Re: play the guess the sub game !? here is my pro plus 15
It's definitely worth its weight in gold, especially if you have a bunch of drivers laying around. You hook it up to your sub and your computer sends a signal through it which is picked up by the DATS and displays the T/S parameters on your screen.
'65 VW Bus
MA Hippo 122 (awaiting install),(2) Aura Sound 8's, (2) SoundStream 6.5 coax, (2) Alpine Type-S 6x9's [rear fill], MBQ DSC1500.1D, RF 501X
'02 BMW 330xi (AWD coupe)
Harman/Kardon 12-speaker System Option + Dayton HO D4 10" and PPI Ion 650.1 in sealed box
And many more car audio goodies in storage