Cooking up subwoofer


I have a simple system naim atom driving focal kanta 2 speakers want to hook up a rhythmic 12" subwoofer. Not sure How to on the back of the atom.I hooked the rhythmic to preamp out on the atom I do get response but there’s not much there. Obviously the rhythmic has it’s on amp so...
myradio
Welcome, a Rythmik owner may be able to help with the model name and or number of your subwoofer.

A powered sub usually has a gain or volume.    
Subwoofers are best cooked at 325 degrees for about 13-15 minutes per pound.  Happy Thanksgivin’
Seems like the preamp out should work. Some of the rythmik subs have speaker level connections. Which one do you have? 

If you have speaker level connections Tee-Jay on YouTube can show you how to do it. He's awesome!

https://youtu.be/Ew7G6H9YoVA