On Friday, October 30, 2015 at 3:48:17 PM UTC-5, wrote:

Anyhow, I'm a little concerned about using speakers that run off USB
power, and having my system crash because of high power requirements on
peak music output levels..... Just a thought!!!

You're correct...you should avoid USB and adapter powered unless you have minimum requirements. I bought a Logitech w/sub (p/s built-in) for $5 at a garage sale.
[Max. current: 0.5 A (USB 2.0), 0.9 A (USB 3.0 & 3.1)]