PRS Double Acting Truss Rod
For setup specifications and information on setting your neck relief, visit the following link: Adjusting Neck Relief – PRS Guitars
In 1992, about halfway through the production year, PRS began producing all guitars with a double acting truss rod.
Conventional truss rods can only compensate for forward neck bow. Due to varied climates and other conditions to which your PRS guitar may be exposed during its lifetime, your guitar’s neck may bow either forward or backwards. The PRS double acting truss rod can provide neck adjustment in both directions, accounting for bow in either direction.
The PRS double acting truss rod achieves twice the amount of adjustment as the single acting rod with the same amount of movement of the adjusting nut. Do not over-adjust!
Identification
If your PRS was manufactured in 1992, you can determine the type of truss rod your guitar has by examining the adjusting nut. The original PRS single acting rods used a brass adjusting nut threaded onto a steel rod. The modern PRS double acting rods use a steel nut fused to a steel rod.