Sharing a subwoofer with 2CH and HTs rigs!

I hope others will chime in on possible problem with use of a switch box. I would think any quality one completely isolates inputs. I doubt one would want one's sub to receive signal from two preamp outputs at the same time.

The issue differs between use while both amps on and use for selecting which audio vs. video amplifier to have on and selecting routing to sub without movement of cables.  Do you really need to have both amplifiers on at the same time. Is warmup a concern?

I am also interested in what others contribute.  

As far as 8 know the RELs are the only subs that can mix RCA stereo inputs and .1 LFE

Flynnrd,

“In the velodyne manual it expressly IN ALL CAPITAL LETTERS AND BOLD says do NOT use both low and high level inputs concurrently... 😕”

interesting, the JL I use just has right and left RCA. I have never used the high level speaker hookups. Maybe call them and see what they say.
If you have two I send the preamp to right on one sub and left on the other sub. Then send the LEF signal from the receiver to the open input.
This allows the mains to use the active crossover and you can still adjust the sub level through the receiver/processor.

I can’t recommend JL audio though. They are always breaking. The electronics in them are total junk (they sound good when they work....)

Hey, James. Velodyne is out of business. Talking to some pro audio guys about it to see what they say. They do this kind of stuff all the time, I would guess. 

Mesch- I certainly don’t need to have both amplifiers on, and don’t plan on it. My worry is that, by accident, at some point I WILL, and want to avoid that possibility!