Could someone help figure out a setup?


Hopefully it's okay to ask for help here

I'm very new to computer audio, but since I work on my computer 11 hours a day minimum, I'd like a system finally. Definitely looking for some deep, loud bass, but not looking to go insane with it. I'm thinking maybe $650 max for everything, but I'm also not sure where to begin, simply because many of the higher end speakers I'm finding don't plug directly into my computer (hence why I am reaching out).

If anything, I'd go with some speakers first and get a sub later with a different savings amount, so if I really HAVE TO go above $650, then I guess I'll have to.

What information would be needed from me to help determine what would be best? 
crackthesky
$6500.00 for speakers and a subwoofer is very inexpensive. Like I said what you are looking for Best Buy has and you can go listen and pick out what you like. For background music I use Sonos gear. A pair of Fives and one Sonos sub cost $1700.00 They make powered speakers for $400/pair but the sub is $700. Best Buy carries Sonos and several other brands. 
Thank you everyone for the replies.

As many there seems to be more votes for AudioEngine, and everything looks good there, I believe I will be going for them.

I see people mention a DAC, which I’d be willing to buy if it’s the smart thing to do. Would I just connect my SPDIF output on my motherboard to this DAC? The one mentioned by Fuzztone does have an optical input.

Mesch mentions a sub from Dayton Audio being another option then the sub from AE.
DA sub is 15" but only 150 watts while the sub from AE is only 8", but 250 watts. For deep, clear bass (hopefully in most of the main ranges in metal and rap), is the 15" a better choice?

Lastly: I see AudioEngine also has a "Desktop Amplifier". However, I cannot use this with speakers that are already powered, correct?

Also, I do already have speaker stands and foam speaker padding ready so those would sit beside the desk with the sub on the carpeted and padded floor.
I hope bumping is okay on this forum. I've been unable to get help with this on other sites, or even from the companies themselves so I'm kind of stuck.

My main question before buying is

"Mesch mentions a sub from Dayton Audio being another option then the sub from Audio Engine.
Dayton Audio sub is 15" but only 150 watts while the sub from AudioEngine is only 8", but 250 watts. For deep, clear bass (hopefully in most of the main ranges in metal and rap), is the 15" a better choice?"

Links to both in case anyone needs it

Dayton Audio SUB-1500:
https://audioengineusa.com/product_tech_specs/s8-powered-subwoofer/

AudioEngine S8 sub: https://www.parts-express.com/Dayton-Audio-SUB-1500-15-150-Watt-Powered-Subwoofer-300-634
As far as I know Parts Express offers different Dayton subs(8", 10", 12" and the aforementioned 15"). If you purchase the Audioengine  speakers then you might do well with the Audioengine sub.   

At your budget my suggestion would be to purchase the powered speakers 1st and a DAC that will mate to your SPDIF output, optical or coax. Consider the sub at a later date.