How do you wire 2 80hm speakers to my project one dc series model?

To wire two 80-ohm speakers to your project one DC series model, connect the positive terminal of the first speaker to the positive output of the amplifier, then connect the negative terminal of the first speaker to the positive terminal of the second speaker. Finally, connect the negative terminal of the second speaker back to the negative output of the amplifier. This series configuration will yield a total impedance of 160 ohms, which is suitable for driving with an appropriate amplifier.