EcoTech QuietDrive MP40wQD Sound Test
- Thread starter sonnus
- Start date
In case someone hasn't already mentioned it, and I'm sure most on SCR can agree, we really appreciate all the time u spend explaining stuff like this to us! I'm on 3 different big reef forums, yet I get the best info from here! I mean this with 100% sincerity, Thanks [MENTION=2872]sonnus[/MENTION] !!!
So much BS and crap talking goes on here, it's like a breath of fresh air when you post. Hahaha
So much BS and crap talking goes on here, it's like a breath of fresh air when you post. Hahaha
http://www.saltwateraquarium.com/upgrade-ecotech-marine-vortech-to-quiet-drive-driver.html
$50 for the mp10, $75 for the mp40, and $100 for the mp60
$50 for the mp10, $75 for the mp40, and $100 for the mp60
I'm not sure about these pumps but in general, when bearings go bad they go bad quickly. Also, a lot of heat is generated from bad bearings so I would expect them to get pretty hot.
I think it's worth upgrading the driver regardless. You should see an improvement in noise no matter what. From my experience, the noise should be inaudible with the pump set at 70% and barely noticeable at 100%. If you don't see these imprints then a new wet side might help. Maybe you could borrow a wet side from another reefer just to compare.
Haha, thanks. I think my poor wife deals with most of my BS so I don't have any left over by the time I get to this board.
I think it's worth upgrading the driver regardless. You should see an improvement in noise no matter what. From my experience, the noise should be inaudible with the pump set at 70% and barely noticeable at 100%. If you don't see these imprints then a new wet side might help. Maybe you could borrow a wet side from another reefer just to compare.
Haha, thanks. I think my poor wife deals with most of my BS so I don't have any left over by the time I get to this board.
So I just got home and listened to the louder mp. I don't believe the bearings are bad at all. Pump dry side is not hot at all and its only slightly louder then the other pump. I'll be ordering up the new driver and trying it on that pump. If it works and makes a very noticeable difference I'll buy one for the other. I'm actually excited to give this a try
Thanks for the info. i shop at your store...
but my maff (math) is fuzzy, how is it a 90% reduction? Reduced 22, 22/50 = 43%, or 43% noise reduction, or the new noise level is 58% of the old.
but my maff (math) is fuzzy, how is it a 90% reduction? Reduced 22, 22/50 = 43%, or 43% noise reduction, or the new noise level is 58% of the old.
So, I had a chance to check out the new QuietDrive MP40 and they are legit. Jets a graph showing the improvements in noise level. This test absolutely confirms EcoTech's 90% reduction in noise levels.
Decibel are logarithmic similar to the earthquake Richter scale.
An increase of just 3 db is 2x as "noisy". (50% quieter)
An increase of just 5 db is 7x as "noisy". (86% quieter)
An increase of just 10 db is 10x as "noisy". (90% quieter)
An increase of just 15 db is 20x as "noisy". (95% quieter)
So this test suggests the pump is 95% quieter!! Of course this test was not performed in an anechoic chamber and there was ambient noise so the test wasn't perfect.
An increase of just 3 db is 2x as "noisy". (50% quieter)
An increase of just 5 db is 7x as "noisy". (86% quieter)
An increase of just 10 db is 10x as "noisy". (90% quieter)
An increase of just 15 db is 20x as "noisy". (95% quieter)
So this test suggests the pump is 95% quieter!! Of course this test was not performed in an anechoic chamber and there was ambient noise so the test wasn't perfect.
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Here is EcoTech explaining the QuietDrive:
http://reefbuilders.com/2015/02/14/ecotech-marine-video-explains-quietdrive-works/
http://reefbuilders.com/2015/02/14/ecotech-marine-video-explains-quietdrive-works/
Thanks, Im tired so I forgot the scale. Just to be argumentative, I recall that if logarithmic, then a 10db decrease is 2x as quiet, then 20db less is 3x as quiet, or would that be 20x as quiet? Im still not sure where the 90% comes in, but im sure there is an subjective component.
anyhoo, from a dB standoint the best deal is to get a new, black driver. but do you know the actual prices for each of these upgrades?
Ray
anyhoo, from a dB standoint the best deal is to get a new, black driver. but do you know the actual prices for each of these upgrades?
Ray
Yeah, there are a lot of different ways to interpret the info. My numbers are actually not correct, I used a "power conversion".
I think the most commonly used reference is SPL (sound pressure level). With SPL a 20 dB change would be 10x difference and 15 dB is just above 5x or 80% SPL reduction.
You could also us "perception of loudness". On this scale 20 dB is 4x difference.
I think the most commonly used reference is SPL (sound pressure level). With SPL a 20 dB change would be 10x difference and 15 dB is just above 5x or 80% SPL reduction.
You could also us "perception of loudness". On this scale 20 dB is 4x difference.
