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<blockquote data-quote="Babs" data-source="post: 3062881" data-attributes="member: 567066">Oh absolutely.. The phasing between front tweets and mids is very significant... This is probably why a lot of SQ setups are just front two-ways or maybe three-ways with time alignment to each individually..&nbsp; Some head units will do a two way upfront such as the cd7100 or drz9255 or deh-p880prs or the cda-9887 coming out.. They switch to a three-speaker mode where (front tweets, mids and sub).. Basically I think you give up the rear fill, but for music only or non-surround setup, that&#039;s no biggie as your soundstage is upfront.&nbsp; Those head units have crossovers internally to go active with front components.. That&#039;s pretty much how that&#039;s done.Pg 54 of the CD7100 manual calls it the Sound Adjustment Mode.. From 4 speaker layout (fronts, rears, sub), to 3 speaker layout for (front tweets, front mids, sub).To do this in your case, you&#039;d have to split that front line.. Have to have separate channels for tweets and mids in order to run separate delays and active crossover settings.&nbsp; This is my plan.. A four channel amp for front soundstage, and a mono sub amp.. simple system... just no rear fill... kill off the rear door speakers in my Forester.&nbsp; With the SQ coming from those fronts, I won&#039;t miss the rear fill.&nbsp; //content.invisioncic.com/y282845/emoticons/fro.gif.c695f1f814b01c4ad99fe7f8cccadd29.gif... Oh, also, I think if you really had to go with rear fill&#039;s or a three-way, you can do this with processors like the PXE-H701 Alpine, or the JBL MS-8 coming out (processor that runs off OEM head units).&nbsp; Has to have enough separate channels for time alignment to each individual driver.. That MS-8 is a beast.. 8 separate channels.</blockquote>

[QUOTE="Babs, post: 3062881, member: 567066"] Oh absolutely.. The phasing between front tweets and mids is very significant... This is probably why a lot of SQ setups are just front two-ways or maybe three-ways with time alignment to each individually.. Some head units will do a two way upfront such as the cd7100 or drz9255 or deh-p880prs or the cda-9887 coming out.. They switch to a three-speaker mode where (front tweets, mids and sub).. Basically I think you give up the rear fill, but for music only or non-surround setup, that's no biggie as your soundstage is upfront. Those head units have crossovers internally to go active with front components.. That's pretty much how that's done. Pg 54 of the CD7100 manual calls it the Sound Adjustment Mode.. From 4 speaker layout (fronts, rears, sub), to 3 speaker layout for (front tweets, front mids, sub). To do this in your case, you'd have to split that front line.. Have to have separate channels for tweets and mids in order to run separate delays and active crossover settings. This is my plan.. A four channel amp for front soundstage, and a mono sub amp.. simple system... just no rear fill... kill off the rear door speakers in my Forester. With the SQ coming from those fronts, I won't miss the rear fill. [IMG]//content.invisioncic.com/y282845/emoticons/fro.gif.c695f1f814b01c4ad99fe7f8cccadd29.gif[/IMG] ... Oh, also, I think if you really had to go with rear fill's or a three-way, you can do this with processors like the PXE-H701 Alpine, or the JBL MS-8 coming out (processor that runs off OEM head units). Has to have enough separate channels for time alignment to each individual driver.. That MS-8 is a beast.. 8 separate channels. [/QUOTE]

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