so im building an audio project that runs off of 2 9 volt batteries. i would like to substitute a wall wort. the problem is that the schematic has the two batteries in series with a ground inbetween. i attached a schematic. is this possible with a wall wort, weather it is 9v or 18volt? cause i have both. if this is not possible, could you please explain how this can be done as simple as possible with the least amount or parts?
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