As @viridian eluded to, the sensitivity rating of your speaker is a main ’matching spec’ to a specific amp output.
Need help matching speakers with amplifer
I have a pair of Boston Acoustic Vr-20 floorstanding speakers. Im not sure what the RMS continous power rating of these speakers are in order to make the best match with an amplifier. In Hi-Fi Engine the spec’s just say recommended Amplifier 15-200 watts at 8ohms. is this saying the continous is 15 and the peak is 200. I would think the continous would have to be more than 15 watts being these are larger floor standing speakers. Thanks for help from the community!!