When you play an amplified musical instrument through a multiple speaker system, play back older monaural records or tape or listen to a monaural source such as a speech or dictation recording through a stereo system, you may need to feed a mono signal into a stereo jack. There are two simple ways of accomplishing this: rewiring the mono cable plug and purchasing an adapter. Either method provides equally balanced signal to the stereo output. Tips Warnings Writer Bio

How to Wire a Mono Cable to a Stereo Jack - 88