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Old 5th February 2014, 03:07 PM   #11
diyAudio Member
Join Date: Oct 2012
any luck with reducing your fan noise?
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Old 7th February 2014, 06:43 AM   #12
rovers is offline rovers  Norway
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Join Date: Apr 2013
Originally Posted by turk 182 View Post
any luck with reducing your fan noise?
Yes I did.

I ordered a fan in ebay, not dead silent, but a lot more quiet than the original Superred that QSC uses.

The only way to remove the fan was to use some force as the fan is quite stuck on the four pins it is slid onto.I testet the two fans in free air, and it was an enormous difference. After confirming it worked, I simply removed the strips holding the cable for the original and took it out(it is still complete in case I need it later). Then i installed the new fan and taped the cables together.

Result, very pleased. Almost can not hear the sound and at the levels I have been playing, the air coming out is still ice cold. I have not pushed the amp, but then, not often you need to do that at home in a small room :-)
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Old 1st June 2016, 12:45 PM   #13
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Join Date: Jun 2016
Default Just Discovered Same Situation w/ a GX5

Originally Posted by rovers View Post
Thank you for the advice :-)

That would explain why I had no luck when I tried the first time.
Will give it a go as soon as my new fan arrives in the mail.
How did your fan work out? What make & model is it and who was the vendor?
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Old 25th June 2016, 05:51 PM   #14
Jsixis is offline Jsixis  United States
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Join Date: Feb 2011
Location: Columbus Ohio
you could just unplug the fan, unless your playing at stupid levels the amp should not get hot, if it does it will shut down.
I know nothing, so learning is really awesome.
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Old 25th June 2016, 10:42 PM   #15
wg_ski is offline wg_ski  United States
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Join Date: Oct 2007
I wouldn't go entirely fanless. The GX amps have VERY VERY small heat sinks and require some air over them. Not much at normal volumes, but some.
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Old 27th June 2016, 09:53 PM   #16
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Join Date: Jun 2016
Thanks for input. My speakers are a pair of EV ZLX-12ís and a pair of ZX1ís. Considering selling the GX5's and using an amp w/o fans in bridged mode for each speaker. I asked EV what their amp power recommendations were but tech support did not answer my question. Probably too much info in my request. I will try again. QSC in their response did not mention they have a quieter amp w temperature controlled variable speed fan. Came across that info poking around. I am baffled by business' lack of responsiveness.
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Old 28th June 2016, 05:44 PM   #17
taloyd is offline taloyd  United States
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Join Date: Apr 2004
Location: Los Angeles, CA, USA
Post Recommendation

FWIW - I recommend Yamaha's pro-amps. Most of them have adequate heat-sinking, with on-demand fans that are OFF by default but turn on when needed. This makes them excellent for home use, and I imagine still fine for pro use otherwise their warranty department would be busy. Using a P2500S for subwoofer duty at home for exactly that reason.

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Old 30th June 2016, 03:30 PM   #18
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Join Date: Jun 2016
Thanks, Tal. Looks like a good option.
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