Myth busted, real test 4 Ohm vs 8 Ohm speaker? Car audio system PRV AUDIO 6MR500-NDY - YouTube
What diagram do I use to have four 8-ohm speakers with a 4-ohm receiver? - Quora
What Is An 8 Ohm, 4 Ohm, 2 Ohm Or Other Impedance Speaker?
How to connect four 8-ohm speakers in an 8-ohm amplifier? I have two channel amplifiers. Each channel I need to connect 4 speakers. Is that possible - Quora