Having bought a pre-owned Sony FM stereo tuner through eBay, it came without any manuals. It soon became clear that to get the best from this excellent tuner I needed a decent manual because much of the operation was not intuitive to a newboy to hi fi like me. I managed to download the official Sony multi-lingual manual from Owner-Manuals.com with no problem at all - a really quick and easy service. I'm very glad I did because I found out all the operations of the tuner and was then able to not only set it up quickly but also to get much more from it that poke-and-hope trialling would ever achieve. In my book $4.99 very well spent.
Text excerpt from page 71 (click to view)
Enjoying Multiplex Broadcast Sound (DUAL MONO)
You can enjoy multiplex broadcast sound when the system receive the AC-3 multiplex broadcast signal.
Sub sound is output from the left and right speakers.
Main sound and Sub sound are output from the left and right speakers.
Main sound is output from the left speaker and Sub sound is output from the right speaker.
To receive the AC-3 signal, you need to connect a digital satellite tuner to the system with an OPTICAL cable (page 24) and set the digital output mode of the digital satellite tuner to AAC.
Press AMP MENU.
Turns off the AMP menu.
AMP MENU With cover opened.
Press AMP MENU. Press x/X repeatedly until â€śCUSTOMIZEâ€ť appears in the front panel display, then press ENTER or c.
The system enters the Customize Menu mode.
Press x/X repeatedly until â€śDUAL MONOâ€ť appears in the front panel display, then press ENTER or c. Press x/X to select the sound you want. x MAIN
Main sound is output from the left and right speakers.