Replace Door Speakers on your Volvo 850
Actually, it’s kind of the IMPEDANCE that matters. Sure, the sensitivity tells you how efficiently your amp’s wattage will get converted to sound, but the impedance determines how much wattage your amp will produce and how likely it is to BLOW UP. If your bass shakers are 16ohms, then it won’t add much load if you wire them in parallel with the existing speakers – it will drop the total impedance from 4 ohms to 3.2 ohms. Use this site for speaker electricity calculations.
Read the rest: Door speakers on 850 blown. Replace?