Hello,
I am new to audio and electrical tech.
I recently purchased the CDT https://cdtaudio.com/carspecific/nf6902.php package for my Nissan Frontier.
It lists a 4 ohm impedance for everything, but multimeter testing showed 2.1 ohms for the 6.5 rear fill, 2.2 ohms for the 6x9 components, and...