I would first reconsider such low power with small speakers. The specs on the LS50 are that it's only 85 dB sens. I wouldn't use anything less than a 40 w PP tube amp and even then you won't get a lot of volume.
I think most compact speakers have rather low sensitivity, larger cabinets and drivers often contribute to greater output per watt.
I would estimate you would need around a 92 to 94 dB efficient speaker to get decent output in a small room with 8 watts, that power is more appropriate for single driver speakers like Omega and Zu.
I think most compact speakers have rather low sensitivity, larger cabinets and drivers often contribute to greater output per watt.
I would estimate you would need around a 92 to 94 dB efficient speaker to get decent output in a small room with 8 watts, that power is more appropriate for single driver speakers like Omega and Zu.