Have you looked at
https://www.genelec.com/correct-monitors? It may help.
Note that all genelecs are near field monitors so 2.5m is pushing it slightly, especially if you have a poor room. Here's the recommended listening distance for all of their speakers.
I think 8320/8330 are ideal for desk usage. 8340s are a lot more powerful - and they also recommend pairing it with the more powerful 7360/7370 sub.
Note even my 8330s can get incredibly loud - they're rated to fill a room up to 75m2. In comparison I have a pair of JBL 308ps that I struggle to get loud enough in a room about your size. Here's the db at various distances.
I think in your case I'd probably just go for the 8330 since you likely don't need the extra volume. With 7350 in place the difference will be minimal. And invest in bookshelves, sofas, rugs, plants, anything to help with the reflections.
Thank you, very much for the very informative reply. If I am reading the recommend distance from speakers to listening position chart right, room reverberant sound could be some kind of a problem.
On the other hand, isn`t the SAM-system suppose to remove or at least facilitate this problem?
On the other (other hand), the chart is made for the SAM-system speakers? (using SAM-abilities?).
Feel a bit confused now. 8351B:s, which hit the optimum(?) as distance, are absolutely out of my financial reach at the moment.
Used SPL does not make any difference between 8330 and 8340 to me. As I said in the previous post, I am currently using pairs of M030 and G2. Never had any issues with "not enough SPL thing".
Fast edit, found this from Genelec forum and Ilkka Rissanen.
"ilkka-rissanen, modified 8 Years ago.
Yoda Posts: 2564 Join Date: 3/23/09
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Hi,
The term near field speaker comes from the professional studio world. There can be (typically) three different kind speakers in a studio: near field, mid field and far field. Near fields are placed up close to the mixer, on top of the console. These have to be (physically) quite small in size so that they don't block the sound coming from the far fields which are typically flush mounted into the front wall. Mid fields are between those, typically on stands behind the console.
Requirements for pro audio and home audio can be a little bit different. In the studio, speakers are used to monitor the sound/recording to make it as good as possible, while at home, speakers are used to enjoy that sound/recording, made by that professional. Also typically the listening levels used in the studio are higher than at home. Therefore recommended listening distances for same model are shorter for pro than home.
When it comes to physics of a speaker, it is true that a small speaker works best in the near field, but that applies to all small speakers: active, passive, pro, hifi etc. That is mainly because a small speaker is not very directive and it has only moderate maximum SPL capability. Of course there are ways to improve the directivity, see
Genelec Key Technologies:
Directivity Control Waveguide and
Minimum Diffraction Enclosure. With the help of those, even a small speaker can sound good and natural from a larger listening distance and in reflective listening environment".