I have had a pair of Paradigm Micro speakers for a couple of years, they sounded pretty bad no matter what amp/preamp combo I used. Bass was very undefined, midrange was weak and the highs were veiled. I was about to sell them, then I decided to take a look inside. Crossover consisted of a resistor, "I" core inductor and a $.27 mini electrolytic cap. I replaced the cap with a Solen of the same value, and burned them in for seventy hours. The results were like night and day!!! Bass is well defined even though the woofer is only 4.5", midrange clear and strong, highs well defined and clear. Speakers are being used in my den powered by a rebuilt Heathkit AA-32 amp. System sounds FANTASTIC!