| Re: Help with subs and IB type R?? We don't recomend mixing brands/sizes/etc. of subs in an IB. Make sure that all of the drivers that you use are identical. Second, we don't normally recommend using 12" drivers. Thomas_W (the IB Guru) does use 12's but he has a dozen of them. 15's or 18's are a much better choice since they can easily move more air than a 12.
Sell you ED's and your Alpines and pick up four IB 15's from Fi or AE Speakers. You will be much happier with your sub.
-Robert |