Dynaudio C2 II Signature VS. Revel Ultima Studio 2

I agree with the C1 + sub route, or one like it. My C4's are in a 16' wide x 40' long x 9' high room (big volume) and they sound very good except I would give them a "pretty" good down low. The bass response is uneven from 30-60 Hz (big dip) that seems to plague a lot of rooms. Two subs can help you tune this better by moving the subs around independant from the mains, which are placed to image the best (not to improve the bass!). And, most subs can be tuned by EQ. I'm looking at subs for my C4's for this reason!

As for volume, most speakers in modern hi-fi (no tone controls at all!) sound best when they exceed the fleetcher munstrum (spelling?) pressure level in the bass. This is the point where your ear becomes linear across the typical sound spectrum humans hear. The C4 seems to become "flat" in the bass around 80-85 dB to my ear. So I agree, that this speaker needs to voice some. But, if a speaker sound good low, it's probably too much bass turned up. Your ear loses a lot of sensitivity to bass at low volumes, so to sound good quiet, it's really not "flat"in the bass, and remains so as you turn them up. Such as it is without any variable SPL control anywhere.

Get what sounds best where you listen the most. I listen at 80-85 dB average SPL most all the time.

Signature upgrade is;

"The crossover has been further optimized, while the internal wiring has been upgraded. With these upgrades, the second-generation model designations are now Confidence II and Confidence Signature."

"The Confidence Signature models are exclusively available in dark-brown Mocca or dark-red Bordeaux realwood finished with high gloss piano lacquer and proudly feature an aluminium backplate plate adorned with the signature of Dynaudio's founder and sole owner, Wilfried Ehrenholz."

My C4 signature II models do fine at low volumes. The older C4's are reported to be harder to make come alive. But, I can only report on my series II models. I listen at 80-83 dB average, and things are just fine.

Bass is tight and actually could be MORE pronounced in my book. I added stereo DD10+ subs to get the very bottom firmer and effortless sounding. It worked out real well. But to say they are boomy? I haven't heard that at all. The Dyn Audio sound is much more neutral than most speakers. Some don't like that. I like it...fast, open and dynamic. Midrange is especially intoxicatingly good on C4 series II's.

The C4's will really be hard on your electronics and source material, though. You will hear differences in electronics like never before. Source recordings are ALL different sounding, too. Resolution is WAY better than any speaker I've used in the past. Some will say this is a bad speaker since it says things are poor when they are. Many don't want to "hear" that. I don't, but I can't blame the speaker.

I took actual room EQ dB values and they are commendably flat. Remember, bass can be tricky to measure because of room nodes. Stand in the right place and it's flatter, or not. But the overall tone is NOT tubby.