How to connect Rhythmik subs with a Willsenton R8 Tube Amp?

[Mag_Neato]

As racrawford65 said, your sub's amp will have to have binding post (speaker wire) connectivity first and foremost. Doesn't appear to be any on your sub, but I don't have your sub so you will have to verify.

If there are no speaker level connections (High level), you would have to use an adapter such as this:
https://www.crutchfield.com/S-PBdEuv...8aAlD9EALw_wcB

You would run speaker wire from the amp speaker posts to both your main speakers and to this converter simultaneously with jumpers from the binding posts, then run RCA cables from the converter to the sub. The sub has an adjustable crossover for the bass, but the speakers will get the full range signal.

Here's a video that should help no matter what the case is with your sub's connections:
https://www.youtube.com/watch?v=Ln0ph95ErBM

[racrawford65]

Good find, Ed, on that converter.

[Mag_Neato]

Where there's a will, there's a way!

Also, if a hi-pass filter is desired, I believe you can install some sort of inline filter to the main speakers to roll off the bass to them. Maybe just a capacitor inline with the speaker connection?

[zRouth]

Ed, sorry for the late reply but thanks so much for getting back to me. I will try the converter. I hope it doesn't introduce any hum. But I really thank you. I didn't even know that was an option. Awesome!