I just got some speakers out of a infinity 1997 bose front speakers and wondering about ohm ratings it did not say anything on the back of them ,and i know the hhr stock speakers are 4 ohms ..Well i hooked them up and the work ok but i just dont want to ruin my head unit if there not the right ohms . The bose speakers look like regular speakers and no amps on the back of them.. any input on stereo stuff... just found out the bose speakers are 2 ohms if i put a 2 ohm resistor in line will that help?

 

just a update a pair of scosche 6.5 HD 6503 250 watts 4ohms and installed them and they work great sound fine but know my rear speakers will not work lol.. they were workin with the bose which were 2 ohms ,so im trying to figure out what gives? Any car stereo gurus can help me out ? Thanks for any reply's