Low vs high efficiency speaker (the sound tendencies) 

Nat Audio Magma New can drive all of them easy….

The early investigators of sound reproduction modalities took the laws of physics and how the human ear functions into account. See the history of Bell Labs, Western Electric, et al. Why do we reinvent the wheel and call it a "discovery." This has led to many companies arising on dubious claims by marketeers and then fading into the sunset. Those with degrees in engineering do better designing audio equipment than tinkerers, probably because they are constrained by facts that can be proven in the lab. A clever salesperson uses the power of suggestion to sway our thinking.

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I appreciate your video but I can't agree with a lot of what you said. You placed speakers in the range of 80db to 90db and placed them all together in the group of low efficient. That just seemed absurd to me. There is a huge difference between 80 and 90 DB in efficiency. I try to keep all of my woofers (and subwoofers) efficiency at no lower than 85 to 86DB and my midrange drivers no less than 88 to 89. I find a lot of the midrange and tweeters if not higher efficiency can sound muddy or hear distortions. on my smaller woofers I will often use two and couple them together. Larger speakers like 10" and higher I will have no lower than 89 or 90 DB and midrange drivers like 94 or higher. Even if I use a resistor network to bring the midranges down to the level of the woofer they will still sound better and more detailed, etc.. I only see low efficiency drivers on real cheap speakers. Even Subwoofers where they make the efficiency real low including the resonance frequency and other parameters so it will fit in a small box they don't sound as good. Sure they will still play low but not sound musical as larger more efficient speakers, always a compromise. Pretty much all of the most popular speakers for sale with great reviews do not have an efficiency rating lower than 88db/W/meter and that is mostly based on the woofer the other drivers are often higher efficiency but L-Paded down to match the woofer. Often I will use a subwoofer for my woofer and cross over to a lower midrange (6" to 8"at around 200Hz to 1.2kHz and use like a 4" driver with a phase plug for upper midrange and a fourth driver for the tweeter. at 4kHz. Great dispersion.

Bloody hell. You fellers ever get to a live venue and hear what LIVE sounds like? I have all the microphones. And the preamps. And the way of recording the all the instruments,.....oh lord. NOT THIS GUY.

Also high efficiency speakers have less distortion. Klipsch law