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      12-30-2012, 06:36 PM   #1
Z4 Roadster

Drives: Merlot 2005 Z4 3.0
Join Date: Mar 2008
Location: Honolulu, Hawaii

iTrader: (0)

New Z4 Owner needs audio help

Hello All,
I am a new 2009 Z4 3.0i owner. My questions have to deal with upgrading the standard 6 speaker system. First, can someone please tell me what the metal rectangular device is behind the driver's seat on the enclosed picture? I thought it was an amplifier but am not sure. Second, can anyone tell me which steering wheel adapter to use once I get an aftermarket head unit? (I am putting in the Pioneer DEH-X9500BHS). I want to be able to use the full sterring wheel controls. I am also looking at replaceing the front 6.5s with Polk Audio DB6501 with the tweeters (my car did not come with tweeters) and replcing the door and rear speakers as well. Thank you for any help/advice.
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