How can you make a 4 ohm amp work with an 8 ohm home theater system?

Question

im going to buy a subwoofer for my home theater and found out that the output power of the home theater is 8 ohms, the only car amps i can find only put out 4 ohms, is there any way i can make the 4 ohm amp work with my 8 ohm home theater, the speaker im hooking to it is the subwoofer output, the subwoofer i want is 8 ohms too, i can get a 4 ohm subwoofer that is very nice but i just dont know what to do

Answer 1

Try a 4 Ohm ceramic resistor rated for the wattage

connected in series with the speaker on the 8 Ohm output.

Answer 2

I wouldnt hook up your car amp to home speakers, they are built differently and meant to be used differently, your car amp will easily damage the system.

Answer 3

Just because a car amp accepts 4 ohm doesn't mean it can't accept 8 ohm, the only thing is the power will be cut in half.

To overcome this, get an amp that's double the power @ 4 ohm so when you connect 8 ohm to it, the power will match.