Subwoofer for Kef LS50 Wireless II?

@midareff1 recently tested a couple of Martin Logan Dynamo 800x subs with his very nice music only system. Long story short, he absolutely loved them.

I have 4 REL S510 subs in our large room. Using the high level connection. Sounds fantastic. 

I spent a good amount of time trying to integrate my two SVS subs into my system.  My main speakers are a brand of towers not sold in the U.S., but are 2 1/2 way with all scanspeak classic drivers; a 1" soft dome tweeter and two 7" midwoofers.  So they put out some bass on their own.

I was following the time honored wisdom that the bass should not stand out if the subwoofer is properly integrated, you only notice it when the subwoofers are turned off.  After more time than I care to mention trying to implement this "integration" advice, I just cranked up the subs gain (volume) to a non time honored advice level.  That was what was needed.  This is not akin to the type of bass you hear from the inside of a teenager's car. 

My listening pleasure is mostly rock, and I now clearly hear the bass guitar and bass drum setting the beat down low when they do their thing.  Just as I would at a live concert.  JMHO, YMMV

I have a pair of the ls50 wireless II with a Kef kc62 sub and the wireless sub tx/rx kit. I use it in a tv room in lieu of a sound bar. Works wonderfully. You wont believe the kc62 performance considering its small size.

+1 fiesta75

audiocanada, Your SVS SB1000 subwoofer is capable of a some sophisticated application based equalization and Q adjustments which can be varied to taste and preset to memory. 
Along with audiorusty's crawl test suggestion the result should be spectacular regardless of source material.
Are the adjustments and positioning overwhelming?

I've used many subwoofers for public address and in home including REL.
What is REL magic?