oh.. no i dont even have a jbl amp i just heard from some people on this board before that they get hot at 1 ohm.. i think any amp working at 1 ohm will get hot with enough play time.. My amp is running at 1.3 ohms and its supposed to not run below 2 and it runs just fine... but then again i havent played my music for hours straight... Doing that will make any amp start getting hot just about