BMW 3-Series (E90 E92) Forum - View Single Post - E92 Audio Upgrade Intro and Phase 1

gIzzE · 03-07-2011, 01:28 PM

Did you seal the driver in the enclosure?? It needs to be air tight.

Without it being airtight they go down to around 50hz, with it airtight they go down to 30hz and gain around 6db, which is twice the volume.

03-07-2011, 01:28 PM	#31
gIzzE Major General 363 Rep 5,984 Posts Drives: F11 + 911 C4 Join Date: Apr 2006 Location: Norfolk, UK. iTrader: (2)	Did you seal the driver in the enclosure?? It needs to be air tight. Without it being airtight they go down to around 50hz, with it airtight they go down to 30hz and gain around 6db, which is twice the volume.
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