Call JL and tell them you want to speak to someone about an issue with one of their dealers. Ask this person if its customary for their dealers to power up customers' speakers when there was no apparent need to do so. Include that they had not even had your enclosure built by the time they powered up the sub, so they cannot use the excuse of 'we were testing the system for problems as a means of quality control'. Include the conversation with the rep/owner(?) who, once confronted with this issue, called your business a 'favor'. Sound professional and adult, and simply tell them you know JL Audio has a sterling reputation and thought they'd want to know their local dealer is tarnishing that reputation with such poor business practices as you just described to them. Dont be confrontational with JL, just act as if you are passing along info that their local rep has bad business ethics. Ask their advice on how to rectify this situation beyond taking your now used subwoofer and going home. If you feel JL is blowing you off, you can also use legal sounding terms like you feel you have a damage claim as you no longer own a "new" speaker. Dont make it sound like you expect JL to replace the sub however, you want JL on your side, not to feel like you are out to get them. Lastly, define a goal before you call. Decide what you wish to see happen here to make you feel like justice (for lack of a better word) has been served. Be honest with JL, tell them you felt you had no other avenue to pursue other than contact their supplier, as you realize JL is a honest and reputable manufacturer, and that you hope they (JL) would work with you to resolve this issue.
Hope that helps.
