Without downloading all the specs, are the speakers in psr 775 different than a 975? Are those in a Korg pa700 different than a pa1000?
Hi, not sure about the korg,
but there appears to be a difference in the 975 vs 775.
The Dome must make the difference?
Psrs 775
15 W x 2
Speakers 13 cm x 2 + 5 cm x 2
Psr s. 975
15 W x 2
Speakers 13 cm x 2 + 2.5 cm (dome) x 2