"Amps". There are amplifiers in each door, and one in the boot for the sub / subs.
You'll need cross overs for each door as well, three way for the fronts, and more likely than not three ways for each rear door as well - only because nobody seems to do a "Mid / Bass" crossover without it being three way.
Then you'll need an amp for the sub(s) in the boot, and an adaptor so you can use both radio aerials with the Alpine - one tends not to be enough to get a reliable signal.
Have fun.
not quite so mate last year i changed my original head unit for a more upto date sony head unit and auto changer , i got an adaptor lead of a company who advertised on ebay cosy £29.00 and i used just one aerial lead and its always worked a treat ive never had a problem recieving any station .
rick.
Try this link - need MS excel to view but this contains wiring diagrams, pictures and all that I needed to do my install
http://jimsrover.afraid.org/rover/paul.adshead.Sony.RangeRover.Wiring.Adaptor.xls
Cheers
There seems to be a broard spectrum of 'things that work' when connecting up and aftermarket headunit, this is becuase it normally depends on what is already fitted in to you motor. I have a 95 HSE that had the stock clarion radio and HK speaker set with amps in the doors. There is a good write up on rangerover that talks you through building an attenuator circuit that plugs between the wiring harness in the rangie and an iso compatable stereo. This was the only solution that allowed me to retain the usage of the factory amps - you could of course bypass them as suggested earlier but the attenuator method is (with a bot of soldering practice) the easiest and cheapest method (IMHO) of fitting an aftermarket stereo to a clarion/HK 95 4.6 HSE.
Try this link - need MS excel to view but this contains wiring diagrams, pictures and all that I needed to do my install
http://jimsrover.afraid.org/rover/paul.adshead.Sony.RangeRover.Wiring.Adaptor.xls
Cheers