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Originally Posted by rigdowntex
How can you tell if you do or not? Have a 2006 330i sport package idrive.
Looking to buy some upgraded subwoofers for under the seat. Will need the 2 ohm version if I have the upgraded system versus the standard 4 ohm version so I read......RDT
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You have some more to learn... but if you have a center channel and an EQ and Logic 7 settings in the HU, you have Logic 7/Top HiFi. If you lack all those, you have HiFi.
If you pop the tray out in the trunk floor, forward of the driver's side tail light, you can see the amp. If it's black, it's HiFi. If it's silver, it's Top HiFi/Logic 7.