Subwoofers - crazy upgrade!

I was also blown away when I added my 2 Rel subs. Just crazy. 

Yep, properly integrated subs make a huge difference. It can be quite frustrating getting them dialed in, but once they click it's magic. Take your time and really tinker with your setup to try every possibility of settings and placement to get it right. I use dual Rythmik F8 which reach down to 15hz in my small room but also cross with my mains up at 100hz cleanly and can play higher still. Since these can cover that entire range easily, I run a high pass filter on my main speakers to ease the load. This system now plays so fast and clean, it's shocking.

Glad to hear you're enjoying @cdtd. 

Congratulations on your success with your first sub.  Assuming you have a small listening room since you went with the micro.  I’ve have the best experience with 2 subs but your room may be fine with one.  Enjoy! 

@gdaddy1 

The important thing is that you like it. Enjoy. 

The more impact a sub has on your sound system, the more that would indicate a system that may not be very musical. The really good systems I have heard at audio shows  and in my own room do sound different with a sub but not life changing, just more bass.