Well you are going to need subs an amp it depends on how big your sub and amp are going to be but you might need a new alternator a amp wiring kit also depends on how big you go if its over a 1000 watts you will need like 5 gage of 4 gage power wire it should tell you on the box a drill maybe to drill through you firewall if you don't hare a big enough hole that about it i think oh and a box for your sub
When screwing in the sub to the sub box don't forget to pre-drill all the holes before you put in the screws. If you don't it may crack and screw up you mdf.
balls
not 100% certain but i dont know of any stereo's that you cant add a subwoofer too you will however need a power amp to drive the sub.
you ohm load is too low. raise the ohm load or buy an amp that is stable at the ohm level of the sub.
You need to drill the bulk head on the ford focus ! vistit http://ukmodifiednetwork.co.uk for more info
Run a 2 sub per amp set-up. Get a distribution block for you power wire to split the power wire. You can run the remote wire from your stereo to one amp and then from the amp to the other amp. you will also need 2 sets of RCA's Easy way is too get a 4 channel amp to power 4 subs.
Connect speaker cables to your receiver. Note that the subwoofer in this system is not powered, so you will need an amp that can power the subwoofer too.
yeah but ur gone need a power amp too
Yes, but the amp is too powerful and if turned up to full volume will blow the speakers.
on my 1.8 gti there was a rubber grommet on the passenger side just under the coolant bottle in the firewall.
there is usally a (blue remote wire you wire you have too hook up too turn on the factory amp)it gets hooked up too the power antenna wire.......
A 2 channel 900w per channel amp or less will run it, or a 1800w one channel amp etc.. Keep in mind the ohms need to match up too
If it was preinstalled, it may have been adequate at the time of installation. It depends on the power requirements of the home. If this is a new install, the NEC has a minimum of 100A for service equipment. To be honest, I would install 200A minimum to allow for future expansion.