Message
Re: How to use the sub outs as inputs
2016-02-14 by smw-mail@...
Since the manuals I double checked are unmistakably clear on the send/return cables, I think there is something more to the question. Jon and Matt are indeed correct. about the need for TRS cables.*
In the P2500/Command Station manuals I looked at its near the beginning under Audio Outputs. In fact, its even in the Proteus 1/2/3 Manual just under Audio, but the content is very similar to more recent manuals. I know the manuals can be overwhelming; I know I spent many hours with my P2500 manual when I first got it.
However, perhaps you were looking for how to route external audio into the E-Mu's synth engine or effects. If so, you can't. As the "Output Section" flow diagram shows, the external audio signal from the rings (of the Tip-Ring-Sleeve--aka TRS--cables) of the subs only gets added to the Main Output after the FX.
If you want to process external audio through an E-Mu, you would need an Ultra Sampler with an RFX-32 card and probably some other option cards.
My guess is that you figured it out, but I thought I'd write up the details in case any one else looks for the answer. *Other than the part about the Ultra, I just gave more detail for what Jon and Matt already.
Steve