[EDIT: MJJJ beat me to it, but we're like minded]
Fritz Brand wrote
Now is it 250W or 500W, as in when the Laney says 300W is it CONTINOUS or PEAK?
It's RMS, which equates to about half of peak and is a much more meaningful spec. when comparing ? The Wharfedale says "Continous RMS", which is meaningless, but from the peak spec, I think they actually mean RMS.
Another thing to note is that the Wharfedales are Bi-Amplified with 250W on the woofer and another 50W on the HF driver, totalling 300W and will be more efficient as well as likely have a better sound quality. All pretty meaninless, because there are so many other factors to take into account like speaker efficiency. Best I can say is they are in the same ballpark power-wise, and that the Wharfedale looks like the better quality.
most places supply their own PA isn't it?