will the In Phase USW 10 fit under the seat? and whitch one ? i have the Pioneer DEH-S6220BS not as good as the kenwood that died but it has an app that leats you control everthing from phone. and if you have the awsome phone holder that bolts on the right side of the dash with the switch adatpter that he sells to use all the side dash controls it fantast you should get i think he is going out of bussnes soon. i picked up a Sony XM-S400D that i amd going to mount unger seat its very small 400w i found velcrow that i can use to stick it to the carpet under the seat i dont want to cut or drill any holes.
so that said will the subwoofer fit under the seat ?

 

Modifry. Still in biz adter a brief pause as someone new took it over. I just bought the dash controller from them.