Hello
I have in my freelander standard audio system with 6 speakers probably

i want to add a OEM subwoofer



what i must buy ?
-subwoofer and amp ?

the wiring are in the car ??
please help #bvrgarage

Ok, simple answer is very, very difficult.
The other systems use a fibre optic (MOST) To connect audio modules together, ie head unit, amp, Bluetooth, DAB etc.
The basic system doesn't have this so unless you are going to buy all the bits - head unit, amp etc you would then need to connect them with fibre optic cabling and most probably different wiring.
Big job I'm afraid.
To be 100% sure have a look behind your head unit to see if you can see any cabling like this, it's orange and it's the MOST fibre optic, if you have this you able to proceed.

 MY15
Tyre Pressure Monitoring System (TPMS)
Surround Camera System
InControl Apps soon to be replaced with CarPlay (WIP)
Meridian Premium Surround Sound
Digital Audio Broadcast
Timed Climate
Cruise ECO Data
Follow Me Home Reverse
Extra Features Menu
Picture In Motion
4x4i screen (WIP)
Digital Broadcast TV
Meridian Rear Media with WIFI
Factory Powered Tailgate
Blind Spot Monitoring (BSM)
Reverse Cross Traffic Alert (RCTA)
Electrochromatic Wing Mirrors (WIP)

Ehh
Ok thanks for your anwser

I think that mod are very difficult and i want is true  #bvrgarage

There is actually a totally different head unit used for the base audio system, so any kind of retrofitting the factory system would require changing the head unit, adding wiring, then sub and amp. A very big job indeed.

So to make it economically, you could use the factory subwoofer assembly, but then i'd look at a small aftermarket amp to run it. A car stereo shop would be able to do this fairly easily. 2008 Freelander 2 HSE Si6 Black/Black - Hers
2009 Jaguar XKR 4.2 S/C Portfolio
2005 Jaguar XJR 4.2 S/C Black/Cranberry
2005 Jaguar X-Type 3.0L AWD - Gone