Hello, I use the xtr 400 x2 for 2 good year, and frankly has nothing to say SatLite by passing the gun a little to the left when you walk up the volume for the subwoofer, the vibration has bad asser a high volume but its asser easy to adjust the sound is clean and INFA mmmmmmhhh, there is very little time bursting j have a pro 15LF kkappa eminence, which was in a toboguan, and I have therefore change bowl, and many a 250w in a gemini toboguan (because as said above a 250W c) c something crazy, the bass and below the developer more than 15x in a box of home, of course j chains have my box, but the new edit box the gemini will host my 600w rms Eminence, I wished the news when it will hold will ring after repair, so ja i say one thing for xtr 400, buy a zen 2 see it worth a serious blow to the price at which they are , c a very very good deal. (I used them in sound and int.maintenan I ext is the Turbosound. LOL