How to sound proof a pair of s-7 miners.

philipma1957

legendary

Activity: 4382

Merit: 9330

'The right to privacy matters'

Quote from: citronick on November 01, 2015, 02:42:59 AM

saw this old youtube video on "PC Fan Muffler"

https://www.youtube.com/watch?v=-5vvtt_vwgo

My S7s will be outdoors so all I need to keep the noise down.

Will this fan muffler work ? It certainly use all the concepts discussed in this thread but its look so simple without ducting.

won't work it will cut down the fan speed and air flow way too much.

the ducts I use work they are 7 inch and fit the fans easy.

MarkAz

hero member

Activity: 687

Merit: 511

Quote from: OgNasty on November 01, 2015, 03:15:44 AM

I would be worried about restricting the airflow with something like that.

Definitely WAY too restrictive... There's nothing wrong with the principle behind what they're doing, it's simple: eliminate direct paths for the soundwaves, and replace highly reflective (audible-wise) surfaces with non-reflective ones (ie; foam). I have a huge rack mount case that does much the same thing, but you need to make sure the air channel is at least the same size as the fan, and if you're introducing turns and obstructions then you need more space than that.

OgNasty

donator

Activity: 4760

Merit: 4323

Leading Crypto Sports Betting & Casino Platform

Quote from: citronick on November 01, 2015, 02:42:59 AM

saw this old youtube video on "PC Fan Muffler"

https://www.youtube.com/watch?v=-5vvtt_vwgo

My S7s will be outdoors so all I need to keep the noise down.

Will this fan muffler work ? It certainly use all the concepts discussed in this thread but its look so simple without ducting.

I would be worried about restricting the airflow with something like that.

citronick

legendary

Activity: 1834

Merit: 1080

---- winter*juvia -----

saw this old youtube video on "PC Fan Muffler"

https://www.youtube.com/watch?v=-5vvtt_vwgo

My S7s will be outdoors so all I need to keep the noise down.

Will this fan muffler work ? It certainly use all the concepts discussed in this thread but its look so simple without ducting.

philipma1957

legendary

Activity: 4382

Merit: 9330

'The right to privacy matters'

temps dropped to 45f
my heat is turned off
coldest part of the house =74f
the garage is 86f
sound is good----------looking for the meter

good overnight numbers fan at 60% freq at 587

UfoRia

full member

Activity: 182

Merit: 100

It would be easier to just buy the right size ductboard and then use egg crates padding.

http://www.certainteed.com/resources/3034015.pdf
http://www.certainteed.com/products/insulation/mechanical-industrial/317382

You can find simple ductboard locally and they make it in squares, which is easier to work with if needed.

I just force vent the exhaust into the garage and have a window mounted attic fan that forces air into the room next to the detached garage. I live in Texas, so we can't seal things up otherwise we wind up with mold.

Ufo

philipma1957

legendary

Activity: 4382

Merit: 9330

'The right to privacy matters'

this 8 inch will fit and is a good price. it is in many stores and may the best choice along with duct tape.

http://www.homedepot.com/p/Master-Flow-8-in-x-25-ft-Insulated-Flexible-Duct-R6-Silver-Jacket-F6IFD8X300/100396936

philipma1957

legendary

Activity: 4382

Merit: 9330

'The right to privacy matters'

Quote from: Mikestang on October 30, 2015, 03:48:30 PM

Quote from: philipma1957 on October 30, 2015, 01:06:59 PM

the wall between the garage doors is a support beam. No can do

Well, actually it's a column, but that's the engineer in me speaking through my OCD.

Quote from: OgNasty on October 30, 2015, 01:52:48 PM

I have 6" non-insulated ducting to exhaust the heat and I'm surprised at the noise reduction. That alone makes a 100% fan quieter than a 65% fan without it. Have you tried a shorter length, like say 10" over the exhaust fan only? I am wondering if that would be enough to make a noticeable difference.

I'm not understanding the physics as to why a 6" long tube on the end makes it any quieter. Do you have dB meter readings to back this up?

the pitch changes with more length and since the air travels further it also exits that tube at a slower speed.

my meter readings on non insulated tubes were about 1db less but a bit pitch difference.

