Need help with CV-5000 fan mod - AVS Forum | Home Theater Discussions And Reviews
Forum Jump: 
 
Thread Tools
post #1 of 10 Old 10-04-2014, 02:34 PM - Thread Starter
AVS Forum Special Member
 
04rex's Avatar
 
Join Date: Nov 2010
Location: London, Canada
Posts: 1,042
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 330 Post(s)
Liked: 64
Need help with CV-5000 fan mod

hey guyS, I bought the fans that johnplayerson said to get. I understand how to essentially do it. At least I think I do. Lol.

My question is, with the new fans I bought, they have 3 wires where as the CV-5000 fans only have 2. How do I figure out which wires on the new fans are positive and negative? And what do I do with the third? Just leave it I assume.

Any help and clarification is greatly appreciated.

Thanks!
04rex is offline  
Sponsored Links
Advertisement
 
post #2 of 10 Old 10-04-2014, 03:08 PM
 
More is Better's Avatar
 
Join Date: May 2013
Location: USA
Posts: 1,371
Mentioned: 15 Post(s)
Tagged: 0 Thread(s)
Quoted: 620 Post(s)
Liked: 354
I know nothing about your fans, but in general:


If the fans are DC, I think they should be.
The 3rd wire should be a speed sensor, and can be left unhooked.
As for finding the + and - wires, tap wires to a 9V battery till the fan spins the right way.
More is Better is offline  
post #3 of 10 Old 10-04-2014, 06:46 PM - Thread Starter
AVS Forum Special Member
 
04rex's Avatar
 
Join Date: Nov 2010
Location: London, Canada
Posts: 1,042
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 330 Post(s)
Liked: 64
Ok, that actually leads me to my next question. Which way should the air be moving? Into the amp or out?
04rex is offline  
Sponsored Links
Advertisement
 
post #4 of 10 Old 10-04-2014, 07:53 PM
AVS Forum Special Member
 
Join Date: Feb 2013
Posts: 1,522
Mentioned: 34 Post(s)
Tagged: 0 Thread(s)
Quoted: 17 Post(s)
Liked: 664
I did a simple wiring diagram for this mod about a year ago in this post. And here is a page with the pinout of the fan connector itself.

As far as direction, just make it the same as stock, determined by holding a piece of paper by the fans when they're running.
andyc56 is online now  
post #5 of 10 Old 10-05-2014, 06:13 AM - Thread Starter
AVS Forum Special Member
 
04rex's Avatar
 
Join Date: Nov 2010
Location: London, Canada
Posts: 1,042
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 330 Post(s)
Liked: 64
Cool, thanks Andy. Only thing is the fans that I got are all the same color, white. So I guess I will have to try the battery thing.

Thanks again.
04rex is offline  
post #6 of 10 Old 10-05-2014, 01:14 PM
AVS Forum Special Member
 
Join Date: Feb 2013
Posts: 1,522
Mentioned: 34 Post(s)
Tagged: 0 Thread(s)
Quoted: 17 Post(s)
Liked: 664
You can identify the correct wires using the notch in the fan's connector. With the notch facing you and the connector pointing up, the ground is on the right. The +12 is always in the middle.
andyc56 is online now  
post #7 of 10 Old 10-06-2014, 09:38 AM - Thread Starter
AVS Forum Special Member
 
04rex's Avatar
 
Join Date: Nov 2010
Location: London, Canada
Posts: 1,042
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 330 Post(s)
Liked: 64
Thanks guys. I hooked it all up and it all works fine.

Only difference is I notice that there is a bit less air movement from the fans than the originals. Should this be any cause for concern?
04rex is offline  
post #8 of 10 Old 10-06-2014, 11:52 AM
Advanced Member
 
MemX's Avatar
 
Join Date: Oct 2012
Posts: 749
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 55 Post(s)
Liked: 65
The fans will very probably be moving less air than the originals, hence they are quieter. They should be fine as the CV5000 is designed to be pumping out 5000w for hours as part of an amp stack for a stadium full of people, seemingly, so us listening to a couple of movies at home shouldn't kill it

That said, I'm just going to stick mine in a cupboard! lol

The fans are at the back and suck air through from the front and blow it out the back.
MemX is offline  
post #9 of 10 Old 10-06-2014, 04:00 PM - Thread Starter
AVS Forum Special Member
 
04rex's Avatar
 
Join Date: Nov 2010
Location: London, Canada
Posts: 1,042
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 330 Post(s)
Liked: 64
Perfect. Ok.

Yeah the fans right now are also blowing out. So all is good. Thanks again.
04rex is offline  
post #10 of 10 Old 10-07-2014, 01:56 AM
Advanced Member
 
johnplayerson's Avatar
 
Join Date: Feb 2008
Location: Canada
Posts: 662
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 296 Post(s)
Liked: 79
Don't forget the QSC RMX 5050, rated the same as the CV 5000 according to QSC, drives the same load threw only 12 transistors per channel, and cools the whole amplifier with only one 4 inch fan, So slowing down 2 fans on a cv 5000 with 16 output transistors getting less heat per transistor should not be a concern. )

https://discuss.avscience.com/index.php?topic=459.60
A Good amplifier requires a adequate power supply, It does not matter what the amplifier is capable of if the power supply will not provide the power required. Most amplifiers have under rated power supplies. It is up to you to make sure you get the ones that are least under rated if at all.
johnplayerson is offline  
Sponsored Links
Advertisement
 
Reply DIY Speakers and Subs

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page


Forum Jump: 

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off