Speaker/Amplifier problems

[mlwms]

Hello All,
I recently purchased a 2002 X-type 3.0. I think that I am going to get to like it. Being a Beamerhead
for the past 25 years, I thought I would try a Jag.
However, the car had several problems, this is the story 2 of 2.

I have searched around the forums, you guys are sharp! Your posts have brought me almost up to speed on the
X- type in a very short time.

I’m hoping you can help me to solution this problem:

BACKGROUND: The car has a premium sound system (10 speakers - 4 tweeters, 5(?) bass and 1 subwoofer)
1.there is only output FROM the 4 tweeters in the doors
2.I have removed the factory installed radio/head unit. I found no amplifier and no apparent connection problem
3.I have looked in the boot/trunk above the CD changer and found no amplifier
4.Since all four of the door speakers are not playing, I did not remove them
5.There are two speakers mounted in the rear shelf, in an enclosure that aren’t playing.
6.I’m assuming that there’s one in front that is not playing.

Can you help identify the problem and the location of the amplifier?
Thanks in advance for your help.
Mike L.