I used 7 inch concrete forms (sonotubes)
I used 7 inch metal duct work.

7 inch tubes fit right over the fan the 7 inch product from homedepot is very good

here is a cheap home depot product - but it is six inches it will not fit right

http://www.homedepot.com/p/Master-Flow-6-in-x-25-ft-Insulated-Flexible-Duct-R6-Silver-Jacket-F6IFD6X300/100396935

here is what I used 7 inch r8

http://www.homedepot.com/p/Thermaflex-EverClean-7-in-x-25-ft-HVAC-Ducting-R8-0519-0700-0003/203767737

big price difference

OgNasty

donator

Activity: 4760

Merit: 4323

Leading Crypto Sports Betting & Casino Platform

Quote from: Mikestang on October 30, 2015, 03:48:30 PM

I'm not understanding the physics as to why a 6" long tube on the end makes it any quieter. Do you have dB meter readings to back this up?

The 6" was diameter. Sorry. It is actually multiple feet long and leads outside, so that is where a majority of the noise is routed. I was just curious if a shorter 7" diameter insulated duct over the exhaust fan would also have a good noise reducing effect. I thought it might.

philipma1957

legendary

Activity: 4382

Merit: 9330

'The right to privacy matters'

I boosted fans to 70% and hash to freq 581.25

now I have a 'good' batch 1 and a 575 marked batch 2

but the 581 numbers with both combined below are decent

Mikestang

legendary

Activity: 1274

Merit: 1000

Quote from: philipma1957 on October 30, 2015, 01:06:59 PM

the wall between the garage doors is a support beam. No can do

Well, actually it's a column, but that's the engineer in me speaking through my OCD.

Quote from: OgNasty on October 30, 2015, 01:52:48 PM

I have 6" non-insulated ducting to exhaust the heat and I'm surprised at the noise reduction. That alone makes a 100% fan quieter than a 65% fan without it. Have you tried a shorter length, like say 10" over the exhaust fan only? I am wondering if that would be enough to make a noticeable difference.

I'm not understanding the physics as to why a 6" long tube on the end makes it any quieter. Do you have dB meter readings to back this up?

pj40

full member

Activity: 180

Merit: 100

Quote from: OgNasty on October 30, 2015, 01:52:48 PM

I have 6" non-insulated ducting to exhaust the heat and I'm surprised at the noise reduction. That alone makes a 100% fan quieter than a 65% fan without it. Have you tried a shorter length, like say 10" over the exhaust fan only? I am wondering if that would be enough to make a noticeable difference.

Interesting. It may be worth it to invest in some ducting just to lower the noise and non-insulated stuff is way cheaper than the insulated.

philipma1957

legendary

Activity: 4382

Merit: 9330

'The right to privacy matters'

Quote from: OgNasty on October 30, 2015, 01:52:48 PM

I have 6" non-insulated ducting to exhaust the heat and I'm surprised at the noise reduction. That alone makes a 100% fan quieter than a 65% fan without it. Have you tried a shorter length, like say 10" over the exhaust fan only? I am wondering if that would be enough to make a noticeable difference.

I tell you what I have more then 16 ft left I will cut some short ones.

OgNasty

donator

Activity: 4760

Merit: 4323

Leading Crypto Sports Betting & Casino Platform

I have 6" non-insulated ducting to exhaust the heat and I'm surprised at the noise reduction. That alone makes a 100% fan quieter than a 65% fan without it. Have you tried a shorter length, like say 10" over the exhaust fan only? I am wondering if that would be enough to make a noticeable difference.

philipma1957

legendary

Activity: 4382

Merit: 9330

'The right to privacy matters'

Quote from: OgNasty on October 30, 2015, 12:55:16 PM

Perhaps a cheaper alternative?

http://www.amazon.com/Lamborn-Poly-Jacket-Insulated-R-4-2/dp/B00A8P3QBM/ref=sr_1_2?ie=UTF8&qid=1446227384&sr=8-2&keywords=7+inch+insulated+duct

it is r4 vs r8 that is the heat insulating factor but I suspect it will be a sound factor also.

I am going to have left over material I could build some and ship them out I need to see how much it will pack down.

