JLD Guitar Research & Development are the inventors and manufacturers of the JLD Bridge Doctor System. These devices are the solution to one of the most common problems with acoustic guitars; bowing of the soundboard. The design and installation is simple - A mounting block is fitted under the bridge via a screw. A tension rod is then installed between the mounting block and the tail-block of the guitar. This is then tightened to counteract the pull of the strings and the warpage of the top.
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