well the 1000 watt amp is'nt pushing my 10 and 12 like nothing. my 250 watt amp pushed harder then the brand new 1000 watt amp??????????
well I have the XM-2165GTX,  And The 12" subs just do not sound right in my truck I had a special Box made just for the XS-L120P5W subwoofers And with the 1000watt amp Gain nob turned half way up it distorts really bad It kinda sounds like the Air space is wrong in the box.  Everyone I now says it sounds good, but I have installed stereos for competition, and I can here the speakers distort, Can you help me?      2nd. Question Can you tell me the Required air space for these 12" subs XS-L120P5W, I have 2 of them and it is in a sealed box For a 2000 Chevy ext. cab truck.                   Thank you for your time                                                            William Palmer