Quote from: citronick on October 30, 2015, 12:52:36 PM

is it wise to install another fan at the other end of the duct/muffler to get as much heat out as possible?

if you make the duct really long yes it may need a helping fan. my ducts are short and I get very good exit pressure.

Quote from: Mikestang on October 30, 2015, 12:03:58 PM

Quote from: philipma1957 on October 30, 2015, 09:02:08 AM

Phil, did you consider cutting out a vent hole low in the wall between garage doors and ducting the exhaust outside? You could put a nice vent cover over the outside and it wouldn't look like anything out of the ordinary, and then all the heat and much of the exhaust noise would be directed outside.

the wall between the garage doors is a support beam. No can do

it is 2400 watts more or less once we get below 50f the heat will be a non-issue.

as for sound it is under 55db at exit point with the fans at 4100 rpm

In the summer I would need to vent, but my power jumps from 10 cents to 17 cents so I can't summer mine.

OgNasty

donator

Activity: 4760

Merit: 4323

Leading Crypto Sports Betting & Casino Platform

Perhaps a cheaper alternative?

http://www.amazon.com/Lamborn-Poly-Jacket-Insulated-R-4-2/dp/B00A8P3QBM/ref=sr_1_2?ie=UTF8&qid=1446227384&sr=8-2&keywords=7+inch+insulated+duct

citronick

legendary

Activity: 1834

Merit: 1080

---- winter*juvia -----

is it wise to install another fan at the other end of the duct/muffler to get as much heat out as possible?

Mikestang

legendary

Activity: 1274

Merit: 1000

Quote from: philipma1957 on October 30, 2015, 09:02:08 AM

Phil, did you consider cutting out a vent hole low in the wall between garage doors and ducting the exhaust outside? You could put a nice vent cover over the outside and it wouldn't look like anything out of the ordinary, and then all the heat and much of the exhaust noise would be directed outside.

philipma1957

legendary

Activity: 4382

Merit: 9330

'The right to privacy matters'

Quote from: torepia on October 30, 2015, 09:40:40 AM

Nice work! Are the miners inside the ducts/vents? Or are you using them just for intake/outtake?

duct----miner----duct
duct----miner----duct
^
^
------ audio rack------

has the miners and the psu's

you could do

duct-- miner-- duct

and get good noise drop.

you could do

duct--------- tube with miner ----- duct

tube is four feet cut in 2

so 3 foot duct------- 2 foot tube ( miner inside) --- 3 foot duct.

7 feet long since some of the duct is inside the cardboard tube

I am piggybacking the controller in my setup so I used the audio rack I linked. since my miners are close together.

I may switch to the tube idea and use 2 controllers

torepia

full member

Activity: 140

Merit: 100

Nice work! Are the miners inside the ducts/vents? Or are you using them just for intake/outtake?

philipma1957

legendary

Activity: 4382

Merit: 9330

'The right to privacy matters'

results are it is quiet.

at 60% fan which is more than 4000 rpm

freq 575

I am well under 55db

cost was 100 for the duct

I can make 4 more

I made 4

A wooden case the audio rack was free but you could build a rectangle open ended box for 10 bucks

and some duct tape 10 more grand total of 120.

to be fair I added some moving blankets and a pair of long sheets of mdf but they don't take a lot of extra sound off.

I will break the sound meter out in a bit.

philipma1957

legendary

Activity: 4382

Merit: 9330

'The right to privacy matters'

two on intake

for the center I have an old audio rack

http://www.mcmelectronics.com/product/555-17805?green=11116641562

my two car garage is now a 1 car. but it has been used as a one car garage with storage for years.

philipma1957

legendary

Activity: 4382

Merit: 9330

'The right to privacy matters'

finally got my two set up in the garage.

hands down the best solution is this. you can make at least 6 mufflers which does 3 s-7's

can not get this to show

https://i.imgur.com/88djusZ.png

one muffler

two on exhaust

valkir

legendary

Activity: 1484

Merit: 1004

loll Tupsu

Yeah sure its not for me.

Tupsu

legendary

Activity: 1218

Merit: 1003

Quote from: valkir on September 24, 2015, 05:48:53 PM

You guys run 2 S7 on 1 Controller ? Why ?

If you have to ask why, this is not for you.

