Practical tips for setting up your subwoofer(s)

The informative Rel link above should be consulted only after the sub is positioned correctly in the room.   If positioned incorrectly, the listening chair may be sitting in a room null.  No amount of dial adjusting will fix it.  It’s a physics issue.   Recommended for proper positioning is the sub crawl method.  Low tech but effective.

Integrating a sub - by positioning and electronically - is not a quick & easy process.  It can take weeks to dial it in seamlessly.   Well worth the effort when done properly.

+1 @steakster 

Unfortunately the term subwoofer is bing used by manufacturers of sub bass woofer systems as there is no formal defining performance measurement within the home HiFi community. The same can be said for low frequency Digital Signal Processing (DSP). 

If you're able to look your unit up and find the manufacturers specifications for its frequency response is ex: -3dB@15-25Hz range. Using the subwoofer crawl (using an online extra low frequency bass cadence) will audibly highlight your rooms unique multiple standing wave bass modes.

Positioning your unit within the most convenient mode it will integrate optimally within your room. Once positioned then use the adjustments your unit offers to integrate it with your speakers.

If the manufacturers rated frequency response is -6dB@xxHz these sub-bass woofers typically do not output enough extra low frequency to excite a rooms standing bass waves allowing positioning most anywhere within your room. All the best with it.

+1 Steakster, m-db

Yes! Positioning the sub is critical, as is room treatment--what's behind the sub? A corner? A wall? Nothing? Baffling? And what is the appropriate size and number of subs for a room of a given size? All of these considerations matter. Great call out.