JS-4: Questions and Answers

The process of extracting the most common questions and answers about our products from hundreds of forum posts and e-mail exchanges has begun.  Some of those will get posted on these Q & A pages.  Please choose the product you are interested in reading about from the F.A.Q. drop-down menu at top.

QUESTION: I lost the instruction book that came with my JS-4.  Can you download it?

ANSWER: Sure. Here it is. JS-4 User Guide (this file is 1.2Mb).