sensitivity

Ok so I’ve had this deck 1.5 years It’s been in my rav4 Ford focus and now my Chevy Silverado I have the park brake bypass module installed and it works fine I run 2 sundown audio 12’s and 1300 watt amp As of late when I’m bumping the unit will pause or jump from Bluetooth or CarPlay to...

What is a good sensitivity that I should I be looking for in a sub when my 4ch speakers have a sensitivity of 93 dB (at 2.83 V). Should I be looking for similar specs or is it a completely different equation? I do see different sensitivities at different voltages and do not know how to compare...