Pondering REL and Dynaudio subwoofers.

Have no clue if this will work but   
https://share.google/QWXeSgnx2U3gtt1tI

not having it connected to the amp might be the answer

@highend64 Yes, switching to low level, or a line level, would resolve the hum problem, but as you point out Rel much prefers the high-end connections.  In some testing I did, it was apparent that the high-end connection sounded more responsive, faster.  I didn't want to spend that much for a sub and not take advantage of it's full capability.

Same with going with a wireless connection, would fix it, but degrade its performance. 

Thanks 

Seeing this kind of sold me on the whole idea of switching to the Sub 6.  No, I'm not going to be using it in the garage. Haha  :-)

https://youtu.be/6-5hfOrLe20?si=775Z3Jk7OeMKQkug

@grantgg I glad you are happy that the REL highly level connection. If it working for you that is great.  I also have a REL sub but with a different issue. I felt that both line and high level signal was too weak for my taste. I am not sure if this was gain issue on the REL or too low of signal from the preamp of the Rotel. Before I had a Hsu STF-2 with plenty of gain.  Yes the REL and HSU are two different subs but with the REL I would increase the gain almost max just to be audible. Could it be a level mismatch  with Rotel preamp, maybe but I found a rare subwoofer processor from Atlantic Technology, SP-8000. This made a HUGE difference not only a gain but how if sounds. This might not be your case but seeing you discourage yourself from a hum issue that you want to go with Dynaudio 3k sub might be better. Go ahead and try it and if it works out in your system and room, more power to you. I had a similar situation with my REL sub. I want to go with a SVS, Rythmik or another higher end Hsu sub until I got the processor. I am totally satisfied with the outcome. 

The Dynaudio looks like a great sub with DSP and presets. Having Dynaudio speakers is a plus with dsp preset for different  models. With any other speaker manufacturer,  tayloring the right parameters might be more time consuming so keep that in mind.  

I have a few older RELs that have a ground lift switch built in and that gets utilized and works perfectly. I also have a Classic 99 that is NOT "slow" in any way, it simply vents downward which gives it a certain tone maybe...one of my subs is an excellent Q108 MK2 that also drives downward. Note the word for low frequencies is BASS not "base."