Marc Shaw

I recently installed a new set of Infinity Reference rear speakers and thought I'd share the joy.


Here we go:

Fold both the rear seats forwards.
Remove the covers over the child-restraint hooks (if any).
Remove the 4 screws (circled in green) holding the rear panel in place.
Use a flat-blade screwdriver to pop the speaker covers off (gently as they are brittle and can break).

Marc Shaw

Pull the rear panel forwards and rotate the top edge forwards to tip it forwards and upside-down on the rear storage space.
I did not remove the seatbelts but if you want to install the speakers on your workbench, you'll have to.

Marc Shaw

Here's a view of the rear of the speaker.
Gently pull the speaker wires off the tabs (smaller connector is negative, larger connector is positive).
Unscrew the 4 screws holding each speaker in from the top of the rear panel and gently remove by pulling out the top of the rear panel.

Marc Shaw

I bought the speakers (Infinity Reference 6412cfp) speakers new from eBay.

Marc Shaw

A comparison of the old (left) and new (right) speakers.

Marc Shaw

Install the new speakers (they drop right in - a perfect fit) and screw in with the same 4 screws - screw holes line up just right.
Reconnect the speaker wires - tabs are the correct size.

Marc Shaw

The only problem is that the stock grills don't fit - the new speaker is slightly smaller (about 4 mm end-to-end and 8 mm side-to-side).
To resolve this, I used black weatherstripping foam (4.8mm thick, 9.5 mm wide).
I split the foam lengthwise (to make it 4.75mm wide) and stuck a piece on each of the tend edges of the speakers (green arrows).
This allowed the stock grills to snugly fit on (I tried velcro and it did not work well).

Marc Shaw

The sound is better but not great yet as the front speakers are in even worse shape (crumbling apart) and I started work on them today.

Marc

Chris M.

Thanks to Marc for the pics, etc. but if you don't want to you don't have to flip up the seatback. Just pry up the grills, unscrew the 4 screws and disconnect the wires. It requires a "stubby" screwdriver for the rear-most screws but other than that it takes 10 minutes. My stock grills went right back on. Still no bass though; I think you'll have to get subs for that. The infamous Rod Birch himself was in Lexington recently. Anyone see this thread on the 993 board?
https://rennlist.com/forums/993-forum/128219-rod-birch-audio-upgrade-lots-of-pics.html

c

Marc Shaw

Gary - I am putting Infinity Reference 50.5CS 5.25" component speakers in the front. I got the passenger door done today (about 5 hours) and will post details once I am done. Front is more involved than the rear due to the cross-over etc.


Steve - the holes are from the child car seat restraint anchors. See here for Bates' write-up of the installation procedure and below for some pictures I took.

Speakers cost me US$32.27 from eBay.


Kris - I'm going down, I'm taking you all with me.


Chris is right - the rear shelf does not have to be removed but I found it much easier to take the extra five minutes to remove it rather than fumble underneath without being able to see to plug in the wires.

Marc