I want to use the S7 controller for 8 x S5 blade.
It is 1 x water cooled S5 4,3 TH/s. Winter is coming.

philipma1957

legendary

Activity: 4382

Merit: 9330

'The right to privacy matters'

Quote from: alh on September 24, 2015, 11:52:50 PM

Quote from: Hippie Tech on September 24, 2015, 10:31:54 PM

geez.. that is one freakishly loud miner.. heh.

https://youtu.be/5UFGEXyduSA

Have you tried reseating the heatsinks ?

Are the chips sitting flush with said heatsinks ?

Have you considered lapping everything and/or adding a copper slab or shims to the heatsink ?

Why all the interest in the heatsinks? As I have seen the pictures, there is a small heatsink :)onto each chip. They aren't screwed down in any way. There is nothing to lap. It's completely unlike a CPU heatsink in terms of it's attachment.

It's a 1200W box that's got to get rid of it's heat, and it does so with high static pressure, high CFM, loud fans.

yeah and the only way to keep temps down it to let the fans do their job. So if you are not restricting airflow the best shot you have is a muffler system.

Now the 25 foot piece of duct work I ordered from Home Depot was 97 bucks. If it works well it is lower cost then the mufflers and it will allow me to send the hot air out the window. am looking forward to its arrival.

alh

legendary

Activity: 1850

Merit: 1055

Quote from: Hippie Tech on September 24, 2015, 10:31:54 PM

geez.. that is one freakishly loud miner.. heh.

https://youtu.be/5UFGEXyduSA

Have you tried reseating the heatsinks ?

Are the chips sitting flush with said heatsinks ?

Have you considered lapping everything and/or adding a copper slab or shims to the heatsink ?

Why all the interest in the heatsinks? As I have seen the pictures, there is a small heatsink :)onto each chip. They aren't screwed down in any way. There is nothing to lap. It's completely unlike a CPU heatsink in terms of it's attachment.

It's a 1200W box that's got to get rid of it's heat, and it does so with high static pressure, high CFM, loud fans.

Hippie Tech

legendary

Activity: 1624

Merit: 1001

All cryptos are FIAT digital currency. Do not use.

geez.. that is one freakishly loud miner.. heh.

https://youtu.be/5UFGEXyduSA

Have you tried reseating the heatsinks ?

Are the chips sitting flush with said heatsinks ?

Have you considered lapping everything and/or adding a copper slab or shims to the heatsink ?

philipma1957

legendary

Activity: 4382

Merit: 9330

'The right to privacy matters'

Quote from: valkir on September 24, 2015, 05:48:53 PM

Quote from: philipma1957 on September 24, 2015, 05:40:43 PM

Wow I was dead lucky with that setup just plugged them in with no real thought and they worked.

Quote from: Tupsu on September 24, 2015, 05:30:15 PM

Thank you. Now working .

Quote from: philipma1957 on September 24, 2015, 05:14:51 PM

@ Tupsu

here is a shot of my controller loaded for 6 boards. so:

1)full
2) full
3) full
4)full
5) blank
6)full
7) blank
8 )full
9) blank

Click to enlarge

You guys run 2 S7 on 1 Controller ? Why ?

saves power and if it dies you have a backup.

generalt

legendary

Activity: 1096

Merit: 1021

Quote from: philipma1957 on September 24, 2015, 08:12:52 PM

I am now running 2 pieces and the room is too warm since the night air is warm.

A two piece design needs to be diff. if you attach the machines the muffler will need to have a different adapter to accommodate the fans

I think you need to vent them out a window or something.

philipma1957

legendary

Activity: 4382

Merit: 9330

'The right to privacy matters'

Quote from: generalt on September 24, 2015, 07:57:00 PM

Nice work Phil. I'd love to see the two S7's on one controller at 600 freq Cheesy

need more muffler

found this at home depot

http://www.homedepot.com/p/Thermaflex-EverClean-7-in-x-25-ft-HVAC-Ducting-R8-0519-0700-0003/203767737

if this is better it is much cheaper

philipma1957

legendary

Activity: 4382

Merit: 9330

'The right to privacy matters'

Quote from: Mikestang on September 24, 2015, 05:50:10 PM

Phil, what was the dB reading before the muffler? I didn't see it listed in the thread.

stock speed 600
each muffler drops it 4db so 65 or 66db for 1 s-7 and it whines fan at about 35-38%

then 61-62 1 muffler

then 57-58 2 mufflers with stock freq and fan at 35%

it is warm in NJ 77f today if it were colder fan could go to 32%

all numbers above are at ⅔ meter

I am now running 2 pieces and the room is too warm since the night air is warm.

