How important is the efficiency of a speaker to you?

Dear @daveyf  : First than all I'm a MUSIC lover and each single week at least I ttend to enjoy Live MUSIC and this " attitude " I have it for the last 25+ years.

I hate to listen the system Hardware and my room/system is builded through several years around nothing less than MUSIC but to enjoy MUSIC in my home we all need some kind of source/hardware.

I used tube electronics over 10+ years till I learned.

My ADS L2030 " old " speakers has 95db efficiency, no there is no single design problem with:

Vintage Holy Grail ADS L2030 High Fidelity Stereo Speakers and ADS C2000 Control Photo #1889387 - Aussie Audio Mart

The other gentleman ixs totally wrong, maybe he need to talk with J.Curl about that design or learn in other way about that specific design. I really don't care on his post that only shows high ignorance in tha specific regards amps.

R.

@rauliruegas Which other gentleman are you referring to? I don’t think anyone on this thread is totally wrong…except maybe you, lol😁.

just kidding..😎

@daveyf  : Yes, maybe me.

@unsound   " speakers designers have to choose what paramters and associated compromises combine to best meet ultimate design goals. Some if not most of the best measuring loudpseakers have lower impedances, and ergo lower sensitivity. There are a bountiful number of well designed amps that can handle such loads with minimal consequence. "

In total agreement with you.

R.

Again

Speaker sensitivty alone is not an indicator of quality or sonic virtue in loudspeakers.  I can think of other values that might be related to sonic virtue, such as widely varying impedance (in a passive design), high distortion, limited dispersion, inconsistent dispersion across the audio band, etc, etc.  High efficiency is simply an engineering choice made, not an evolution.

Brad       

@rauliruegas I think we need to be more clear as to what we are discussing when it comes to lower sensitivity. There is little question that a lot of great speakers are in the less efficient camp, meaning that they are not in the 100db/w mode, but closer to 85db/w etc., These very same speakers may drop down into the 3-4 ohm load in the bass, which might present a more challenging load to some amp designs, but like pointed out, with a sufficiently beefy power supply, will still work fine. These are not really the speakers that I am talking about here ( not sure about others), instead the designs that are on the market ( or have been on the market) that drop down to 1 ohm or less, and as such, are now presenting a very difficult load to the upstream amp. There are not too many speakers that this applies to, but you might be surprised by how many it does. Plus, many of these designs are from well known ( and respected) manufacturer’s, like the ones in my OP.