Phoenix Gold Factory Tour
I visited Phoenix Gold back in 2003, as they were launching the new Octane series, but the Titanium series was still being sold.
I live in Seattle so driving down to Portland was a relatively short trip. I went with my coworker Jeromy, and got the full tour, from top to bottom.
First stop we made was to go back to the speaker testing area. Along the way, we came across a few blasts from the past. At the top you will see Cyclone subs (or a few prototype anyway).

Here are a few pictures of the speaker sound room they test speakers in. PG makes in wall speakers besides car audio so the room is set up for that.

