18.05.2017, 16:22
Hello Ken,
I think the Uher Report Stereo in that tapehead thread is quite different from your Report Monitor version.
In the schematic of the Report Monitor there are no Germanium transistors, the supply voltage is positive with respect to ground and most of the speed-dependent equalization-switching is done with transistor-switches instead of the long sliding switch-bar used in former versions.
Perhaps you can locate the fault by tracing those spikes from the output back to signal points more to the front of the channel-strip. If you can find a node without those spikes, you know the origin is between that one and the next in the chain.
How does the noise depend on potentiometer settings (volume control, tone control, etc.) ?
Regards Kai
I think the Uher Report Stereo in that tapehead thread is quite different from your Report Monitor version.
In the schematic of the Report Monitor there are no Germanium transistors, the supply voltage is positive with respect to ground and most of the speed-dependent equalization-switching is done with transistor-switches instead of the long sliding switch-bar used in former versions.
Perhaps you can locate the fault by tracing those spikes from the output back to signal points more to the front of the channel-strip. If you can find a node without those spikes, you know the origin is between that one and the next in the chain.
How does the noise depend on potentiometer settings (volume control, tone control, etc.) ?
Regards Kai