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MS-8, active setup question

818 Views 2 Replies 2 Participants Last post by  The Leaks
Hello all,

New to the forums but have been doing car audio for about 10 years. I'm very familiar with passive setups but new to active.

I'm planning on getting a new (used) car, possibly an older S4 and this is the system I'm looking to do.

Source: Keep factory HU
DSP: JBL MS-8 - to grab source from factory and send to amps
Amps: Was thinking (2) PDX F4''s and (1) PDX M6 (but I'm more flexible on amps- my budget is about $1000 for amps, so any better SQ amp combos would be welcome. I don't know much about the "nicer" sq amps- other than what I've read here. (could do (2) DLS cc44's and then the alpine m6 for the subs.)
Fronts: DLS Scandinavia 3 way (or Iridiums if I can find them)
Rear: DLS r6.2 or Random components- suggestions
Woofer: 12in JL or ID or RE - to get 600wrms

I've heard you can run not only full active off the MS-8, but you can also run a combo of active/passive.

Question I have is: Can I do what I've drawn out in the attached diagram with the MS-8?
(Run 3ways up front active and then steal 1 channel from each of the PDX F4's to run passive comps for the rear?)

Why I choose what I choose: I like Alpine, have had great luck with them in the past, small and stackable. DLS- really prefer DLS sound, like their soft dome tweets, running DLS upi6 and R6 in my cars right now. Is this the most efficient amp combination? I know people have also run rears off the MS-8 (but it's only about 20wrms and I got 2 free channels so why not use the amps right?) System goals= SQ, little nicer system than I've had in the past = 100wpc as opposed to 50 and full active. Mids and tweets would go in custom A pillar. I want a punchier system. I've used DLS amps (CA51) and although they sound good- I don't think it sounds any better than Rockford's I've used that have a bit more impact.


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The MS8 is only 8 channels. So you could not do the system as drawn since that would require 9. I am planning on having the mid and tweeters next to each other running off an active crossover external to the MS8. That way I can use one channel for each mid/tweeter.
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