fans

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=116587
Printed Date: May 14, 2025 at 11:08 AM

Topic: fans

Posted By: moondogg911
Subject: fans
Date Posted: September 28, 2009 at 11:53 AM

I am in need of two fans about 4"x4" but my question is how do I connect the fans for push/ pull? I wanna blow air thru a panel to keep sub amp from getting too hot. Do I need relays? Can someone walk me thru the whole thing, Thank you!

Replies:

Posted By: jimi77
Date Posted: September 28, 2009 at 12:14 PM

Typically you don't benefit much from a push/pull. You're better off just going "pull" in most cases. Usually you would use the remote out on the HU to trigger a 12v relay and the relay to power the fans.

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You talking to me???

P9 Combo
ID CD1-Pros
Focal Utopia Midbass
10" Brahma
Clarion APX amps

Posted By: i am an idiot
Date Posted: September 28, 2009 at 12:33 PM

I have seen more than a few fans that have melted due to installing them in a pull through configuration. If you do intend on having one fan upstream from the heat source, make sure it has a metallic chassis, and prefferably metal blades. If using plastic fans, make them push air over the amps.

Posted By: KPierson
Date Posted: September 28, 2009 at 1:22 PM

You don't connect the fans any different for a push/pull configuration - the setup is all dependent on the orientation of the fans themselves. Most fan blades are only designed to rotate in one direction, but by changing the direction the fan is blowing you can change whether it pushes or pulls air.

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Kevin Pierson

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