My room measures 5.6 m X 6.5 m and I use TAD CR-1's which fill the room with music!
The CR-1's are 8' out from the back wall and 5' from each side wall (measured from the front driver centres). I sit 12' from the speakers, forming an Isosceles triangle. Bass response is smooth, even and well-extended.
I think that the dimensions of your room (a long, thin rectangle) will throw up some problematic nulls and peaks and will require careful positioning of speakers and listening position to achieve a satisfactory bass response.
Apologies for the delay in replying,...have been off the forums for a few days. My room measures 16' x 24' (4.877m x 7.32m, approx. 35.7 square meters) with a long hallway and staircase down to the 1st floor that allows for some breathing room for bass expansion, etc...Not an ideal shape (open on both sides would be better) however the R1s sound open, spacious and not too big for the room. They are extremely efficient so it does not take much to fill the room and the rest of the house downstairs and up with music. I have my speakers along the long wall as opposed to firing down the room the long way due to an architectural alcove on the left side of the room with a double-slope roof cut-out (or whatever you would call), they are positioned 3 feet out from the long wall (measured from back of speaker so front baffle of speaker is five feet out from back wall...). The benefit I have placing them on the long wall is they have a lot of spacing from any side walls and as I mentioned, ample space from the back walls so the image is huge in all 3 dimensions, very spacious in sound, depth, etc... Out of necessity (WAF), my room is untreated so the only side-effect of my room is an issue with some bass pile-up (1 very narrow 'Q' centered on a specific frequency ) in that that irregular alcove on the left side which I've mitigated best I can under the (WAF) circumstances I must live with.
Your room is a bit smaller in squared meter area, but I think that if you are sure to place them out from back walls and side walls (and possibly treat the room if you are able minimally), you can fit them into the room and be extremely happy. The CR1s are also clearly an option but you'll need 1 sub and possibly 2 for best results (I like RELs due to the way they integrate into the high-pass directly off the amp's binding posts. I don't need subs with the R1s as they are flat in my room down to 21-22 Hz but if I went back to subs (or had the CR1s), I pick up a big REL, or 2, very quickly. I have several people I know from the forums who have the CR1s and are very happy with them. Most have also heard the R1s and had to choose the CR1s for one reason or another; all have told me and/or posted that they'd have the R1s any day if their situations could provide for them (money, room, etc....).
Here is my system with some pictures further down the thread;
Thank you for your message! First, i see that you use a REL sub: does it mean that without the sub, bass extension is not good enough? Second, your amp deliver 350W. I was told that the CR1 need a powerful amp to work well. Was it your feeling? Did you consider other options? Best regards
Thank you for your message! First, i see that you use a REL sub: does it mean that without the sub, bass extension is not good enough? Second, your amp deliver 350W. I was told that the CR1 need a powerful amp to work well. Was it your feeling? Did you consider other options? Best regards
You are welcome! I have not had a subwoofer since about 2011 though I have owned multiple subwoofers in the past (Mirage OM-200s then several RELs including the B1 Britannica). I don't need a sub with my prior speakers (Legacy AERIS and before them Focus SE) nor do I need one with the R1s in my room and as I have the system cabled up.
My Esoteric A02 amp puts out 200W into an 8-ohm load, 250W at peak, 400W into a 4-ohm load, 500W at peak (the TAD R1s are a nominal 4-ohm load) and 800W bridged and a 1000W at peak bridged.
The damping factor is > 1,000; this amp is one hell of a performer and I've never found its limit even with the most dynamic material and SPLs in the room. It EASILY drives the R1s from the most
delicate passages to the biggest and most expansive passages you can imagine...
It's 2 gain stage approach and all that it is composed of make it the best sounding amp to me that I've ever owned...