Dennis Had Inspire Amps

[Musica Amantem]

Originally Posted by Rosco65

There are two issues with stated efficiency:

1. Credibility of the source. We are required to trust the manufacturer's stated efficiency on its face. That is fine for those who are honest about their efficiency ratings, but for manufacturers who like to stretch the truth they can make any assertion they like.

2. Conditions under which the stated efficiency is measured. Sadly, most manufacturers do not couch their efficiency figures in standard terms. That means providing both the frequency range and bandwidth (e.g., +- 3dB). One speaker I own is rated for 94dB efficiency and 8 ohms impedance. However, in reality this speaker is only 94dB efficient from 500hz to 5,000hz. If we were to require it to be measured from 100hz to 10,000hz the actual efficiency would be closer to 90dB -0dB +4dB.

Your Tektons may be 98dB efficient over some point in their frequency range, but probably are less efficiency over the frequency range most of us would consider "full range"

Yes, I'm aware of that, and thanks for your thoughts, but based on my familiarity with them, I do not believe the difference is 6 dB. After all, that would imply doubling power requirements twice in a row (binomial exponential). No marketing scheme could mask that reality. Tekton's niche is with medium-powered amps (at least those speakers rated at 98/1W/1M @ 8 Ohms). Based on another pair of speakers I use alternately, my best guess is my Tektons have a net avg sensitivity of 95 dB.