Not sure what the mounting depth of the JL's are. More than likely they were too deep.
What mounting depth measurement did you go by?
I mean:
Quote:
- JL Audio C5-400cm
- Top Mount Depth: 41 mm
- Fits e90: Y (should fit comfortably, but no proof as of yet)
- Fits e92/93: Maybe (may require modifications to speaker grille and custom adapter)
- Product Link: / http://www.jlaudio.com/c5-400cm-car-...ossovers-99127
- Installation Link:
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says to me, "Not sure, better double check fitment"
Quoted above was a direct copy/paste from the Aftermarket Replacement Speakers List thread right here in this forum...