(2) The speaker out circuit provides an audio signal to the R-442
J103 and J104 pin E. When a speaker is connected to one of the connectors,
audio will be received (Figure 93). The speaker out circuit extends through
the MT-1898, J3514, CX-7058/VRC to the AM 1780, but not used. (Trace this
circuit on your system diagram.)
R-442 receive signal path (speaker out).