A two piece design needs to be diff. if you attach the machines the muffler will need to have a different adapter to accommodate the fans

generalt

legendary

Activity: 1096

Merit: 1021

Nice work Phil. I'd love to see the two S7's on one controller at 600 freq Cheesy

Mikestang

legendary

Activity: 1274

Merit: 1000

Phil, what was the dB reading before the muffler? I didn't see it listed in the thread.

valkir

legendary

Activity: 1484

Merit: 1004

Quote from: philipma1957 on September 24, 2015, 05:40:43 PM

Wow I was dead lucky with that setup just plugged them in with no real thought and they worked.

Quote from: Tupsu on September 24, 2015, 05:30:15 PM

Thank you. Now working .

Quote from: philipma1957 on September 24, 2015, 05:14:51 PM

@ Tupsu

here is a shot of my controller loaded for 6 boards. so:

1)full
2) full
3) full
4)full
5) blank
6)full
7) blank
8 )full
9) blank

Click to enlarge

You guys run 2 S7 on 1 Controller ? Why ?

philipma1957

legendary

Activity: 4382

Merit: 9330

'The right to privacy matters'

Quote from: BLOCK_C on September 24, 2015, 05:40:12 PM

Sound proof will raise the temperature substantially and probably shorten the life of your miners. Just put them in the garage or something.

Sound proofing does not increase temps if done correctly.

I am not restricting air flow with the muffler system.

the setup works fine with one machine. with more then one it will need a tweak or 2.

easiest tweak is don't slide them to lock.

the mufflers will never leak water/coolant.

SunnyIgor

sr. member

Activity: 353

Merit: 251

Quote from: BLOCK_C on September 24, 2015, 05:40:12 PM

Sound proof will raise the temperature substantially and probably shorten the life of your miners. Just put them in the garage or something.

or watercool it!

SunnyIgor

sr. member

Activity: 353

Merit: 251

you tink making watercooled s7 will be possible?
with c1 /s3/ s5 bloscks?
maby someone make a hole new designg waterblock for s7?
i will buy! Grin

philipma1957

legendary

Activity: 4382

Merit: 9330

'The right to privacy matters'

Wow I was dead lucky with that setup just plugged them in with no real thought and they worked.

Quote from: Tupsu on September 24, 2015, 05:30:15 PM

Thank you. Now working .

Quote from: philipma1957 on September 24, 2015, 05:14:51 PM

@ Tupsu

here is a shot of my controller loaded for 6 boards. so:

1)full
2) full
3) full
4)full
5) blank
6)full
7) blank
8 )full
9) blank

Click to enlarge

BLOCK_C

newbie

Activity: 35

Merit: 0

Sound proof will raise the temperature substantially and probably shorten the life of your miners. Just put them in the garage or something.

Tupsu

legendary

Activity: 1218

Merit: 1003

Thank you. Now working .

EDIT.

For 8 board :

1 )full
2 ) full
3) blank
4 ) full
5 ) full
6 ) full
7 ) full
8 ) full
9 ) full

Quote from: philipma1957 on September 24, 2015, 05:14:51 PM

@ Tupsu

here is a shot of my controller loaded for 6 boards. so:

1)full
2) full
3) full
4)full
5) blank
6)full
7) blank
8 )full
9) blank

Click to enlarge

philipma1957

legendary

Activity: 4382

Merit: 9330

'The right to privacy matters'

The machines slide together pretty nice

you could link 20 or 30 on a long table.

but this linking has set back my soundproofing as it is too tight a fit to slide the muffler over the fan

I could dlink them to make room for mufflers see photo

I have to decide what I want to do.

philipma1957

legendary

Activity: 4382

Merit: 9330

'The right to privacy matters'

Quote from: ?? on ??

