I have an SSW-210 that has drivers with part number 902-5861 in them. There is no place on these speakers for servo feedback. The only wires from the amp to the drivers are the normal speaker wires. There is a header on the board with nothing connected to it. Might these actually be non-original drivers? I'm pretty darned sure they are Infinity drivers but maybe someone replaced the originals with these and ditched the servo feedback?