room setup suggesion needed

@mijostyn  - I don't think it's an either or situation.  Bass traps help make EQ's more effective.  You can certainly get excellent results in cutting bass nodes with an EQ alone, but traps may help smooth out the bass in more areas on the room than just one, as well as make it possible to fix nulls somewhat better than with an EQ alone. 

The truth is it's often a matter of money and space that determines what we use.  EQ's are relatively inexpensive, and easy to hide.

@erik_squires Not my EQ Erik. Retail is now $15,000. Eq will not smooth out the nodes. It will flatten the frequency response at any given location in the room at the expense of a lot of power. Can you tell me what an 8 foot tall bass trap is going to do with a 32 foot wavelength? 

Low frequency sound waves are extremely powerful. 20 Hz at a very reasonable 80 dB will cause your entire house including the garage to buzz and rattle. Try trapping that. 

@mijostyn you are very correct 80 db at 25Hz from generator at my place is definitely loosing screws and retracting nails from lumber.

Again you are right, if anything than low headroom is my biggest challenge of them all. I do believe I have power and speakers to amplified that room with no problems, however finding perfect rehearsing position its becoming an issue.

I’m leaning to your opinion related to 8ft ceiling.

Square rooms are tougher, acoustically. Consider the possibility of working a corner as the "center" of a stereo pair (as well as moving the speakers out from the "front" wall). Because you’ve referred to "rehearsal" space several times, I’m assuming you are playing instruments in the room with or without the hi-fi accompanying.

Jim Smith’s book isn’t a bad place to start. Measurements are good but only as a starting point.

I’ve had the same core components for a while, moved across the country, different room, different layout. Huge difference in sound (the current room sounds better than the old one).

I don’t use a ton of acoustic treatment, mainly bass traps. Sonics are good, not only at the "sweet spot" but in seating pretty close to the back wall (which is filled with LPs).

I’m no guru, just a longtime hobbyist.

PS: I DSP'd my subwoofers, which do not run through the same circuit as my main loudspeakers (horn type, which solves some issues and creates other issues). 

@grislybutter budget has nothing to do with the acoustics, its simple rules of proportions. Either you have it or not. How much you paid for it or how old it is, is irrelevant.

It is very simple, every concert hall has specific size shape and proportions, stage to audience, for instance full set philharmonic orchestras can fill room in ratio 3/1 where 3 is audience and 1 is orchestra. Now if you take quartet or duo they can do ratio 20/1 but in order to keep those proportions the adjusting size of the rehearsal room.