Chassis mods to compensate for yokes with different impedances?
Modessitt and I both did tube swaps on k4600's with the same tube model which has a bonded yoke (this thread). For the most part it worked great, but the result was a slight pincushion issue. Mine is apparently worse than Mod's, or else I'm just pickier than he is.
It got me to thinking that there must be a way to mod the chassis to compensate for the different yoke. At some point I may investigate this on my own if necessary, but I figured I'd throw it out there in case this has already been done, or if someone has good ideas on doing it.
Obviously if you keep the yoke with the chassis you don't need to worry about this, but if you've got a tube with a bonded yoke, or you prefer to keep the yoke with the tube so you don't have to worry about possible purity and/or convergence issues, this would be a big help.
Right now I'm particularly interested in the K4600, but ideally this thread could serve as a central location for whatever mods are necessary for all the common monitors. Obviously people will have to do some experimentation on their own because the exact component values will depend on what yoke they're dealing with, but knowing which components to mod and having examples of yokes used and what component values worked will be very helpful for others.
So is anyone able to help get this going?
Modessitt and I both did tube swaps on k4600's with the same tube model which has a bonded yoke (this thread). For the most part it worked great, but the result was a slight pincushion issue. Mine is apparently worse than Mod's, or else I'm just pickier than he is.
It got me to thinking that there must be a way to mod the chassis to compensate for the different yoke. At some point I may investigate this on my own if necessary, but I figured I'd throw it out there in case this has already been done, or if someone has good ideas on doing it.
Obviously if you keep the yoke with the chassis you don't need to worry about this, but if you've got a tube with a bonded yoke, or you prefer to keep the yoke with the tube so you don't have to worry about possible purity and/or convergence issues, this would be a big help.
Right now I'm particularly interested in the K4600, but ideally this thread could serve as a central location for whatever mods are necessary for all the common monitors. Obviously people will have to do some experimentation on their own because the exact component values will depend on what yoke they're dealing with, but knowing which components to mod and having examples of yokes used and what component values worked will be very helpful for others.
So is anyone able to help get this going?
