Thanks for the exlpaination! This means that lighting fixtures are measured more accurately as speakers? Funny. Now i start to understand from where all this subjectivity cult in the audiophile world comes from.
sensitivity question
A few questions regarding sensitivity.
a speaker with 90db sensitivity means roughly that it will deliver 90db at one meter distance at 1W right?
But if I’m not wrong most speakers are emitting more sound towards the drivers direction. In some way they resemble a light bulb+projector which emits light toward one specific direction. Obviously with speakers the "projector" effect is not as pronounced as with a lighting projector however the sound is mainly emitted toward one specific direction. With light bulbs which have a projector, in order to describe correctly the emitted luminous flux, you have to add the light cone degrees. In fact a spot light which opens one degree and consumes one watt delivers at one meter more lux as a light bulb of 100W at one meter which opens 180 degrees.
Wen measuring the sensitivity of a speaker do they measure only the db at one meter from the front of the speakers or do they make 8 or more measurements at 1 meter around the speaker and calculate then the medium sensitivity? If not is the actual sensitivity measurement not strongly lacking in accuracy? And in a audiophile world which has measurements in such a high regard is that lack in accuracy not wired? Thanks for any info!
a speaker with 90db sensitivity means roughly that it will deliver 90db at one meter distance at 1W right?
But if I’m not wrong most speakers are emitting more sound towards the drivers direction. In some way they resemble a light bulb+projector which emits light toward one specific direction. Obviously with speakers the "projector" effect is not as pronounced as with a lighting projector however the sound is mainly emitted toward one specific direction. With light bulbs which have a projector, in order to describe correctly the emitted luminous flux, you have to add the light cone degrees. In fact a spot light which opens one degree and consumes one watt delivers at one meter more lux as a light bulb of 100W at one meter which opens 180 degrees.
Wen measuring the sensitivity of a speaker do they measure only the db at one meter from the front of the speakers or do they make 8 or more measurements at 1 meter around the speaker and calculate then the medium sensitivity? If not is the actual sensitivity measurement not strongly lacking in accuracy? And in a audiophile world which has measurements in such a high regard is that lack in accuracy not wired? Thanks for any info!
Showing 3 responses by daros71
That’s’ a ridiculous leap.I think the sensitivity of a speaker, as measured and stated by speaker manufacturers, is only appropriate for headphones. For speakers it is 100% wrong. It simply doesn’t describe the amount of db reverberating in your space. If you measure something and you measure it incorrectly, that measurement won’t help you describe the world objectively... and then, since we all have different experiences despite the same measurement, you’ll say it’s all subjective in the end. P.S. i don't say that a correct sensitivity measurement will reveal the overall qualities of the speaker. I want only to point out that in hifi even the simplest measurementes, like the sensitivity of a speaker, are gathered in a very discutible (or subjective) way. But is a subjective measurement useful? |
Are you sure? This guy for example( https://geoffthegreygeek.com/understanding-speaker-sensitivity/ ) is stating that the sensitivity measurement should describe how loud a speaker will sound given a certain input. I only say that this is wrong, that the sensitivity, as it is measured now, do not describes how loud the speaker will sound until you do not include the off axis sensitivity. Moreover a speaker which has a 20 degree sweetspot (i’m not sure if the sweetspot is the correct indicator) which measures 90db sensitivity will sound less loud as a speaker which measures 88db and has 60 degree sweetspot because the second one simply moves much more air, which soon or later, after reverberating in the space, will reach you ears. Only in an anechoic chamber you will hear this 90db at 20 degree sweetspot speaker sounding louder as the 88db 60 degree sweetspot speaker. Buth woh is listening music in such circumstances? No one. To me the actual sensitivity standard is very blurry. But if you are happy with it... |