The air pressure between Leadville and New York City can vary by a lot. Does it affect loudspeakers? It should but by how much?
Pressure & temperature gradients mainly affect the propagation (and speed) of sound, not sure what they do to the loudspeakers that make the sound.
Speed of sound is Independent of pressure.
Temperature and humanity will change it.
Can be somewhat observed in most basic models.
Since there is correction factors for humidity and temp.
Voice coil temp rise will have a bigger effect.
not much to do about it.
Other than leave it up to manufactures for voice coil thermal management.
Or vent the enclosure
Of course most indoor environments are temp controlled
Temperature and humanity will change it.
Can be somewhat observed in most basic models.
Since there is correction factors for humidity and temp.
Voice coil temp rise will have a bigger effect.
not much to do about it.
Other than leave it up to manufactures for voice coil thermal management.
Or vent the enclosure
Of course most indoor environments are temp controlled
However, pressure variations could cause temperature and wind flow that, in turn could affect the propagation of sound.
Humidity possibly, but that was a good one !!! 👍
Sound is air pressure change, not an absolute value. So the sound in Leadville vs NY should be the same. Still the speaker working against lower absolute pressure should have easier job.
On the lighter note, all those sound effect in star wars and star treck movies happening in the vacuum of the space...utter nonsense.
Would it change the woofer alignment? A sealed enclosure would have to be smaller at altitude. It may be insignificant but I think altitude changes it.
Barometric pressure is 12% lower in Denver.
Barometric pressure is 12% lower in Denver.
From Stereophile:
Under Pressure: Loudspeakers at Altitude
https://www.stereophile.com/asweseeit/590awsi
Under Pressure: Loudspeakers at Altitude
https://www.stereophile.com/asweseeit/590awsi
That's a good article but has one flaw. They assume their measuring systems perform the same at different altitudes. Where small differences are concerned, that's a dangerous assumption to make. It may be true, but needs to be tested/proven.
So, loudspeakers are 0.8-0.9db quieter at altitude. Must be why I have to turn my headphones up on the airplane. 😁
This confirms what I was thinking, there is an effect, but it’s doubtful that anyone can hear the difference. Interesting that they say it takes more power to get the same volume. I used to go elk hunting in Colorado and it seemed extraordinarily quiet when I was up at 10,000 feet.
I guess the difference on woofer alignment and vent design is trivial unless you are on Mt Everest.
This confirms what I was thinking, there is an effect, but it’s doubtful that anyone can hear the difference. Interesting that they say it takes more power to get the same volume. I used to go elk hunting in Colorado and it seemed extraordinarily quiet when I was up at 10,000 feet.
I guess the difference on woofer alignment and vent design is trivial unless you are on Mt Everest.
The sequence of the acoustic waves (timing) from the speakers will be about the same regardless of velocity of sound in the room. If you listen to a recording at 10,000 feet it will sound the same as at 0 sea level.
As has been stated earlier, presure (temp & humidity to a smaller extent) definitely makesfor changes in how aloudspeaker works.
This was critical to work matching drivers, any batch of drivers being matched have to be measured the same day. Next day they sould/could be different. That implies that speaker alignments change.
In the extreme case, a speaker in a vacuum produces no sound.
dave
This was critical to work matching drivers, any batch of drivers being matched have to be measured the same day. Next day they sould/could be different. That implies that speaker alignments change.
In the extreme case, a speaker in a vacuum produces no sound.
dave