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.
This is the distance from the side of one stud to the same side of the next stud (e.g. from the left siâ¦de across the existing stud to the placement of the next one.) The actual void between studs is a little less (14 1/2). This is so sheetrock/plywood falls evenly on the wall.