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Discussion Starter #1
I have a 2006 M3 Coupe that came from the factory with standard (non-HK) stereo system. However, the previous owner installed an aftermarket system, which I believe is good quality, but not all the pieces are there.
My objectives are to:
1. Complete the system and get good sound (Currently, no sub + weak amp = no bass AT ALL. Although the highs are crisp and clear. There is an occasional whine from the speakers.)
2. Clean-up the original install
3. Prepare for a plug and play install of a Dynavin unit

Disclaimer/notes: I am not an audiophile and audio is the very last place I look to spend money. A quality clean-sounding 4-speaker stereo system meets my needs. Also, I have never installed an audio system, but I'm more than willing to learn.

Here's what is in my car:
Headunit: Eclipse CD3200
Speakers: Diamond Audio HEX up
Speaker setup
Front door:
2x Diamond Audio S.0 silk dome tweeters
2x Diamond Audio S6.0m midrange (4 Ohm) 6" speakers
Rear side panels: NONE
Rear shelf:
4x Diamond Audio S6.0m midrange (4 Ohm) 6" speakers, 2x Diamond Audio S.0 tweeters and a hole in the middle where an aftermarket sub used to be mounted from the trunk

The entire system is installed in the spare tire wheel well and contains the following:
Amp: Boss CX350 4ch Chaos Exxtreme (400W)
Crossovers: 2x Diamond Audio HEX Series S6.0x (driving front speakers and RAF in the inside pair of the rear shelf speakers)
2x Diamond Audio M6 Series M66.1x (driving the rear outside pair of mids and the pair of rear tweeters)

Objective #1:
The previous owner recommended to replace the Boss amp with a good quality amp in order to get some bass back into those midrange speakers even without a sub. So, I bought the following replacement from my local classifieds: Pioneer GM-D9500F.
Keep in mind that I am not looking for thumping bass here. Currently, there is NO bass at all coming from the speakers even after tweaking the settings on the headunit.
Would this amp do the trick given all the existing hardware I have in the car now? I would like to avoid buying a sub and mount it in that existing hole in the rear shelf.

Objective #2:
If possible, I would like get rid of that mess in the trunk completely! Can the above amp run the Diamond Audio speakers without the separate crossovers? I am hoping I could somehow mount it in the location of the factory amp behind the trunk panels on the driver's side.
Also, I would like get rid of the rear shelf setup (4x midrange, 2x tweeters) altogether and replace it with a clean unmodified factory shelf and only keep the two midrange speakers in the factory locations.

Objective #3:
I pulled the Eclipse headunit and found that there are RCA connectors running from it to the amp in the trunk. Unfortunately, 3 wires were cut from the factory harness that lead to pins #5, #18, #9. I believe all of those are used to power the headunit. So, I would need to reconnect those to use the factory connector harness for the Dynavin even if I'll use the RCA connectors from Dynavin to the amp?

Ideally, I would like to accomplish all of the above all at once:
Replace Eclipse headunit with Dynavin
Replace rear shelf with a stock shelf and keep only 2 rear midrange speakers
Remove old amp and crossover setup
Install the Pioneer amp and use it to power the remaining 6-speaker setup (2x front teweeters, 2x front midrange, 2x rear midrange)

Can such a 6-speaker system sound good with the Pioneer amp?

Sorry for the long post.
Thank you for any and all advice!

Here are the pictures of what I have:



 

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A new amp isnt going to change the amount of bass you get. The crossover determines that along with the physical parameters of the speaker. The head unit is junk as is the amp. I would see if you could relocate thatess of crossovers behind the sides or build a false back and perhaps add an Infi ity Basslink sub. That would at least give you some of your trunk back.

Edit: I see where that stuff is now. Just clean up the install and get a decent headunit, amp and sub and you should be great. But you need the crossovers to separate the signal. When I get home I'll give you a more detailed answer.
 

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Discussion Starter #3
A new amp isnt going to change the amount of bass you get. The crossover determines that along with the physical parameters of the speaker. The head unit is junk as is the amp. I would see if you could relocate thatess of crossovers behind the sides or build a false back and perhaps add an Infi ity Basslink sub. That would at least give you some of your trunk back.

Edit: I see where that stuff is now. Just clean up the install and get a decent headunit, amp and sub and you should be great. But you need the crossovers to separate the signal. When I get home I'll give you a more detailed answer.
Thank you! I appreciate the input.
Do I understand the Pioneer amp specs correctly when I think that it has built-in crossovers? If yes, can I just use the amp and get rid of the all of those separate crossovers in the trunk?
I understand that this Diamond Audio system is set up to use the rear speakers for RAF (rear acoustic fill). Apparently, that's something that DA came up with back in the day.
I'd prefer to go without a sub, but if it can be mounted discreetly under a stock rear shelf (one without a hole in it) from the trunk where the removed sub was and powered by the same amp, I'd be happy.

Thanks again.
 
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