Alright, time for a review on the Monsoons.
First of all, they look really nice.
Also, just to let you know that I have not fully installed them yet, but I plugged them up to my e38 since it still had the front door speakers installed in the door panels for testing reasons. I have a sub in the car as well, but I left it disconnected at first to see what the Monsoons could do on their own.
First impression is...WOW! These things put out a LOT of bass. Once I cranked it up to a reasonable volume for the rest of the speakers, I needed to turn the bass down all the way and it still sounded very nice. The reason for having to turn it all the way down was that if the bass is turned up too much, the speakers sound a bit too "boomy". I don't know the best way to describe it, but it sounds kind of like the box is too small for the speakers at that volume. When the bass is all the way down though, they sound amazing up to volumes that would normally be my max. Again, this might be better once the box is fully installed in the car, but I had the same issue with my old e38 box with restored stock speakers when turning it up pretty loud, so I'm thinking it's probably just a limitation of the box. My possible suggestion for fixing this might be to get some kind of gain control installed inline on the Monsoons and that way you could turn the bass up for the rest of the speakers, while keeping the Monsoons reigned in a bit. I then decided to hook up my Pioneer 10" shallow mount sub hanging from my parcel shelf and it sounded even more spectacular. There was no more lack of low end at all and as long as I kept the bass on the head unit down to the minimum and just turned up bass boost on the sub amp, it sounded very good at high volumes. I bet if there was a dedicated gain control on the Monsoons, the whole system could be tuned quite well.
Ended up securing the box in Brandon's car and seems to be fine. Could have been because I tapped into my sub channels to run my separate sub amp. Sounds great now.