Alfa Romeo Forum banner

1 - 4 of 4 Posts

·
Registered
Joined
·
5 Posts
Discussion Starter #1
Firstly, sorry for the long post - I thought I'd give the background.

The story starts with my neighbour reversing into my car one morning about a month ago. I work offshore and had been away for a few weeks during which time she got in to the habit of using the space where I park my car to turn round in. I came home from my trip very late one night and the following morning she seems not to have noticed the presence of my car until reversing in to the rear drivers side door (several times). Anyway, she was very apologetic and we handled everything through our insurance companies.

My car was in the garage for two weeks and I picked it up a couple of days ago. Physically everything was fine and I drove of happyish. That was until I tried listening to the stereo, immediately it was obvious that it had lost the Bose "Wow" factor. I have done some poking around and checking and everything is still there but I think there is a problem with the amp and sub.

There is still sound from all the mid range speakers, but it doesn't sound as clear as originally. The sub is still working but distorting at all volumes and there is no weight there. Overall the system seems much quieter.

I am going to call the garage tomorrow, but don't really expect them to be much help. The car was sent there by the insurance company and I have no proof that they have damageed anything - I suspect it was probably some of the young lads there seeing what the system could do and eventually breaking something??????????

So, my questions are, has anyone ordered a new amp/woofer from Alfa Romeo?
Can you order them seperately?
Are there any specialists who now about these systems and won't just try selling me some after market replacement?
Or, more unlikely, does anyone know of a 159 SW (with bose) being broken at the moment?

There seems to be a lack of information about this equipment on the net, part no.s etc and I am worried about how much it will cost to get fixed. Any advice would be great.

Thanks for reading,

Steff
 

·
AO Silver Member, 155 Lounge Winner 09
Joined
·
7,713 Posts
There's a chance - if they needed to disconnect the groundwires in the area of the repairs - that the amp is not grounded properly. Hopefully that's all it is, but that could cause your problems. If the BOSE amp groundwire is not reconnected, the amp will try and ground via alternative routes, which exist through other wires like back to the headunit, etc. But this won't handle the power, and the amp won't function properly, resulting in markedly reduced performance like you experience.

Have the garage check it out. Or pull back all the boot trims yourself to locate the amp and check the wiring. But given the repairs presumably have a guarantee, probably best to go to the garage.

:)
 

·
Registered
Joined
·
5 Posts
Discussion Starter #3
Thanks for your input shiny car.

Before I call them up I want to get a better understanding of the Bose wiring, I think I have the diagrams at home and will check them later but I wondered if it is just the amp that is grounded or are all the speakers grounded too?

The only part of the system they should have touched is the speakers in the drivers side rear door, is it possible that these could have been badly reconnected and thus cause a grounding problem or is it just a plug/socket?

Thanks
 

·
AO Silver Member, 155 Lounge Winner 09
Joined
·
7,713 Posts
The speakers are not grounded. They each have 2 wires, a POS/NEG, which return to the amplifier.

If there's no reason that the BOSE wiring in the boot would have been touched, then maybe there is a short with the speakerwires in that door.

For testing purposes, you could even disconnect the multipin/Molex plug in that door jam. Fiddly, but do-able. It will disconnect all electrics to/from that door. If the BOSE stereo works normally after that (aside from that speaker having no sound), it suggests a fault with the wiring somewhere inside the door.

:)
 
1 - 4 of 4 Posts
Top