Is your question is it powered or does it need an external amplifier ??
It needs an amplifier!!
I ran a JL Audio 600/1 was perfect for this unit.
It sounds wayyy better than any other sub i have heard in the ford focus.
Installing this unit is not a big project, and it installs super secure!!
Let me know if you have any other questions.
Sent from my SPH-L710 using FF Mobile
02 CD Silver SVTF
Euro Wheels, AEM CAI,
15% Tint, Clear Corners, KW Coilovers,STs,
Mach Hids, Euro grill, FS SCT Tune,