[714-Bimmer]

Adding some Bass... looking for a simple drop in replacement. Would swapping out the factory under seats sub make a noticeable difference? I have been looking at the at the Fosgate T3's. Don't have room for a sub in the trunk, nor do I want to add anything. I am not looking for boom boob, but yeah looking to upgrade the current stock sound.

Thanks, MG

[type-dRew]

I'd start by posting in here and with a much more detailed title

https://www.e90post.com/forums/forumdisplay.php?f=27

And from what I understand, do not do what you're thinking about doing. Those are mid bass under the seats, what you want to do requires a lot of effort to combine with the stock(assuming) logic 7 system

[gurusan]

If you have a ski-pass you can put a custom enclosure in that location...

http://www.e93subwoofer.com/shop/
A little too pricey.

Honestly the stock logic7 system is very good, it does lack on the lower end but most of the time I want to hear the engine/exhaust anyway.

[dannieloco]

I am on the same boat. I have a 2011 335is e93 and I need more bass. I was going to spend the big bucks and upgrade the speakers under the seat but from what I am reading, the bass wont be that strong after upgrading. So then I reached out to http://www.e93subwoofer.com/shop/

They have the kicker L7 with their sub packages and it takes 3 weeks to order. I think thats the only real way to get real bass without adding a sub box in the small trunk.

Its pricey but may be worth it.

[BSM n54iS]

BavSound