Do you mean this kind of Bass Tube?
If so, I had it professionally installed, but they added a Clarion AMP under the front drivers seat then ran the wires along the door edges and into the rear side copartment with a quick disconnect so I could take it out if need be. The AMP wires forward along the door edge out to the engine compartment and into the fuse box...out of the box, back thru the firewall to the radio.