Quote:
Originally Posted by Bill Hanlon
Some speakers only have one wire connecting to them and use the metal frame of the speaker to attach to the metal frame of the car for the ground circuit. If your speakers are this type you cannot make them wired in series without modifying the speaker itself.
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Quote:
Originally Posted by Greg Reid
...I was wondering what the result would be if I wired the two 4 ohm speakers in series and used them with my factory AM unit? How could I make up the other two ohms?
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Assuming that the speakers' minus sides are isolated from the speaker frames, you could connect them in series. The other two ohms need be made up. Again, the "20% Rule" applies.