I need help with the audio in my 2000 S40

[JohnBauder]

I just bought a 2000 S40 and have ordered a Sony CDX-GT440U CD receiver for it. I found all the information I need to install it. Now I am thinking about the speakers. Was there a standard and a premium audio package offered in 2000 and how can I tell what I have?

It sounds to me like most of my sound is coming from the dash and the rears. The rear speakers are nothing special. Can you help me decide what speakers might be a good upgrade without spending too much (the Sony is not high end)? Crutchfield has recommended Sony Xplod 5 1/4" 2ways for front door and rear deck. After I got a tech on the phone I was told the dash has a pair of 3 1/2 inch speakers but Crutchfield has nothing to fit. The tech recommended I make a mounting board and use Pioneer 7/8" tweeters. I like bright (but not tinny) highs so tweeters might be OK.

I have seen messages online that indicate there are speakers in each of the four doors plus 2 in the dash and 2 in the rear deck. That would be a lot of speakers - is that accurate? Is there a drawing or schematic available that shows the speaker locations?

Please add comments about any problems I might run into that I don't know enough to have asked about.