How to Improve Subwoofer & Studio Monitor Sound? Fixing Subwoofer Dead Spot/Placement

https://preview.redd.it/8v5qubi9omnd1.png?width=1058&format=png&auto=webp&s=7228aff6d3c68105ee755a15ddfdb325cd43c28d

Here’s a render of my current speaker setup: I have ADAM T5V studio monitors on my desk and a downfiring ADAM T10S subwoofer in the right corner of the room. The problem is that when I’m sitting at my desk, I can barely hear the sub, but when I stand in the corner (blue spot), the bass is much louder.

I’m wondering if changing the subwoofer’s position could help fix this. I can’t move the desk much since all the wall outlets are beneath it, and unfortunately, I can’t place the speakers centrally against a wall like most setups suggest. Any advice on how I could improve the subwoofer (and studio monitor) placement in this setup? Thx