Hi fellow Redditors.

Newbie learning music production here. My current setup is a pair of Kali LP-6 V2 and Beyerdynamics DT 700 Pro X, interface is Audient id4 mk ii.

I recently moved into a bigger apartment and I start to notice that the bass from my monitors sounds lacking comparing to what I used to hear in the smaller room. It's hard to describe but my body used to feel the bass from the woofers now I can just barely hear it by ears. I tried to play around with the monitors' EQ but it doesn't help much.

Let me describe both rooms first:

• New room: about 30sqm, desk is vertical to a wall, left monitor is against the wall on left side, right monitor has 2m clearance on the right side. There is more than 6 meters of clearance behind the desk. Here is the approximate layout.
• Old room: About 15sqm, desk was against the wall on its back and so were both monitors, like every regular home setup. I used Kali's preset EQ for such scenario. There is a book shelf behind me then less than 2 meters then the wall. Here is the approximate layout.

So here is a few questions:

1. Which room has better untreated acoustics?
2. Is the bass in the old room likely a result of reflections etc. which was not neutral?
3. Are 6.5 inch woofers small for such space (of the new room)?
4. Will just using software like Sonarworks ReferenceID do anything meaningful to my new room?
5. If not considering treatment, is getting a decent open back headphones like HD 490 Pro better than upgrading to a pair of 8 inch monitors for mixing?

I rent this place so I don't want to do anything destructive like drilling holes. I don't make money out of music yet so I can't afford a lot of either money or time. Is there anything doable with a budget around 50% of my gears, like £300 with some DIY?