200$ to take it down to 58 db is good but that next to your bed? Talk about not being able to sleep easily, I do like the set up a lot but the only real negative I see space.

it is going in the garage

that bedroom is a guest bedroom and the 220/240 power is easy access.

I am cleaning the garage to make room.

cost is 100 for 1 machine not 200

@ Tupsu

here is a shot of my controller loaded for 6 boards. so:

1)full
2) full
3) full
4)full
5) blank
6)full
7) blank
8 )full
9) blank

philipma1957

legendary

Activity: 4382

Merit: 9330

'The right to privacy matters'

Quote from: Tupsu on September 24, 2015, 03:16:41 PM

Quote from: philipma1957 on September 24, 2015, 12:29:34 PM

Okay more good news the controller runs 6 boards. I am doing it now .
..................

Share the secret of what data cable ports to use and what data cable port left free. Or a picture.

Mine succeeds only 5 blades and sixth with ------------------------------------

give me a minute or 2.

did you a) check the cables maybe one is bad.
b) I could not get every psu to work I had to play around.

so check the power supplies and the cables.---- as I had that line of dots with the wrong psu's

So far I got an evga 1600 p2 and a seasonic 1200 plat the evga is doing 4 boards and the seasonic is doing 2 boards.

My highest setting has been 531.25 it works fine with this. oh the evga is driving the lone controller.

Tupsu

legendary

Activity: 1218

Merit: 1003

Quote from: philipma1957 on September 24, 2015, 12:29:34 PM

Okay more good news the controller runs 6 boards. I am doing it now .
..................

Share the secret of what data cable ports to use and what data cable port left free. Or a picture.

Mine succeeds only 5 blades and sixth with ------------------------------------

philipma1957

legendary

Activity: 4382

Merit: 9330

'The right to privacy matters'

Okay more good news the controller runs 6 boards. I am doing it now .

I am at ½ clock freq 300 as the psu will only give me 1600 watts max.

at ½ speed clock fans can go to 20% no mufflers needed 55db with decent pitch and temps are good.

philipma1957

legendary

Activity: 4382

Merit: 9330

'The right to privacy matters'

Quote from: torepia on September 24, 2015, 09:11:41 AM

Great idea mate!
~~Would it be "safe" putting the miner inside a bigger version of those ducts?~~ I could consider something like this for older ASIC's at a "stealth-mining site"!

Miners gotta mine! Cheesy

Edit:

Didn't see your "17 Inch Deep Rack Sleeve 4U", this basically answers my question!

I am going to set the second one up and try the rack sleeve as the draw in muffler along with the metal ones as the exhaust mufflers.

Setting the fan speed to 28% - 35% and the clock speeds from 550 to 612 will allow for tuning the sound.

Right now I am exploring super low clocks.

fans are 20% sound down to 47db at ⅔ meter and at 44db at bedroom door.

running under 12 volts void warranty I am running at 12 volts with the evga 1600 p2 I use 610 watts to get this hash . I will do 11 volts in 90 days I will do 10 volts in 90 days.

torepia

full member

Activity: 140

Merit: 100

Great idea mate!
~~Would it be "safe" putting the miner inside a bigger version of those ducts?~~ I could consider something like this for older ASIC's at a "stealth-mining site"!

Miners gotta mine! Cheesy

Edit:

Didn't see your "17 Inch Deep Rack Sleeve 4U", this basically answers my question!

valkir

legendary

Activity: 1484

Merit: 1004

Crazy setup! Grin

as always Phil is the man!

philipma1957

legendary

Activity: 4382

Merit: 9330

'The right to privacy matters'

So far the temps are a bit high
I am trying to get under 60 with fans at 30%

  64-66 with freq 587 and fans at 30% hash is 4775 240 volts x 4.8 = 1152 watts or .241 watts a gh

  63-65 with freq 581 and fans at 30% hash is 4708 240 volts x 4.8 = 1152 watts or .245 watts a gh {note my pdu only does amps up to 1/10 so watts are off a bit}

63-65 with freq 575 and fans at 30% hash is 4646 240 volts x 4.7 = 1128 watts or .242 watts a gh

  63-65 with freq 568 and fans at 30% hash is 4598 240 volts x 4.6 = 1104 watts or .239 watts a gh

freq 568 is giving me 0% errors. but it is still too warm. I am going to bump fan to 32%

32% drops me to 61-63 0% errors

so freq 568 fans at 32% will do a long run. over night.

