How Loud Is 75db? 80db?

Hello,
I think I’ve come up with a plan for financing a btc miner, but I’m a little worried my wife will complain about the noise. Exactly how loud are these things? Louder than a vacuum cleaner? Can you hear it in the house if it’s in the garage? I could probably build a box around it to reduce the noise a little but then I may have heat issues? Is anybody setting up water cooling systems? I’ve already got pumps, radiators, fans and big reservoirs from other hobbies…

I’ve got a couple bobcat 300’s on order. And may also pick up a mini doge miner since I can stick it in my office. But it doesn’t seem like the ROI on the mini-doge is very good. It’s a bit of a gamble. I’ll basically be holding the coins and hoping they go up or buying a bunch of tesla tshirts. It looks like btc mining is the only sure thing at this point.

The ROI on the avalon miners seems to be about 12 months at current prices, should be less when prices go back up, but I don’t want to buy it, plug it in, and then have to sell it at a loss when the wife vetoes it because of the noise.

Thanks,

The AvalonMiner 1246 is the most profitable Avalon miner according to ASIC miner value. Its listed at 75 DB. That should be similar to a vacuum running 24/7 forever.

Its loud, i had in basement 75db and my wife could hear it 3 levels up. Luckily i have a detached garage and put in there!

if your garage is attached by wall to the master bedroom like mine is … you can hear the miner very easy at a low dull whine.

Inside my garage? it sounds like a 3 Cox engine Remote control airplanes taking off all the time.

Has anybody tried something like this:

Yup. Here’s mine. I’ve since substituted auto sound deadening for the acoustic foam as the latter did nothing.

The filter is the largest shop vac filter I could find that had a 6" dia opening. I fabricated a bracket to hold it on. Overall, my setup reduces noise levels down from 80-81 db down to 69-70 db ducted through an adapter that I made that exits out the bottom of a window.

I’m pretty sure I get could get the noise down by another 10 db with a custom design. But I have 3 rigs and the noise level is now fine for my garage.

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Plus 2 fans in and out for decreasing from 80 to 60 db

Approximately 4 miners with 75db e equal to 1 80db. Also 2 miners with 80db is 81 db.

That looks nice! At what temperature does it work normally?

Not sure which temp you mean. I’m running two KD5’s and one LT5 Pro. Temps per Goldshell software vary depending on the time of year (and from rig to rig and board to board). One of my KD5’s has always run a bit hotter than the other since new. I’m not sure why (no major difference in hash rate). I also live in FL so my rigs tend to run warm for a good part of the year anyways.

Hi Joesph
Maybe this will help Decibels Explained

Every day we hear a variety of sounds. Sounds that are too loud or loud sounds over a long time, can damage your hearing.

The loudness of sounds is measured in decibels (dB). Learn the decibel levels for different sounds and know which noises can cause damage to your hearing.

Protect your ears when you are involved in a loud activity.

How loud is too loud?

Decibel Level Source
10 dB Normal breathing
20 dB Rustling leaves, mosquito
30 dB Whisper
40 dB Stream, refrigerator humming
50-60 dB Quiet office
50-65 dB Normal conversation
60-65 dB Laughter
70 dB Vacuum cleaner, hair dryer
75 dB Dishwasher
78 dB Washing machine
80 dB Garbage disposal, city traffic noise

Prolonged exposure to any noise above 90 dB can cause gradual hearing loss

Decibel Level Source
84 dB Diesel truck
70-90 dB Recreational vehicle
88 dB Subway, motorcycle
85-90 dB Lawnmower
100 dB Train, garbage truck
97 dB Newspaper press
98 dB Farm tractor

Regular exposure of more than 1 minute risks permanent hearing loss.

Decibel Level Source
103 dB Jet flyover at 100 feet
105 dB Snowmobile
110 dB Jackhammer, power saw, symphony orchestra
120 dB Thunderclap, discotheque/boom box
110-125 dB Stereo
110-140 dB Rock concerts
130 dB Jet takeoff, shotgun firing
145 dB Boom cars

Does the psu overheat with being enclosed completely?

I was curious about what you asked. Found a decibel meter to download onto my phone, now to experiment with it…

If there is no proper airflow or temperature control, then YES. It will overheat, depending on PSU, usually the miner goes first due to the the circuits.

No. But the inlet side draws through a 6" dia hole on the side of the cooler (covered by a filter). So there’s a lot of air circulation within the cooler itself. But even if outside air were directly ducted to the inlet of the rig, I still don’t think that it’d get too warm inside the cooler. The amount of air passing over the heat sinks tends to prevent heat soak to the outside of the rig.

You also can’t see it in the pic that I uploaded, but each cooler has a digital readout and temp probe. I monitored these for a few weeks initially but then stopped when I constantly noticed that cooler internal temp was just a couple of degrees higher than ambient air in my garage.