Is there any way to enable Casio CT-S1 speakers while headphone output is used?

[kybdsammer]

I like this keyboard so much that I've started to use it in my small setting worship band.  I'd like to be able to hear the Casio CT-S1 speakers when simultaneously using the headphone output to a sound system.  Is there any way to enable the speakers when the output jack is used?  The speakers are really excellent and would be great monitors.  If this is not available now, would it be possible to add this feature in an update?

Edited September 25, 2021 by kybdsammer

[Piano Tone]

That would be a spectacular update if it is at all possible.  I've been using mine with a Bose S1 battery operated PA and it sounds fantastic but even low volume monitoring from the built in speakers would be SO nice!

[Robbbb]

Would really love to see this implemented, or at least a word on if it can be modded internally.

[bkuberek]

Same.

[Luis B]

Same, appears like cannot be possible on CTS1… only CTS500/1000 have that option.

Edited January 30, 2024 by Luis B