I'm wondering if anyone else has noticed this. Since I have perfect pitch, I can't help but notice that just about all canister and clean air uprights sound a lot different than just a few years ago. The motors have a much higher pitch, which probably indicate that they are smaller and in order to create the same amount of airflow, they probably spin much faster. If you compare the sound of the current model canisters by Miele, Sebo, the Riccar Prima, the Electrolux Ultra one, the Panasonic and Kenmores, or the Tacony two motor uprights, the suction motor has a very high pitch. The Dyson motors also sound like this. The last canister I have seen that did not sound like this was the Electrolux Embasador 3. The Aerus classic is not quite as high pitch as some of the other vacuums I have mentioned, but it's fairly close. If you compare today's motor sounds with something like a Kenmore whisper tone, or the Perfect Canister, there is definitely a difference. The sirina vacuum also has a motor that sounds more like some of the older Electrolux models, it's a lower pitch, and sounds a lot larger. I would think it would be more efficient to have larger motors that didn't spin as fast, but the trend has definitely gone the opposite way. What does everyone else think? While they may not have been as powerful, I actually like the motor sound of something like an Electrolux 1205 a lot better than some of these high pitch motor sounds. I wonder if vacuums such as the filter queen have also gone this direction. The newer rainbows still seem to have the classic sound to them, they don't sound high pitch either.
higher pitch, probably smaller motors
- Thread starter n0oxy
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Yes,just that-cheaper,plastic frame motors with smaller fans and running at higher speeds.Gone are the slower speed,metal framed,larger fan motors!I don't like the screamer jet engine motors,either.Jet engines are loud-but have to be-vacuum motors should be quiet!!!
I have noticed it too. I can't stand that high-pitched scream what most of the current vacuums sound. Especially bagless vacuums tend to sound like that. Very annoying. That is the reason why I use old canister vacs with the large twin fan motor = low rpm. Lots of suction/airflow, but pleasing sound.
sebo_fan
Well-known member
When people hear my new SEBO E1 Airbelt or Miele S8340 Ecoline they're taken aback by the lack of noise from each. But then some ask if the vacuums are powerful enough. For some reason average joe equates loudness with powerful-ness. I can't imagine where they would get that from....
vacerator
Well-known member
n0oxy,
maybe the higher pitch sound comes from the new vortex type fans they use.
Unless it's cheaper motor bearings.
Nothing cleans like a dual fan motor, and they were quieter.
maybe the higher pitch sound comes from the new vortex type fans they use.
Unless it's cheaper motor bearings.
Nothing cleans like a dual fan motor, and they were quieter.
eurekaprince
Well-known member
I've often wondered if the acoustics of the plastic containers found on bagless vacs really increases the level of noise these vacs produce. The sound must resonate thru the plastic and the cyclones must also transmit the motor noise into the dust container. In contrast, bagged vacs have a nice cushiony soft fabric bag seated in a sealed compartment under a cover that often has a second layer for tool storage. This can really dampen the noise coming from the motor chamber. Added to this are the filter cartridges seated on both sides if the motor.
With regard to uprights, many of the cheaper bagless models are advertised as having the ability to clean bare floors. Bare floors don't absorb sound waves like a deep carpet does, so these screamers sound even worse on bare floors. The noise is made a lot worse if you can't shut off the brush roll.
With regard to uprights, many of the cheaper bagless models are advertised as having the ability to clean bare floors. Bare floors don't absorb sound waves like a deep carpet does, so these screamers sound even worse on bare floors. The noise is made a lot worse if you can't shut off the brush roll.
kirbysthebest
Well-known member
Noticed that too.
Just last night I was using a clean air plastic upright, and my Mom said "That thing sounds like a Jet taking off."
Just last night I was using a clean air plastic upright, and my Mom said "That thing sounds like a Jet taking off."
two stage motors
I think most vacuums now use just one fan, but spin it much faster. Actually, the Electrolux ultra one is very quiet and powerful, but it does have the high pitch motor sound. Even on some central vacuums, the sound is similar because many of them are using flow through motors now instead of bypass. The Miele and Sebo motors on their canisters actually do have the high pitch sound also, but it's not quite as noticeable for some reason. Here is an example of a good sounding motor, I'm not sure if this was a European model of the Lindhaus HF6, but the current model that I just got also has the high pitch sound.
