Your room size is pretty good, and the sofa will help a bit with absorption.Timobkg wrote: ↑Tue Jun 22, 2021 8:36 pm The room is about 13' x 21', and is completely untreated - it just has regular room stuff like bookcases a couch and chairs. I'm not going to be doing any professional work, and I have a decent pair of headphones - Philips Fidelio X2. I'd be using the monitors primarily for monitoring - playing along with a drum track or existing tracks.
Given that the room is untreated, does the quality of the monitors even matter? Could I just get the cheap Eris 3.5 and call it a day? Or is it still worth stepping up to something larger and better like the Eris 4.5 or JBL 305P?
Get the best monitors you can afford. Move them around a bit so you can check you're not accidentally nulling anything in a really obvious way.
Anecdotal: I once hired a studio space and my setup sounded terrible, couldn't figure it out at first. There was a vocal booth with a hard door at an angle that bounced back to one monitor. When I realised it might be that, I moved the desk about 2 feet to the right and it made a huge difference. Speaker position in a room really can matter.