all it all it works great. an amazing improvement from the previous setup. the old box in the trunk to the rear produced a sloppy, weak sound. now it is loud, smooth, and clean. it gets low too. gains are less than half on the T1000 (lower than it was before) and settings were all done with an oscope (fluke scopemeter). customer is extremely happy so i did my job. i have a video but it's like 40 mb and i dont' know how to host a vid. i've never done it before.