Of course manufacturers have the equipment and measure their speakers, in many cases exhaustively, in the privacy of their own premises.
But If manufacturers published measurements you can bet they will be falsified or taken under optimum or artificial conditions. So there would no, indeed negative, purpose to it.
Almost every speaker company publishes sensitivity figures and almost all exaggerate, some by up to 5dB.
Most companies are dishonest these days. Think Volkswagen pollution, all car companies miles per gallon tests, the banks and insurance companies, inflammable building cladding in the UK, etc etc.
Best just to let John Atkinson do it. And I doubt the equipment he uses costs more than $1,000 or so. Including the 'cheap plastic tape accelerometer' that reveals cabinet resonances.
But If manufacturers published measurements you can bet they will be falsified or taken under optimum or artificial conditions. So there would no, indeed negative, purpose to it.
Almost every speaker company publishes sensitivity figures and almost all exaggerate, some by up to 5dB.
Most companies are dishonest these days. Think Volkswagen pollution, all car companies miles per gallon tests, the banks and insurance companies, inflammable building cladding in the UK, etc etc.
Best just to let John Atkinson do it. And I doubt the equipment he uses costs more than $1,000 or so. Including the 'cheap plastic tape accelerometer' that reveals cabinet resonances.