Wiring Diagram For Series 3 Speakers. This will give you a 2 ohm load. Using resistors will work fine but youll lose 12 power across them.
Here you can see there is a cut in the line wire connected to lamp 3 so the bulb is switch OFF and the rest circuit is working. Speakers can be wired in series parallel or series-parallel to obtain the correct impedance to match your amp. The voice coils of each individual speakers are wired in series.
Then wire that series pair in parallel with the single 16ohm to give an 8ohm final output impedance.
This process is the same for resistors as well as voice coils in electrical circuits. The voice coils of each individual speakers are wired in series. And heres the wiring diagram for four guitar speaker cabinets wired in parallel. Since there are two speakers each speaker could experience 25W half the output power from the amp.