sorry Jerry...
did not mean to pull an end run on the process. If I could tell you the why I would but I cannot. Connecting the drivers top plate to the amplifiers negative output (ground) just sounds better. Ideas and suggesttions have been kicked around but I really have no idea. One of those things. There is absolutly no risk and the mod is totally reversable and it only takes a tiny pice of wire and a couple of solder connections and you are done. In the past I have even connected the two points with some wire and a switch so that the switch could be made from outside of the cabinet so people could do the before and after deal. The difference is big enough to me that I really dont think that will be necessary for most folks. Don't forget to also do anything you can to damp or absorb noise generated by the spider in any wide range driver. Spider noise is easily heard through the thin speaker cone of the wide range driver. In a thin film planar driver that I helped to design years ago we totally eliminated the spider all together and replaced it with ferrofluid in the voicecoil gap where it acted as a liquid bearing. That was a clever idea though there have been others such as a sliding bearing proposed by Babb in his patents. Talk to Dave D. (planet10) for lots of solid suggestions regarding driver modification he has probably heard most all of them. All the best Moray James.
did not mean to pull an end run on the process. If I could tell you the why I would but I cannot. Connecting the drivers top plate to the amplifiers negative output (ground) just sounds better. Ideas and suggesttions have been kicked around but I really have no idea. One of those things. There is absolutly no risk and the mod is totally reversable and it only takes a tiny pice of wire and a couple of solder connections and you are done. In the past I have even connected the two points with some wire and a switch so that the switch could be made from outside of the cabinet so people could do the before and after deal. The difference is big enough to me that I really dont think that will be necessary for most folks. Don't forget to also do anything you can to damp or absorb noise generated by the spider in any wide range driver. Spider noise is easily heard through the thin speaker cone of the wide range driver. In a thin film planar driver that I helped to design years ago we totally eliminated the spider all together and replaced it with ferrofluid in the voicecoil gap where it acted as a liquid bearing. That was a clever idea though there have been others such as a sliding bearing proposed by Babb in his patents. Talk to Dave D. (planet10) for lots of solid suggestions regarding driver modification he has probably heard most all of them. All the best Moray James.