These guys go into your wall (!). You cut two rectangular holes in your wall and put the plates, holding the drivers, in place and turn some screws that auto lock them in place. I have no intention what so ever to cut holes in my walls but will build speaker cabinets for them instead.

They sound bad as is. In the store I thought they sounded good but at home I realized their problems. The woofer has a loud peak around 1 kHz and the tweeter becomes aggravatingly loud and piercing around 7 kHz.

The solution is to bring out your soldering iron. Remove the small 0.1 mH inductor and the 4 ohm resistor from each crossover. Short circuit the 3 ohm resistor on each crossover. Pull the connectors of the tweeter on the crossover board and reverse their places. Now the woofer doesn't dip as much in volume above 1 kHz, plus it becomes louder all over, and the tweeter now has an even loudness throughout its spectrum. (The drivers become much better matched.)

The bass is still a bit thin at the low end but this is a great DIY tower speaker project. Find a drawing of a yard-tall speaker cabinet and cut out a rectangle in the wood near the top and pop in the in-wall-plate and see what happens. That's what I'm going to do.

The RC55i with the 5 1/4 inch woofer sounds more natural and resolved than the RC65i with its heavier, slower-moving 6 1/2 inch woofer.

I can't see what the bigger inductor handling the woofer is but with my crossover surgery it seems like a good fit with the excisting 5.8 uF capacitor handling the tweeter. Of the two, the woofer is of much better quality, almost a fullrange driver. The tweeter is a bit sterile and cheap to its sound. I don't know what their impedances are. I saw the plates on sale when circuitcity went under. I thought of a speaker cabinet instantly. They sound good now. I can listen to them through my audiophile tube amplifier without becoming aggrevated.

Connect them to the 4 ohm or 4-8 ohm speaker connectors on your amplifier. If you don't want to go ahead with my tweaking but still seek a way to get a better sound, simply connect the speaker wires from your amplifier directly to the woofer alone. Now there is no uneven sound image but rather a gradual loss of high frequency tones.

If you find that my suggestions are indeed amazing and turn your primitive noise makers into almost-audiophiles, please put $3 in paypal account mailto:linuxlund@aol.com but remove the mailto: first.