Bose plant..........?

Hello.
a few questions about the Boseanlage in the A8/Bj. 95 with Radio Delta.

Today I had the impression with sniffs and dense ears that the bass foundation would be a little weak.....but am not sure, because I can not hear normally right now because of sniffing.....

but I listened to the individual boxes, I only had a few weeks and I just got to it - and found out the following:

1. Everything seems normal in front

2. back the sound is thin - and I always thought there were tweeters up in the door, because there are at the door opener tweeter cover grid-like claddings.....are there usually some? Because if so, mine won't go.

3. However, the lower boxes at the rear sound more like widebands - normal?

4. the lower boxes at the rear have WHEN THE foundation is less than the front ones...normal?

5. The boxes in the hat rack are subs, right? At least I'm getting out of subbass - normal ?

It is read from time to time that in the V8 the boses decline or. is this the case with the A8 system? Or is there a central power amplifier, and if where? I mean, having read under the changer, but that doesn't look like that to me at first glance....but I'm not sure...

I still lacked that the Boseanlage dissolves, after I already have so much trouble with the V8 and now still urgently the carriers of the A8 have to change quite urgently....

Does this never end??

Many frustrated and sniffed greetings,
Alex