All this IB DIY stuff has got me wanting to dive into it... and I think I may over the next few months.
This is not in any way indicating that my PB12-Plus/2's are not making me happy, they are incredible to say the least. This more just me loving to tinker with subs and being able to say, "Been there, done that!" for the fun of it more than anything else.
If you check out my car stereo link you'll quickly learn I love building sub boxes and experimenting with various subs. I've only built about 25-30 for myself and others.
Anyway... I'm considering a 4 driver setup with an amp. I don't know if I'd even bother with a x-over. I may use the other channel of my BFD and set a few filters there to act as a crossover... that should still leave me with enough filters to use on any peaks I might end up with.
My thinking is to use the IB to augment my response down super low... like below 25hz. I'll probably tune my SVS subs to 25hz to optimize them for more headroom, not that I need it, but why not. I may however run the IB's up to around 50-60hz to see if I can work out the huge valley I have at 40-45hz. That way I don't have to boost my SVS subs any... but I do want to keep the IB's lower so that I make sure they are not localized, as they will be in the ceiling/attic.
Man... can you imagine having two PB12-Plus/2's and a 4 driver IB setup? I know... overkill.
I've not decided on drivers yet... got some ideas but will discuss those later. I'm more interested in what amp is best to use for 4 drivers, or does this depend on the drivers I choose?
I'm wondering if I'm thinking along the right track here with what I want to do and also looking for any and all suggestions, opinions, recommedations, etc., etc.