'99 Porsche 911

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=4394
Printed Date: August 17, 2025 at 5:46 AM

Topic: '99 Porsche 911

Posted By: billfitz
Subject: '99 Porsche 911
Date Posted: October 12, 2002 at 2:03 PM

Hello,

Can someone give me some ideas on installing aftermarket speakers into the factory 911 locations? The previous owner already did an aftermarket amp, and I have added a sub amp and 2 JL 10W6's. (Was anyone really gonna fit in the back seat anyway?) The system sounds good, but lacks mid bass. I'd be interested in knowing if anyone has any info on building custom door enclosures for 8" mid-woofers up front or maybe fitting 5.25" or larger in the factory 4" locations. Any ideas are appreciated!!

Thanks!

Replies:

Posted By: Velocity Motors
Date Posted: October 12, 2002 at 2:13 PM

8" subs require quite a bit of fiberglassing and basically a new lower door panel. We put 8" subs into our Integra that had 5 1/4" OEM speakers in the doors and needed to do some cutting of the door and also the door panel. If your not comfortable with using fiberglass, I would leave this to the professionals.

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Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA

Posted By: dyer
Date Posted: October 13, 2002 at 9:23 PM

Instead of 8" subs, have you considered a component system? This would probably sound the best.

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Dyer