[Cathar]

Originally Posted by HammerSandwich

However, your noise estimates look a bit optimistic. YL rates the low-speed D12s at 24 & 28 dBA, depending on bearing. The sleeve bearing is the louder, which seems odd; perhaps they swapped things. In addition, MikeC at SPCR measured the Nexus at 22-23, and that's a 25% slower fan.

Yate-Loon site appears to be down, and I never have been able to access it. Don't know why.

Tricod information is non-existent everywhere. Fan noise levels are not standardised anyway.

The Tricod fans that I have here are the sleeve bearing fans. I have 4 of them just sitting here, and 4 things at once is a 6dBA increase over a single thing. Running all 4 at once next to the Panaflo L1A manufacturer-stated 30dBA results in the Panaflo still being clearly louder than the 4xTricods.

I don't know - am more making comparisons relative to the base-line of the L1A at 30dBA, which to me is quieter than any other so-called 30dBA fan I've held.

If the Panaflo L1A is 30dBA, and the sleeve bearing Yate-Loon's are 28dBA (thereby making 2 x 28dBA items = 31dBA), then I'll gladly admit to being deafer than a doorknob if 2 x these Tricods are anything as loud as the Panaflo L1A.

Maybe I should invest in a sound-meter, but then, what would that accomplish without a common frame of reference for everyone else to calibrate to?