I think most vacuums now use just one fan, but spin it much faster. Actually, the Electrolux ultra one is very quiet and powerful, but it does have the high pitch motor sound. Even on some central vacuums, the sound is similar because many of them are using flow through motors now instead of bypass. The Miele and Sebo motors on their canisters actually do have the high pitch sound also, but it's not quite as noticeable for some reason. Here is an example of a good sounding motor, I'm not sure if this was a European model of the Lindhaus HF6, but the current model that I just got also has the high pitch sound.
sebo_fan
Well-known member
The reason being is that SEBO and Miele vacs have sound proofing added.
The EU law that stipulates vacuums must be produced now higher with 1600 watt motors may also prove to be worthwhile in the long run; they may make it to other countries regardless of the laws, thus in some cases providing a quieter motor than the previous 2000 watt motors that the previous models had.
And whilst we're on the subject about noise, lets not forget the Power nozzle floor heads that canister vacs have. After all they also make an added noise.
The EU law that stipulates vacuums must be produced now higher with 1600 watt motors may also prove to be worthwhile in the long run; they may make it to other countries regardless of the laws, thus in some cases providing a quieter motor than the previous 2000 watt motors that the previous models had.
And whilst we're on the subject about noise, lets not forget the Power nozzle floor heads that canister vacs have. After all they also make an added noise.
comments on the video
In this video, booth vacuums had the lower pitch, not the shrill high pitch that is so common now. I think the first one sounded a bit better though. With the second one, especially when he turned it off, it sounded like the motor might be getting ready to go out.
In this video, booth vacuums had the lower pitch, not the shrill high pitch that is so common now. I think the first one sounded a bit better though. With the second one, especially when he turned it off, it sounded like the motor might be getting ready to go out.
suckolux
Well-known member
Agree, the coast down is a bit loud I think.
rugsucker
Well-known member
Loud Vacs
Years ago I saw an article that I should have saved but didn't in,I think,Smithsonian magazine.It was about how a college lab was analyzing and reducing noise on a vacuum model for a major company.They were separating the different sounds(suction fan,cooling fan,belt,brush,etc)and trying to quieten each.At the time I wondered if this research led to the changes between Eureka Bravo and the later Bravo II.
Years ago I saw an article that I should have saved but didn't in,I think,Smithsonian magazine.It was about how a college lab was analyzing and reducing noise on a vacuum model for a major company.They were separating the different sounds(suction fan,cooling fan,belt,brush,etc)and trying to quieten each.At the time I wondered if this research led to the changes between Eureka Bravo and the later Bravo II.
Yes that Volta in the video has that strange when the motor is slowing down.
There is one vacuum with very high-pitched sound. It's also very loud to make it worse. Otherwise I don't have anything against the Dyson. This is the DC07 and I believe that they used two different motors in this model.
http://https//www.youtube.com/watch?v=49tKXj1NEPM
There is one vacuum with very high-pitched sound. It's also very loud to make it worse. Otherwise I don't have anything against the Dyson. This is the DC07 and I believe that they used two different motors in this model.
http://https//www.youtube.com/watch?v=49tKXj1NEPM
sebo_fan
Well-known member
Good to know someone else has perfect pitch. It gives me the greatest speed when writing music.
another really good sounding vacuum
here is a video of a Kenmore whisper tone, not sure if this one was made by Panasonic or Whirl pool, but the motor sounds better than they do now.
here is a video of a Kenmore whisper tone, not sure if this one was made by Panasonic or Whirl pool, but the motor sounds better than they do now.
another good sounding vacuum
Here is a video of a Kenmore whisper tone.
Not sure if this was made by Panasonic or whirl pool but it definitely sounds better than the current models.
Here is a video of a Kenmore whisper tone.
Not sure if this was made by Panasonic or whirl pool but it definitely sounds better than the current models.
