OK, so we finally got the video formatting worked out. It's very informal; Matt sat in the back seat with the Canon XSi camera capturing our back-to-front-and-back-again fading demo by moving the camera's built-in microphone forward and backward along with the fades. We're listening for sonic improvements (detail, tone quality, dimensionality) when we fade to the JL Audio components up front from the stock GM speakers in the back. Check it out and see if you can hear the difference.

Read the entire Building a Mobile Listening Lab series:

Laying the Foundation, Part 1
Laying the Foundation, Part 2
Laying the Foundation, Part 3
Dynamat installation and pre-wiring for amplifiers
Installing the front door speakers
Video: factory vs. aftermarket speakers
Rear speakers, amplifier, and subwoofer
Report on the Yukon system's performance
The ultimate in system tuning
Video: Alpine's IMPRINT signal processing in action