below, i attached a pic of my desk.
Do you think i can learn to mix with my Hd600 and small logitechs in my untreated room. Or would it still help to have monitors like dyna audio or genelec?
Or unnecessary in that space for now?
If yes, 7 inch or 5 inch? for acoustic rock folk music.

Try to move from that corner onto the center of the wall as much as you can.It obviously doesn't matter if you mix on cans, but it matters if you're using monitors.

Would it help to mix on monitors? Yes! Buy whatever fits your budget and if you invest a little time and money on some acoustic treatment (there's tons of info about it all over the internet) you're definitely on the right track.

Cheers,
Andrei

You can certainly learn to mix on headphones. Bigger speakers might be nice to have to give you a second input to your mixing decisions. I have two pairs of headphones - one open and one closed. The closed ones (DT770 Pro) give more bass which makes it easer for me not to add too much of it. With the open-back ones (AKG K-701), I tend to overcompensate the bass, and it end up being too much.

I find it helpful exporting the audio and bringing it into the car. Comparing radio music with my mix and listen to my music with something familiar.

Also, listen to other song which you really like and try to match the frequency contents (balance) to your songs.

Dynaudio, Genelec, Neumann, HEDD, EVE Audio, etc. will all do a formidable job sending out sound waves accurately. Ultimately, what you will hear the most is your room, not the speakers. Probably does not matter too much what you choose. Untreated rooms all suffer from big peaks and nulls at low frequencies. At one spot you hear certain bass frequencies very loud and in some spots there is almost no bass at all. Maybe you can find a spot where it sound OK? I would go for the bigger speakers (since you already have tiny ones) and build some bass traps DIY-style. There is an acoustics subform on GS, where you can find info on how to construct them yourself for very little money.

great info, thank u so much. 5 Inch seems cool for me price-wise and dimension-wise, a good engineer said 5 or 7 are enough.

My studio is a 12x12 untreated room. It’s full of gear, so there’s not much reflection going on at all. I’ve been using Yamaha HS-5’s for the last 4-5 years and would often run to my car to check my mixes, but I snagged a pair of Beyerdynamic 990’s (250ohm) and after working on a couple mixes since, if I bounce between the HS-5’s and the 990’s, by the time I get to my car it’s about 98% where I want it to be.

I’d say as long as the monitors and headphones aren’t drastically different, you should be ok. If one is causing you to make aggressive EQ changes that sound like sh*t when switching to different speakers, you’ll be making a lot of trips to the car!

Some monitors are better suited for bad rooms.

Maybe something like iloud micro or iloud mtm?

My current Presonus Eris E5 are OK for bad rooms, because I have a ton of settings on the back to compensate for placement issues, but I am thinking iloud monitors when I see your room.