I had a friend over and we found that the 4 ohm resistor (upper right of my picture) on both speakers are reading open. ?We couldn't believe that both speakers would have the same issue, so we tested them about 12 times. each time the result was the same. ?Dead. ? Anyone know where to buy replacement resistors like the ones in here (little white bricks)? I can only seem to find the tiny, regular looking ones.