Can you replace two 16 ohm speakers in a combo amp with 8 ohm speakers as long as the impedance is set properly? - Quora
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
Running 6-Ohm Speakers on an 8-Ohm Amp - BoomSpeaker
6 Ohm vs 8 Ohm Speakers – Which One Is Better Choice? - BoomSpeaker
How to stop worrying about speaker impedance - CNET
Ask the Editors: Can You Mix and Match Speaker Impedance? | AVS Forum
Myth busted, real test 4 Ohm vs 8 Ohm speaker? Car audio system PRV AUDIO 6MR500-NDY - YouTube