i would agree if each shelf holds 22 lbs, you add up because the weight is being distributed among (X) amount of screws. 

Personally, I would never recommend having something that heavy relying on just drywall anchors. Especially for electronics, I'd be overcautious and make sure I have support from studs for this. I would rather have a shelf wider than what I need to ensure I hit studs, or cut out some drywall and add blocking between the studs and do a nice patch job.

You could also add plywood anchored to studs, painted to match the wall.  Then mount your shelf to the plywood

bill1024
Stud finders are cheap these days. Find the studs and drill into them.
You can softly tap the wall with the end of a screwdriver and listen, you can tell you are tapping over the stud when the sounds changes, it gets deeper.
16-18 inches from the corner there should be a stud, when you find it then they are 16in center to the next stud.

Oh no, I have a stud finder. I hang stuff on my wall all the time, However, I was wondering because of the amount of weight and where it might not be possible to use the studs. I'm going to use the studs even if it doesn't look centered ( Ughhh ) lol better safe than sorry. (Speakers will be centered, So will the shelves, Just not the tracks.)
 

Cool GTX
You could also add plywood anchored to studs, painted to match the wall.  Then mount your shelf to the plywood

 
I've done that before, But if you remove it it screws up the whole part of the wall behind it, sort of like moisture being there. Matter of fact, I have one placed like that and it's been up for like 6 years, Scared to take it off lmao!

You could always think about painting the track to match the wall colour. That will make it blend in quite a bit. With everything else going on in front of it, you probably won't notice them unless you're really looking for them.

So I ended up using 3 Tracks! The reason being, My stud finder marked wood (It's old), I leveled the first one and marked my screw holes, None of the 3 screws hit a stud, So I used 24LBS rated Anchor/Screw combo. Then I decided to purchase a brand new stud finder, seeing as my old one wasn't working properly and the new one I bought works wonders. It marks the left and right side + center of the stud so you can hit it directly in the middle of the stud. screwed in the right side track to the stud and purchased another one, Measured 32" to the left of it and double checked with the stud finder, installed the 3rd track on the stud, So 2 Tracks on stud, 1 on drywall with anchors.
 
Had the wood cut 14.5" x 34" and they feel really sturdy. I just need to paint the wood black now so it can match the surrounding stuff. Definitely isn't going anywhere anytime soon!
 

 
Edit: It looks off because I centered the receiver/center speaker to the TV and my computer desk is right next to the right side speaker, So I had to push it in next to the shelf.
 
Also, there was no way to center the shelves because the middle track is the one that landed on drywall and I had to skip the stud right next to it, had to go for the one on the left side and the one on the right side of it, Which don't land centered to the TV. This bugs me, But I'll live.
 
Thanks for the help everyone!

try not to drive any motorcycles in the room and you will be fine

In the future you can use toggle bolts on a sheetrock wall like these >> https://www.lowes.com/search?searchTerm=toggler+snaptoggle     or a similar one made by Hilti.  These toggle bolts are rated at 75 to 100 lbs each shear strength on a 5/8" sheetrock wall.  I use them all the time on my jobs.

I like the self drilling type too.
Keep in mind sheetrock screws do not have a high sheer rating.
Heavier screws like the one with the wall anchors or lag-bolts or toggle-bolts have a stronger sheer rating than sheetrock screws.

RushXTC

krane
In the future you can use toggle bolts on a sheetrock wall like these >> https://www.lowes.com/search?searchTerm=toggler+snaptoggle     or a similar one made by Hilti.  These toggle bolts are rated at 75 to 100 lbs each shear strength on a 5/8" sheetrock wall.  I use them all the time on my jobs.

Do you know where I can see a chart for pre-drilling holes to toggle bolt ratio? I purchased 1/4" toggle bolts, But no where in the box or anywhere did it say what hole I needed to drill lol.

Those particular toggles in my post need a 1/2" hole whether it's a 3/6" or 1/4" bolt.

The rating of screws is so misleading, as it doesn't take into account what you are screwing into!
 
For future reference, where no studs are available, the "Toggler" bolts that krane recommended are the best way to go. For "self-screwing" (aka "self-tapping") gizmos, drill anyway (at least a small guide hole); else you risk weakening the surrounding sheet rock while starting process.
 
And best of all is the plywood suggestion. You can hit studs you might not line up with if just using brackets, you can put it extras screws, etc.
 
My studfinder is not much help -- it just keeps pointing at me!