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Discussion Starter · #1 ·
My car currently has the following factory system:
BMW F10 LCI 5 series
6 speakers base system
- 2 underseat woofers
- 2 front door 4 inch speakers
- 2 rear shelf 4 inch speakers

The equipment I have bought so far:
JBL MS-8
JL Audio xd 400/4 amp
MB quart qm200.3 package
- 2 woofer that fit in the factory underseat location
- 2 midranges that fit in the factory front door location
- 2 tweeters that fit in the factory window location behind the side mirrors. I have also bought the factory grilles
- 2 crossovers for the mid/tweeter combo.
MB quart qm200 coax speakers
- 2 4inch coax speakers to replace the rear deck speakers
- 1 4inch coax to go in the factory center speaker location. I have the center oem grille.

Installation will be done by professional installers but I need to tell them what setup I want. I will do calibration probably myself. For all setups below, 4 FL+FR+RL+RR will go into MS-8. Rears will be driven by MS-8 internal amps.

Option 1 semiactive front:
- Use MS-8 internal amps for center.
- Use 2 channels of xd400 for under seats.
- use the other 2 channels for the front door speakers and use the mb quart crossovers for the tweeters in parallel with the door midranges.

Option 2 active front (drive underseats with 1 external amp channels):
- use ms-8 internal amps for center.
- use use 1 channel of ms-8 going into 2 channels of xd400 (y cable or bridge the amps?)
- use 2 channels of xd400 to drive the door midranges.
- use ms-8 internal amps for the door tweeter and use ms-8 internal crossover.

Option 3 active front (drive underseats with 2 channel of xd400 and drive center with xd400):
- use 1 channel of xd400 for center.
- use use 1 channel of ms-8 going into 2 channels of xd400 (y cable or bridge the amps?)
- use ms-8 internal amps to drive the door midranges.
- use ms-8 internal amps for the door tweeter and use ms-8 internal crossover.

Option 4 active front (drive underseats with 1 channel of xd400 and drive center with xd400:
- use 1 channel of xd400 for center.
- use use 1 channel of ms-8 going into 1 channel of xd400 and drive the pair of underseats in parallel
- use 2 channels of xd400 to drive the door midranges.
- use ms-8 internal amps for the door tweeter and use ms-8 internal crossover.

Option 1 is the simplest and it keeps getting more complicated. I want the clearest mid/high and soudstage not crazy high volume. Any thoughts on which way i should go?
 

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Discussion Starter · #3 ·
right now i am leaning towards option 1 only because I can't seem to be able to find any specks on the midrange and tweeter of mb quart qm200.3 so i really need to use the supplied crossovers.
 
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