Sub woofer naive question day


I am a geezer and have had decent audio equipment for better than fifty years. But have never owned a sub woofer. What is the proper way to implement the speaker into a system with an integrated amp that does not have a specific sub tap? The amp has a line out and a pre out. 

hbarrel

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. 

SVS now sells an adapter to drive any subwoofer that has an RCA input, using a speaker-level connection. I have not tried this product, but it's inexpensive and comes with a home trial period.

When it comes to sub(s) two is better than one and one is far better than none. REL has lot's of videos as doe Youtube.

If I can ask a related question, when an amp has a “sub out” does that connection normally cover the entire frequency spectrum or just the lower end? Maybe there is no “usually”?