Single Sub Woofer for two separate systems?

Keep the ARC music gear unplugged until use and then unplug the HT receiver when using the SW with the ARC set-up?

or maybe keep the SW hooked to the ARC gear and only use the SW w/HT when watching movies or something worthwhile for bass. Don't really need the SW for watching regular TV or even sports, but for good action movies, yes.

Thanks all. Unfortunately my sub (Carver) does not have a single LFE input. Instructions say to use the Left Line Level input for a single cable to the AVR.

The sub does have controls for a xover, phase, and sound level.

It also has Speaker Level inputs where I could double wire the sub with my front audio speakers. Did this before and seem to work fine.

Currently, I have the sub hooked to the music amp/preamp by way of splitter off the Main Pre outputs. I believe that is the preferred method.

I also have a dedicated electric line with hospital plug so I could separate the two systems from each other. Double wire the sub from the Speaker Level inputs to the audio amp speaker outs, keep the single LFE cable hooked to the sub's Left Line In from the AVR, and just make sure one system is off?

There are two outputs on the pre, one main and one tape but I don't believe the tape will work.

Not really concerned about using the splitter on the main out. If there is a sound degradation from previous set-ups, I don't notice.

Thanks, I may look into the switch.

Thanks Imhififan, I'll look into the Niles switch.
Sounds like a good way to go.

Cool