This will teach you not to post questions regarding pro audio on a high end audio site :) :) I'm sure the resulting confusion was worse than before the question was asked :)
I was assuming this was for home use, and was going to suggest Wharfedale Diamond 8.1 or 8.2 which have no treble at all. Failing this the Q Audio lower range stuff has a dull sound...
Pro audio gear is typically not laid back sounding unless the tweeters are blown... EQ will change the sound. However if your keyboard is midi capable, you could use it with software that will let you choose the piano sound you like and apply processing to this sound, such as reverb, in the digital domain.
I was assuming this was for home use, and was going to suggest Wharfedale Diamond 8.1 or 8.2 which have no treble at all. Failing this the Q Audio lower range stuff has a dull sound...
Pro audio gear is typically not laid back sounding unless the tweeters are blown... EQ will change the sound. However if your keyboard is midi capable, you could use it with software that will let you choose the piano sound you like and apply processing to this sound, such as reverb, in the digital domain.