Using the una corda pedal in loud, pedalled moments

[wnlqxod]

This video got me thinking about using the una corda pedal in loud moments with the damper pedal.
Around 04:30, he has some clever pedalling there.
I have uesd the una corda pedal to help me provide more contrast between piano and forte (thank goodness I have the una corda pedal, otherwise things like Chopin's first two etudes in Op. 25 would sound too loud from the start), but,
what acoustic effects do you get from using the una corda when playing loudly?
Does it help acquire a crispier texture when things get loud and sustained or something?
(I can certainly see how "loud, damper pedal down, but crisp" can come in handy in some moments)

[j_menz]

what acoustic effects do you get from using the una corda when playing loudly?
Does it help acquire a crispier texture when things get loud and sustained or something?

On a grand, quite the opposite. On an acoustic, it's a "soft" pedal, not an una corda, and results may be different.

For the result you want, try a more detache/staccato touch.

EDIT: You could also try half pedalling.

[wnlqxod]

Are you saying that using the una corda in loud passages involving the damper pedal can actually help imbue thicker texture  ?

[j_menz]

Are you saying that using the una corda in loud passages involving the damper pedal can actually help imbue thicker texture  ?

Indeed I am. The una corda pedal (and I mean a proper one, on a Grand - NOT on an upright) not only makes the note softer, but changes the decay patter of the note, so it decays less abruptly. If you play loudly, it will create a more pronounced sustain and a greater range of louder over and undertones. Result, much thickrt texture, tending to muddy very quickly.