I have an old Traynor PA monitor that has a 16 ohm Eminence 10" speaker and a Motorola piezo. It has a volume pot mounted on the jackplate. I really need it to be 8 ohm. What I'm looking to do is add a resistor in parallel to the piezo to make it also a 16 ohm load, add a cap before that to roll off the low end going to the piezo, and wire that parallel to the woofer - hopefully that will change the total speaker impedance seen by the amp to around an 8 ohm? I'd probably be feeding that monitor somewhere around 50 watts or so - does the resistor need to be rated 50 to 100 watts? What rating does the capacitor need? Part of the point of the exercise is to alter the speaker in a very cost effective way - if it will end up being more than 30 bucks or so I might as well just replace the speaker with an 8 ohm. Thanks!