I own Dynaudio Special 25s with Dynaudio Stand4. My room is almost the same dimensions as yours... Sound: Very deep and tight bass for standmount speaker( in-room to ca.25Hz!), natural midrange and extended highs. Rest of the system is ARC VT100MkIII/REF1MkII and Esoteric DV50s.
ARC tube combo is doing nice job in taming some forwardness in treble. Special 25 is not very hard to drive-I previously owned ARC VT50 and it drove it without any problems. Confidence C1 is little bit more refined sounding but, without bass capabilities of Special 25.
Also, IMO sub is something like a diversion on coherence provided by these models. I tried REL Storm 5 and it didn't blend well...
ARC tube combo is doing nice job in taming some forwardness in treble. Special 25 is not very hard to drive-I previously owned ARC VT50 and it drove it without any problems. Confidence C1 is little bit more refined sounding but, without bass capabilities of Special 25.
Also, IMO sub is something like a diversion on coherence provided by these models. I tried REL Storm 5 and it didn't blend well...