I power my DX3065's with slightly more horsepower then thy can safely handle. So, I am thinking about adding a third speaker to use as a subwoofer of sorts. I would like to know if hooking it up before each crossover for the 3065's (+) of amps left channel to third speaker (+) and third speakers (-) to amps right channel (-) will work. The amplifiers manual gives this way of using it as an example. However, it shows it with a capacitor inline after each of the left and speakers and a coil on the middle speaker (third speaker) to work as a 6dB crossover. The only downside I can see for this type of setup is that I won't be able to protect the DX's mid/woofers (the main idea) using the either the amps HPF since this would also block the lows intended for the middle speaker or using the headunit's Frnt ch. HPF crossover freq. options. The fact that their would now be 3 drivers per channel (third driver shared by each channel) has me somewhat confused. Is there a more appropriate method avialable to me as far as adding a third speaker across both channels. I want to protect the DX's. However, I don't want to have to sacrifice the systems lower bass to do so. I have tried to lower the gain thru the headunits HPF crossover options but I am weak and cannot resist the pull of the amps raw power and excellent dynamic headroom and always find myself setting it back to 0dB. I have already had one of the 6510's stop working for me and Polk was gracious enough to replace it without hesitation. Thank You Polk. I do not want to risk damaging either of it's new replacements as I doubt the kind people (thanks Kim) over at Polk would be as understanding the second time around.