I always keep the phase the same so yes, if I add an inverter on the input, I need to add another inverter somewhere else. However, I want to look at the schematics first. For example, if there is a normal and invert output, they just reverse. You could always add an inverter on the output, or add another inverter after the input inverter.
Dave
--- In ModularSynthPanels@yahoogroups.com, "wjhall11" <wjhall@...> wrote:
>
> OK, Mr. B., in that case, the output to the MIX jack should be re-inverted, right? We could use one side of a dual op-amp for the input mix inverter and the other side to re-invert the summed input for the MIX jack.