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Magma Chassis Fan Noise
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Old 15th September 2006   #1
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Magma Chassis Fan Noise
Just got an old 7 slot Magma PCI Chassis (has the ribbon cable connector and the expansion card in the first slot). Looking forward to using it to get multiple Powercore and UAD-1 cards on my Sequoia rig... However, when I plugged it in I was amazed at the huge noise coming out of the thing.

3 fan across the front and a power supply that is noisy as well. I would assume I can easily replace the power supply with a quiet one, but what about disabling the fans on the front. How hot will it get and how important is it to keep some sort of fan there. Would quiet fans be better than no fan?

Thanks folks!

--Ben
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Old 15th September 2006   #2
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I put in a quieter fan into mine, took about 15 minutes. I'd suggest a low velocity fan with an inline voltage adjustment.
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Old 11th April 2007   #3
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I put in a quieter fan into mine, took about 15 minutes. I'd suggest a low velocity fan with an inline voltage adjustment.
You replaced the fans in the front?

Where did you get them?
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Old 11th April 2007   #4
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Check what's making the most noise.
I also have a magma (slighly newer rev I think, it's got the thin cable) and I found out the noisiest bit was actually the powersupply. The fans themselves were relatively quiet, and if you're only running dsp cards, you might get away with disconnecting the front fans.

I end up getting a really quiet powersupply (can't remember the make, but it was 400w..might have been a silenx) and that made a huge difference. I also disconnected one of the front fans....so far it has been working fine.

Before that my magma sounded as if it was about to take off!

Cheers,

Joe
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Old 11th April 2007   #5
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I have a 13 slot Bit 3 chassis.

It made a lot of noise, so I disconnected the fans. I've never had issues with UAD, POCO, or PT cards. I have the lid off and a PT ADAT bridge above it, so there is some breathing room at the back.

My powersupply has no fan.
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Old 11th April 2007   #6
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I have a 13 slot Bit 3 chassis.

It made a lot of noise, so I disconnected the fans. I've never had issues with UAD x4, POCOx1, and PTx2 cards. I have the lid off and a PT ADAT bridge above it, so there is some breathing room at the back.

My powersupply has no fan. Or maybe it's dead- not sure. It's 9 years old at this point and is still running like a champ. I just never turn it off.
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Old 11th April 2007   #7
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I ended up replacing the power supply and replacing the fans. Cost a few bucks, but it was worth it. It is darned near silent now. All the moving parts in these things are stupid loud.

Got all my stuff from QuietPC (who has great service, BTW). http://www.quietpc.com

--Ben
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Old 11th April 2007   #8
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Quote:
Originally Posted by fifthcircle View Post
I ended up replacing the power supply and replacing the fans. Cost a few bucks, but it was worth it. It is darned near silent now. All the moving parts in these things are stupid loud.

Got all my stuff from QuietPC (who has great service, BTW). http://www.quietpc.com

--Ben
That's great! thanks so much for the link. I had just emailed UA asking about disconnecting the overhead fans on my Avid expansion chasis since it's three times louder than my old noisey internet computer... gosh... They said the cards are designed to run at high heat tolerances so there shouldn't be a problem, but I think replacing the front fans and the power supply is a really good idea. Do you mind sharing which units worked for you?
Thanks again!
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Old 12th April 2007   #9
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i have a newer 6 channel and it took quite a while to get out all of the internal (i'm guessing hard drive) brackets to get the power supply out but from there it was a breeze replacing it. the airflow in the case looks far from optomized so i don't know i'd feel comfortable disconnecting the front fan. i replaced it with a lower volume fan (these can be found from almost any computer dealer easily these days, same with the p.s.) and mounted a voltage adjust for the fan on the front.
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Old 13th April 2007   #10
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I found very quiet replacement fans for the front of my 13 space chassis at Micro Center, and they have blue leds to match the blue of my PowerCore firewire. The power supply noise wasn't loud enough to mess with.
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Old 14th February 2008   #11
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Hi

I also replaced my 13 slots chassis'PSU for a fanless one and it did improve the noise a lot. The 3 front fans are loud as well though so I tried disconnecting them (I only have 4 UAD1s inside and I spread them out to get better airflow).

When I have more than 1 fan disconnected, the magma crashes my G5. Every time.
It looks like a PSU issue because when I boot with 0 or only 1 fan connected I notice the HD doesn't get any power (yeah, I'm using a dummy HD as a 5v resistor...)

Has anyone experienced that kind of behaviour when disconnecting their magma fans? Any clue on what I could do to fix it?

Thx

Max
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Old 6th March 2008   #12
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Replace the fans with some silent Papst fans. Works like a charm here.
ebm-papst - Ihr Partner in der Welt der Luft- und Antriebstechnik or your local pc parts shop
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