Uneven soundstage help, please.


I've got a pair of ATC SCM40 v2's driven by a Musical Fidelity A308 (plenty of power) and overall I'm happy with this combination, given my budget, wife, and listening habits. My system is in an incredibly complex large room, with all sorts of variables in terms of reflection, absorption, etc. And these aren't exactly the same from one speaker to another. I have no choice about speaker placement, given the room configuration.
There's a phenomenon that concerns me, though, that I haven't been able to resolve. In order to get the center centered, I need to position the speakers and listening chair in such a way that the soundstage extends all the way to one speaker, but only three-quarters of the way to the other. It doesn't sound out of whack. It's just a narrower field than I had with my older KEF References, and I wonder if it would sound even better if this was resolved.
Has anyone else faced and solved this? What factors are driving it? I've been living with it comfortably, but I wonder.
Thanks ahead of time for any replies.
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To re-state the obvious there are many variables that can affect system channel balance. For years I wouldn't be caught dead owning a component with a channel balance control. Now, with age advancing and a mild hearing loss in one ear the balance control is my friend...
I had the same problem with an uneven soundstage because one of my speakers is encased in the wall corner, my small room being irregular...Playing with the balance button was not a very great solution....I was thinking also that i was poperhaps a bit deaf from one of my ears... 😊

This was the problem which set me on my experiments path in the acoustical embedding of my system in my room...

I optimally solved it with passive materials treatment , looking for a balance equation between absorbing surface, reflective one and diffusive volume and surface...
And with active embeddings controls with Schumann generators linked to resonators grids...( my resonators were bought for peanuts because they are not audio products)...


Then there is a solution, this is the good news...But my solution takes me 2 years to create it and with a complex grids of devices...

The bad news is i dont know how to adapt my solution to a normal living room on the critical eye of any wife...

Alas! my cheap cost solutions and devices are not adapted to a living room esthetically and i am pretty sure that no wife will acept them....

I am lucky enough to have a room solely dedicated to my audio system... At least know that solution exist, certainly some better than mine esthetically...


I wish you the best to come...


« What the hell all these cables  and weird bling-bling devices do in this room? They make one of the corner disapear  my dear »- Groucho Marx husband and acoustician
There’s several EQs for sale on Audiogon. If you don’t have tape monitor buttons you can hook up an EQ between your favorite source and the integrated pre amp. 
I will never live without this Chase Remote Line Controller RLC-1.

I have used one for many years in main system, now also in my office system, and a spare on the shelf downstairs.

Absolutely quiet, Signal to noise is 105db, it just does it’s job.

Open Box, seller takes returns:

https://www.ebay.com/itm/Chase-Technologies-RLC-1-Remote-Line-Controller-RLC1-Upgrade-Any-Stereo-NOS...

Adjust everything from your listening position.

1. remote volume, a wonderful thing
2. remote balance. this will solve your room’s imbalance, and even if your room and listening position was perfect, sometimes certain tracks benefit from a speck of balance. It is surprising how much benefit can come from a small balance adjustment
3. loudness compensation. essentially bass boost at low volumes (boosts highs also), to automatically adjust for our irregular hearing at low volumes.

https://en.wikipedia.org/wiki/Equal-loudness_contour

it’s a good thing when used properly, keeps music involving at low levels, rather than just background music.

4. tone controls. I don’t use them, but you might try, it cannot hurt. It remembers your adjustments which is great. On/off by remote, no controls on the unit. Unplug, plug back in, everything back to factory settings if you cannot remember where you left it for instance. I have easily accessible on/off switch for that as my memory sucks.
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Toe In. When I want a wider center for 2 people, I adjust my toe in, aim the left speaker at the right position, aim the right speaker at the left person. That works like this: you are closer to one speaker, but you get direct sound from the one facing you from the other side. It balances out, a wider center image for 2.