Update.............. More Help please.
A technician friend and I have dialed in the 6922's almost perfectly. Plus we tested individual tubes to look at plate current etc. All looks good apart from one 6550c running a bit hotter than the rest. (see I even know the terminology now).And one 6922 being quite suseptable to microphony.
However the problem I have is this.... on the .5 Ohm resister which is the testing point for the bias adjustment on the power tubes I can only get max .098Mv on one channel and .122mv max adjustment on the other channel.
Has anyone had simialr problems ??
By the way Sirspeedy, Thanks for your comments Its a shame my clothing empire wasn't as successfull. Maybe I'll try hair/grooming products next.
A technician friend and I have dialed in the 6922's almost perfectly. Plus we tested individual tubes to look at plate current etc. All looks good apart from one 6550c running a bit hotter than the rest. (see I even know the terminology now).And one 6922 being quite suseptable to microphony.
However the problem I have is this.... on the .5 Ohm resister which is the testing point for the bias adjustment on the power tubes I can only get max .098Mv on one channel and .122mv max adjustment on the other channel.
Has anyone had simialr problems ??
By the way Sirspeedy, Thanks for your comments Its a shame my clothing empire wasn't as successfull. Maybe I'll try hair/grooming products next.