"So if you have a speaker of higher efficiency you have a much wider range of amplifiers available! "
That may be true but you only need one and there are plenty to choose from.
There are many ways to tackle the problem effectively.
High efficiency is likley part of the solution somewhere, be it more efficient amps capable of delivering more power in a smaller more efficient package, higher efficiency speakers that require less power to sing, or perhaps even both together, or some middle ground even perhaps.
Lots of ways to skin the cat.
Tannoys and Classic Audio are certainly good contenders, but the there are many possible ways to skin this cat, including use of power subs, especially when already integrated into the speaker design by teh vendor, though adding separate subs can work very well also.
That may be true but you only need one and there are plenty to choose from.
There are many ways to tackle the problem effectively.
High efficiency is likley part of the solution somewhere, be it more efficient amps capable of delivering more power in a smaller more efficient package, higher efficiency speakers that require less power to sing, or perhaps even both together, or some middle ground even perhaps.
Lots of ways to skin the cat.
Tannoys and Classic Audio are certainly good contenders, but the there are many possible ways to skin this cat, including use of power subs, especially when already integrated into the speaker design by teh vendor, though adding separate subs can work very well also.