I've never listened to them, but if I recall correctly, the Salons are not a very efficient speaker.
Regardless, a speaker of the Salon's caliber can always use more power unless your already have about 700 wpc. The 200 wpc that you currently have is probably minimally sufficient. Though, some may say 50 wpc is enough.
Isn't the Dreadnaught a 5 channel amp? If so, and if the Salons are bi-amp'able, why not give that a whirl?