Here is the speaker sizes for the 2006 RL.

A U T O M O T I V E
S Y S T E M S D I V I S I O N
The Bose® Cabin Surround™ Sound System
for the Acura SJAA
7
System electronics
A Bose® digital amplifier mounted in the left rear
quarter panel. Includes:

• Centerpoint™ signal processing circuitry

• SurroundStage™ signal processing circuitry

• 8 channels of custom equalization

Ten-speaker
surround sound system

1-inch high-performance neodymium tweeter
mounted in each mirror patch.

2.5-inch Twiddler™ mid/high-range centerfill
speaker in the middle of the instrument panel.

6.5-inch high-performance neodymium
speaker in each front door.

6.5-inch high-performance neodymium
speaker in each rear door.

2.5-inch Twiddler mid/high-range speaker on
each side of the rear shelf.

9-inch Nd® woofer mounted on the rear shelf.


I tried to attach a diagram but could not figure out how to. Sorry !!! At least here is the info


Hope this is helpful
Netman