[styler69]

i personally do not think the subs make a huge difference but i think the real issue is that the BMW amp is underpowered for the bavsound set up. the bavsound speakers are not as efficient as the HK and so you really have to drive the system hard to get more bass etc. at highway speeds you will be turning your volume up about 75% max volume for average/moderate response. in the end i didn't think bavsound was bad, i didn't uninstall the system and get a refund but i also wouldn't do it again.

you will probably find the bavsound more flat sounding tho, i did think the treble is less forward.

all said, BMW should be putting a better sound system in these vehicles. oh, and getting rid of the active sound feature...