches long, which is more than 3 inches short of 8 feet, but the standard interior wall also consists of a floor plate, which is 1 Â½ inches high, and two ceiling plates that add an additional 3 inches to the wall height.