High-flow filter options for >200l tanks (2021)

[stevetorley]

This mesure is not accurate, i know, because it depend on phone microphone sensibility.
Anyway my room is more silent than yours 😛
I don't have an OASE 850 I was planning to buy it, my current filter is eheim 2275 (prof 4 600).
My room with no filter close to aquarium: 28db
With filter, open, cabinet, and phone at 15cm 34db
With filter, close cabinet, and phone at 15cm 33db.

someone more have this messures?

Fully aware it's not accurate reading, but you can see the difference between the two. Anyway... helped as much as I can here, so without going out to buy calibrated equipment....
You're welcome 👍

 

[Wookii]

This mesure is not accurate, i know, because it depend on phone microphone sensibility.
Anyway my room is more silent than yours 😛
I don't have an OASE 850 I was planning to buy it, my current filter is eheim 2275 (prof 4 600).
My room with no filter close to aquarium: 28db
With filter, open, cabinet, and phone at 15cm 34db
With filter, close cabinet, and phone at 15cm 33db.

someone more have this messures?

I imagine those measurements are miles off to be honest (dust in your microphone maybe) - it's very difficult to get ambient noise levels down below 30dB even in a sound proofed and acoustically treated listening room (I know, I've designed, built and measured several). Typical background noise (noise floor) in a fairly quiet suburban neighbourhood is around 45-50 dB, in a busier city pad it can be a fair bit higher.

For what it's worth (which is not a lot) you're both showing around the same 16% increase in noise with the filter on. With Steve's reading though, as the decibel scale is logarithmic, with room boundary gain, a 9+dB increase translates to approximately a doubling of in-room noise - which is a fair bit!

 

[Nelson Marto]

I imagine those measurements are miles off to be honest (dust in your microphone maybe) - it's very difficult to get ambient noise levels down below 30dB even in a sound proofed and acoustically treated listening room (I know, I've designed, built and measured several). Typical background noise (noise floor) in a fairly quiet suburban neighbourhood is around 45-50 dB, in a busier city pad it can be a fair bit higher.

For what it's worth (which is not a lot) you're both showing around the same 16% increase in noise with the filter on. With Steve's reading though, as the decibel scale is logarithmic, with room boundary gain, a 9+dB increase translates to approximately a doubling of in-room noise - which is a fair bit!

HI, I agree is not accurate, but maybe the increase of noise can be trustful.. maybe?
increase 9db it's a lot.