Replacement Driver Help

Hello All,

Have an elderly pair of Mirage M-1s that are definitely showing their age. Recently, one of the 5" mid-range drivers has been giving off a very audible scratchy quality during some portions of a variety of music. I removed the driver this morning and discovered that the surround is also disintegrating. I expect this is not the cause of the failure and would like to replace the diver entirely. I am aware of several sites that retail replacement drivers, but am wondering what parameter in addition to proper size should I be looking for. The speakers are rated at 6 Ohms nom and 4 Ohms min. How much should I worry about this? IOWs, will an 8 Ohm replacement driver do the trick?

Thanks,

IAN