Now it is still warm in New Jersey. So once it gets colder I can run the fans lower. This unit has custom fan settings and custom freq setting. So with those of us that are sound challenged it is way better then the s-5.

philipma1957

legendary

Activity: 4382

Merit: 9330

'The right to privacy matters'

Quote from: alh on September 23, 2015, 06:49:01 PM

So is your "all in" price about $200 to "muffle" one S7? Have you down clocked in any way, or is it running at stock speed from the factory?

no it was:

53 + 53 = 106 for 2 mufflers

2 bike clamps are 5 bucks

rubber is about 6

so 106+ 5 + 6 = 117 I had an ebay discount of 14% on the 2 mufflers so take off 15 = 102.

the mufflers will last longer then the s-7 so they will be a sunk cost.

BTW if you buy 2 or 3 of these S-7's you can link them on their side rails.

this allows for 2 of these http://www.mcmelectronics.com/product/555-17805 lined with this

http://www.ebay.com/itm/220659184713? one for intake one for discharge

this would do 3 units.

Also a very slight underclock to freq 575 would allow fans lower maybe 25 or 30% .

this is the next test I will set this freq 575 and fans at 25%.

I set it to freq 587 and fans at 30% looks too warm. db is 56 at ⅔ meter db is 51 at bedroom door.

240 volt evga p2 1600 pdu read 4.8 amps so 4.8 x 240 = 1152 watts and hash is 4779 so 1152/4779 = 0.241 watts a gh!!

Prelude

legendary

Activity: 1596

Merit: 1000

Love the pics, Phil!!! Cheesy

Please stick a Vtec sticker on your S7 and make it a complete package. Grin

alh

legendary

Activity: 1850

Merit: 1055

So is your "all in" price about $200 to "muffle" one S7? Have you down clocked in any way, or is it running at stock speed from the factory?

Biodom

legendary

Activity: 4004

Merit: 4656

Quote from: philipma1957 on September 23, 2015, 05:37:15 PM

Quote from: Biodom on September 23, 2015, 05:14:04 PM

would like to claim a small partial ownership for the muffler idea (no royalty needed

:

https://bitcointalksearch.org/topic/m.12312327
https://bitcointalksearch.org/topic/m.12312635

Phil: did you have to order 10" or it fit into a 8" enclosure? thanks
10" is a bit steep ($120), but 8" might be ok if it works ($80)

don't knock the importance of the rubber and the bike clamp as that decouples the miner from the muffler. My Hot air heat duct for my home has a rubber joint about 1 foot from the furnace it acts as a sound deadener. It is antoher reason why I used rubber and the bike clamps.

each muffler takes 4-6 db off so instead of 58 it would be 66-70db at ⅔ meter

yes, it is better this way. i wonder what would happen if the miner is fully IN the muffler...maybe less of effect in comparison with what you've got.
53-54 dB is fantastic!

philipma1957

legendary

Activity: 4382

Merit: 9330

'The right to privacy matters'

Quote from: Biodom on September 23, 2015, 05:14:04 PM

would like to claim a small partial ownership for the muffler idea (no royalty needed

:

https://bitcointalksearch.org/topic/m.12312327
https://bitcointalksearch.org/topic/m.12312635

Phil: did you have to order 10" or it fit into a 8" enclosure? thanks
10" is a bit steep ($120), but 8" might be ok if it works ($80)

six inch is good with the rubber and the bike clamps.

but 8 inch will just fit easy.

