Bottom line, yes, there’s an alternative to the satellite speakers. You can you whatever sound system you want.
A more complete response is I never liked the speakers that came with the original Tyros. So when I upgraded to the T4, I didn’t include them in the purchase.
When I’m practicing, I use headphones so as to not disturb my wife. When I’m playing for any decent sized audience, I need more powerful speakers. The problem is hearing what you’re playing, as most audience soeaker setups don’t provide that feedback.
Things changed completely when Gary Diamond posted about the Bose L1 sound system. You place this slightly behind yourself so you hear what the audience hears. They’re fantastic, and I’ve used them ever since. More recently, I’ve graduated to a pair of L1 compacts as they’re easier on an aging back.
And, when I upgrade to a different keyboard, I don’t have to change speakers.
Cheers,
Fred
PS: Wow, 9 years ago. Time flies.