Sub woofer naive question day

Currently Spendor D9. But will be getting some Burchardt e50’s and their sub10. 
I believe the answer to the question is yes. 
However this will answer the question

Guess I cannot post a screen shot. 
In amongst the pictures is a schematic of electrical layout. 
https://buchardtaudio.com/collections/active-speakers/products/sub10

You would run the amp's RCA "PRE OUT" to the subwoofer's RCA input.

It looks like the sub10 is designed to work best with Burchardts's active speakers. As Deep_333 states, you would connect your amps pre out to the sub10's input and then connect the sub10's output to one of Buchardt's active speakers input.

Despite what they call it “20Hz@94dB 40Hz@100dB” is a dramatic -6B roll off.

Does their app allow you to adjust more gain at 20Hz?

Thanks everyone. 
The responses are more helpful than y’all will ever know.