Since I had the bike clamps and the rubber I purchased the 6 inch mufflers.

the bitmaintech fans are about 6.75 inches on a diagonal so a 7 inch round hole works.

don't knock the importance of the rubber and the bike clamp as that decouples the miner from the muffler. My Hot air heat duct for my home has a rubber joint about 1 foot from the furnace it acts as a sound deadener. It is antoher reason why I used rubber and the bike clamps.

each muffler takes 4-6 db off so instead of 58 it would be 66-70db at ⅔ meter

Biodom

legendary

Activity: 4004

Merit: 4656

would like to claim a small partial ownership for the muffler idea (no royalty needed

:

https://bitcointalksearch.org/topic/m.12312327
https://bitcointalksearch.org/topic/m.12312635

Phil: did you have to order 10" or it fit into a 8" enclosure? thanks
10" is a bit steep ($120), but 8" might be ok if it works ($80)

toptek

legendary

Activity: 1274

Merit: 1000

Quote from: adaseb on September 23, 2015, 04:52:50 PM

Any idea why they don't sell these "duct mufflers" at Home Depot?

they do

http://www.homedepot.com/p/Suncourt-6-in-In-Line-Duct-Muffler-DM106/202803671

may be not that one but one of something and other HVAC Accessories that might be use full

philipma1957

legendary

Activity: 4382

Merit: 9330

'The right to privacy matters'

how to get a round muffler on a square fan just use rubber pond fabric and a bike clamp

piece of fabric

cost was about 100 usd for
2 mufflers 2 bike clamps 2 pieces of rubber

and the wife is happy - priceless

toptek

legendary

Activity: 1274

Merit: 1000

I did rhe same thing with a out side gas Generator sense it was to load to use were i live unless the power went out still do from time to time to save in the cost of Electricity but it really make no sense now to do because of the cost of gas it is cheaper using Electricity at one time it wasn't thu .

but nice you can do it with a S7 and keep the temps cool enough to run it at stock speed

.

philipma1957

legendary

Activity: 4382

Merit: 9330

'The right to privacy matters'

taken while standing in the bedroom door

money shot 53db standing in the bedroom door
this is good enough for me. I am sure I can go under 50db but I do not need to do that.

adaseb

legendary

Activity: 3808

Merit: 1723

Any idea why they don't sell these "duct mufflers" at Home Depot?

philipma1957

legendary

Activity: 4382

Merit: 9330

'The right to privacy matters'

note meter is ⅔ meter from sound source

overhead view

philipma1957

legendary

Activity: 4382

Merit: 9330

'The right to privacy matters'

58 db not my final setup as I decided this setup has a chance of shorting

GriffinHeart

full member

Activity: 182

Merit: 100

Hello there!

I moved my fans from my miner after I water cooled it.
I can hide it in my dorm and let it mine quietly and my room-mates have absolutely no idea it's been hiding there!
Trying to sound proof it with the fans connected is an admirable task.

//Watching

majestymage

hero member

Activity: 994

Merit: 504

Quote from: philipma1957 on September 23, 2015, 04:14:32 PM

fans at 35%

please tell us how loud is that?

philipma1957

legendary

Activity: 4382

Merit: 9330

'The right to privacy matters'

fans at 35%

here is a screen shot

philipma1957

legendary

Activity: 4382

Merit: 9330

'The right to privacy matters'

Quote from: ?? on ??

How low did you get the dB with the mufflers?

62 db but a very good pitch

I can do lower
since temps are 54 with fan dropped to 40%

I also have not fully finished the sound proofing.

Next step is set fans to 35%

adaseb

legendary

Activity: 3808

Merit: 1723

See if you can make it sound as low as an S3 and I might buy one.

philipma1957

legendary

Activity: 4382

Merit: 9330

'The right to privacy matters'

Fast note Setting custom fan speed to 40% and the mufflers get really good results.

the fans speed at 3000 on 40% setting
temps are stable
and with mufflers in place db readings are good.

philipma1957

legendary

Activity: 4382

Merit: 9330

'The right to privacy matters'

they are here and have 1 running.

the mufflers work. photos and numbers coming up

philipma1957

legendary

Activity: 4382

Merit: 9330

'The right to privacy matters'

My miners arrive today.

I have purchased.

http://www.lowes.com/ProductDisplay?productId=3005463

http://www.ebay.com/itm/281147636370?

http://www.ebay.com/itm/220659184713?

http://www.kohls.com/product/prd-2168069/the-big-one-1-12-in-memory-foam-mattress-topper

I have a sound meter.

I will post results on sound proofing. Most likely on thurs.

Topic: How to sound proof a pair of s-7 miners. (Read 4504 times)