Ok good to know. I heard today from a friend that they were MB quartz

Have you tried inverting the phase of the subwoofer to mitigate the effect?

Sorry for the double post. Processors are not required to keep your factory head unit, that could be accomplished with line-level inputs to your aftermarket amps. Signal processors are basically advanced line-level converters that add features such as time correction to produce proper staging and scrubbing to flatten the frequency response curve, usually with user selectable options for EQ. They are completely optional, but are helpful when you're trying to move to a different speaker count (ex. a 2-way component set in the front as opposed to the stock 3-way) or to provide full-range to the rear speakers (but why would you do that and destroy your front staging??) Do a cost-benefit on them and ask yourself if you'll really use the advanced features. Some things like time-correction are basically impossible any other way but most other features can be improvised for significantly less, ex. A DSP delete would open up a full range source allowing you to run whatever frequency you'd like to any driver.

Nope I was waiting till i got my 2nd woofer and bmw box installed..
I had planned on doing clamshell -push pull but then I really like the box being in the side compartments since i dont have nav im a put another box in.

Yes, I think DSP Delete is a MUST, That kills sound doesn't it? And run all new wirings, while leaving old once untouched. Also, Can 6Channel Amp be connected to player? I mean, How many inputs does it have? Is there picture of it? Sorry, don't know much about it yet.
Oh, and don't forget to do Sound isolation while at it.

Hey rasta any update on this yet. Did you install your box yet? Also I want to reword my statement about the ED 11KVs what i meant to say was if you drive with windows down then bass is overpowered by road noise and other speakers. I always drive with windows down. Now if you drive with windows up then the 11KVs does put out some nice SQ bass. Put the windows down do about 50mph ya notice that nice SQ you had is pretty much gone. Thats when the other speakers are overpowering as you increase the volume, to compensate with roadnoise. I also turned off speed vol setting because that introduces distortion because its changing the settings you tuned your amp with. Your car was stopped so it was set at x vol and you adjusted the sound to that setting . you then speed up it now increasing the level and gains. Also changing it from what you originally set the curve at.

I still have not ordered the 2nd ed speaker and box combo. Its on my list of things to do. When I do get it i will post some pics.

I haven't got it installed yet. Was waiting for my BSW midranges I purchased. Might do it this weekend. Hoping the sub won't be too overpowered. Mostly windows up driving though.

just got the car back a few days ago, did it on tuesday. it sounds amazing. bass is pure and mids and high are perfect. everything's perfect - kick drum thumps all around and clear.. love it!! the ED sub fit perfect as well but i need to cut the back panel and put a grill on so i don't muffle the sound. will take some pics when weather clears up

sweet cant wait to see it now im just waiting on ED to send my 2nd sub they told me around decemeber or january.. darn thats a long time. after that im getting the bsw tweets, and a specdock2.5 and maybe the midranges