low bass response

The answer to great low bass is a good sub woofer.  When I added a pair of REL subs to my Theil 3.7s, it made a big difference not only in base response but also increasing the sound stage width and depth.  The RELs disappear.  If you didn't see them, you wouldn't know they were there.  Two REL S/5s or better will definitely do the trick.     

+1 on RELs as a good answer. True, the room is also critical, but many of us don’t have choices or simply have different priorities. Subs will help and RELs are fast and tuned for music.

Also agree that multiple subs even out the bass response.

I really like bass so I went one extra: I have the main speakers and 2 REL subs running directly from the preamp, and 2 additional, smaller subs running through a DBX 120X-DS. Yes a sound crapifier for sure, but I don’t hear it through these two small subs that just add a bit of lower rumble when it’s not there in the music. I will also run the synthesized bass through Magnepan DWM woofers for a bit more texture.

The OP’s gear is waaaay too good to need that kind of help. But definitely, check out a couple of subs, or more.

Hi,

Your room is leaning towards Large and generally, loudspeakers, don't go so deep into the bass region. Many manufacturers will write amazing specs when it comes to frequency extension but remember that because it can reproduce low bass frequencies, it actually doesn't  mean that they can do it loudly. In fact most loudspeakers only reach the low frequency response while rolling off.. so, much quieter than the rest of the flat line of the nice part of the speaker response.

That said, look nowhere else than REL.

REL has a site where you indicate your loudspeaker, room size and select Stereo/HT or both. In return they tell you what is the adequate REL Sub.

I could not find the Salon 2 on the list. That said, I advise you contact REL Support and ask them: What is the best REL for my Revel Salon 2 on a medium to large room in a stereo setup. They will let you know what REL matches nicely.

I have a pair of Dynaudio Heritage Specials and they recommended the REL S/510. It was an amazing pairing with my speakers and I feel no regret. It was the best decision to get the bass I like. Also, look at room treatment... at least absorb the first reflection points and if you have access to a expert ask where to install diffusers. I have a rather smallish room and absorption was all I needed to improve a little. The room feeling quiet also helps with focusing on the music.

walk around the room, the bass is likely there. the trick is getting the bass and listening seat in the same place. If you figure that out you can name your own price.