So im installing a 4 channel amp. The amp will be in the rear trunk. Would 30ft be a good estimate of the amount of wire I will need to hook up 4 speakers? Im just trying to keep my costs down to a minimum. Any help appreciated, thanks.

 

Are you hooking this amp up to 4 coaxial speakers? I'd estimate that at least a 50' spool would probably be what you will need without leaving yourself too short.

 

I have 2 coaxial mb quarts for the rear, and 2 component sets in the front speakers.

 

think of it this way u need about 2-3 feet of wire for each rear speaker depending on where u mount your amp and how u want the wire run...if u want it hidden then a bit more maby a 4-5 foot run at max? to the front doors also depends on where u run the line but no matter what its no more then 10 feet. so at most yea youve got 30 feet there but do yourself a favor and get a 50ft roll to be safe