Well, You're missing my points on practically every level and getting them confussed with unrelated issues and theories....not really sure there's any point going on since a minimalist will always tell you that what you're doing is in excess. So, I'ma stop now.

enjoy the forum!

I've read both of those forums in great length...it's a great place to start. Problem with them is that they're both so one dimentional with their one line of thought and one only....which is swell for consistancy sake, but not very imaginative. It's not as though I care you think my system is in excess...but you're wrong. 2x12s on an amp off the sub channel, 1x10 on a separate amp off the rear channel with adjustable LPFs, slopes and time alignment on both channels. What I've done is isolate two separate frequency ranges of bass and pushed them through the optimal sized sub for the desired effect of cleaner crisper bass. There's no lobing issue because the two ranges don't overlap. If you don't want to do the leg work to figure out how this works and why I've done it then that's your deal....but don't doubt the research, trial and error I've put into this. It's different, it requires one more amp and sub than the typical set up but it works supurbly and it's not in excess.

"thats only becuase multiple sized subs in general is a no-no."

There's that one dimentional thinking again.

"Is it your assumption that a 10" sub can play a 100hz signal quicker then a 12" sub could?" i was trying to trick him on this one
No...a frequency is a frequency....speed it up and it become a different note. My point is a 10" can paly a 100 htz frequency more efficiently than a 12". Similarily, a 12" can play a 60 htz frequency more efficiently than a 10". Yes they can both play them...but isolating them like I've done sounds better.

"PLease do research on multiple sized subs, you'll find that having a sub to play in a 20hz range is a waste"

Who said anything about trying to go down into the 20 htz range? That's silly. The human ear can't even hear that.

"technically..yes you can but then you're negating all the time that the producers have put in to master a stereo track (since you're talking aobut powering left and right speakers off one chan)."
A) no amount of ground breaking research was ever paid towards improving the quality of the factory speaker back in 1987. Futher...that technology works at twice the resistance and half the Watts that the current technology works. In other words...it works better at two to one.
B) I never said ANYTHING about hooking the right and left sides together. I said hook the rears to the front. back right to front right and back left to front left. With another set of speakers on the rear your stereo ambiance is still maintaned.
that is exactly what he said if you read the first post

"you're overlooking soundquality, stereo seperation, headroom (very important), and speaker efficiencey, to name a few things. Just because you can do it, doesn't mean it's correct."

sound quality and efficiency for an old factory speaker (and I'm only really talking about the 240 speakers here) is only improved when doubled up in parallel on a HU with enough juice to push them...I suggest you try it. Stereo separation is maintained for reasons already addressed in the above comment. Headroom isn't an issue because the RMS wattage for those doubled up speakers is significantly short of the HUs peak power. I did it because it worked better.

"The only way that multiple same size drivers playing the same frequencies works is when you're dealing with a linear array with special attention is paid to placement of the drivers. they need to be extreamly close together and on the same plane"

or sepparated by a large foam core seat creating accustically separate zones of sound. You know what....never mind.....we're talking about 4" speakers that barley put out enough sound to be effective on their own....not several 8" mid range speakers set up around your Barka Lounger. You can get as technical as you want about this point but when it comes to THIS specific case you're spouting out unessecary science.
aren't most linear arrays 3"-4"...