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PostPosted: Tue Jan 09, 2018 9:16 am 
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Joined: Sat Apr 24, 2010 12:04 pm
Posts: 8
Location: Ottawa, ON, CA
Hi All,
Looking for advice on what you have used to keep equipment, especially power amps, cool when placed in tighter spaces - I know, don't place a class A power amp in a tight space but for now it's what I've got - if no reasonable solution is presents then I'll have to "discuss" with my better half and move equipment.
I've been looking at an AC Infintity 4" fan with temp control / sensor but not sure how I would DIY it without disfiguring the cabinet - I've got about 1.5" head room clearance and about 3" on the sides but the amp protrudes out the back about 2".
Thoughts? - pictures of DIY fan set up's? All responses appreciated.

Cheers,
Malcolm


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PostPosted: Tue Jan 09, 2018 9:33 am 
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Joined: Fri May 20, 2011 12:15 pm
Posts: 291
Location: toronto, ON, CA
If there is enough room to place fans directly under the heatsinks and force air upwards, you could balance the amp on the fans, but it is better to avoid the vibration and mount the fans below so they
don't touch the amp. You will still need to have sufficient room for the forced air to come out.


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PostPosted: Tue Jan 09, 2018 9:47 am 
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Joined: Thu Nov 25, 2004 4:52 pm
Posts: 1012
Location: Montreal, QC, CA
I use a laptop computer cooler with 4 fans that are switchable in pairs (front or back), off or all on. Keeps the Krell kool.
They run quietly enough to be on 24/7 but ideally should be switched on only when needed for the sake of dust accumulation.
The switching option has proved to be very useful when using different amplifiers with different vent or heatsink configuration.


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PostPosted: Tue Jan 09, 2018 10:27 am 
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Joined: Fri Dec 27, 2013 7:46 pm
Posts: 63
Location: Surrey, BC, CA
these are what I use. They have rear or vertical exhuast options.

https://www.acinfinity.com/receiver-amp-cooling-fans/


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PostPosted: Tue Jan 09, 2018 11:02 am 
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Joined: Thu Aug 18, 2005 3:44 pm
Posts: 641
Location: Repentigny, QC, CA
Yes proper ventilation either natural convection with lots of space around.
Be warned that especially adding ventilation (muffin fans) to a Class A amplifier on heat sink will change the bias on output transistors.
A lot of amp designs with large heat sink is part of the normal convection heat dissipation.
If you add fan in normal ambient 25 Celsius you sort of change the bias that keeps this amplifier as design to a specific point,that is maybe considered
hot like 45 to 50 Celsius.
Of course amps design to be operated in harsh pro environment are with fans, but normal hifi either Class A or AB+ are ok in normal house.


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PostPosted: Tue Jan 09, 2018 12:46 pm 
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Joined: Thu Mar 31, 2005 12:00 am
Posts: 122
Location: Port Moody, BC, CA
My gear is already cool. :lol:


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PostPosted: Tue Jan 09, 2018 1:15 pm 
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Joined: Wed Sep 13, 2006 7:45 pm
Posts: 557
Location: Athabasca, AB, CA
Procool fans,


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