Rega RS5 - Frequency Response

Does anyone know the frequency response of the Rega RS5 loudspeaker?

Their web site only lists the following specs for this speaker:

Height (without spikes).................830mm
Depth at plinth.........................330mm
Width at plinth.........................246mm
Weight...................................12kg
Nominal Impedance.......................6ohms
Sensitivity.....................(Approx) 89dB
Bi-wirable/Bi-ampable.....................yes
Power Handling...............110w per channel