Harbeth 'amp friendliness'?
My reply was most definitely not directed at you Ted. It was abundantly clear to me that you were merely passing on hearsay.
Originally Posted by Ted Rook
I've heard the comments a couple of time about 'difficult load', 'not easy to drive' recently and on the surface it looks like a technical comment, but upon investigation, there is no basis to it at all. I suspect that, as average sensitivities of speakers generally have edged up (at the expense of sound quality) perfectly respectable mid-80dB sensitivities look, on paper, to be moderate. However, Watts have never been cheaper, sensitivity tells you nothing at all about sound quality and I value my hearing anyway.
I've tried to make clear that, as the designer, I am acutely conscious that Harbeths (with the exception of the three way M40 which is a special case) must be designed as an easy electrical load. And indeed they are. I just wish such commentators could see the extra strain that the need for an easy load creates in the design process. It really adds hugely to the mental effort because it closes-off so many circuit design approaches (which would result in very low or reactive impedances) and demand the highest ingenuity - right on the edge of your working knowledge.
Alan A. Shaw
Harbeth Audio UK