[HELP, I Think I Screwed Up!]

Thanks Khornukopia!

The picture of the back of the sub didn't show the LFE label.  

Crisis averted!

Thanks again!

[HELP, I Think I Screwed Up!]

I recently ordered a Klipsch R-120SW Subwoofer however I didn't really pay attention to the input.  Today, planning for the installation  I just noticed the input is "Line Level".

My AVR is Denon AVR-S740H which only has a Pre-Out for Subwoofers.

Do I need to cancel my order or is there a way to make this work without adding another amp, hopefully?