all wired up and assembled...just a few Q's

[tsunami]

well i finally finished the install and everything is wired up and working...it is all installed, though the sub is just sitten ghetto style on a peice of plywood across the trunk until i can go get a piece of mdf to lay over my amps... as my amps will be in a closed environment...(pretty much anyways) how much air travel should i have... i was looking at two vantech 120mm fans that move 50 or so cfm.... setting them up for a push pull... i have 3 300watt jl amps, 2 slash series and one e series.... also i have some horrible noises comming out of my right side driver... i am not sure if it is some sort of rattle or did i some how (please god no) blow the speaker (boston Z6)

edit** link for fans http://www.xpcgear.com/12enulquietr.html

tia

 

[chuyler1]

Have both fans push...the air will find its way out eventually.

 

[tsunami]

Have both fans push...the air will find its way out eventually.

yeah i wouldn't think that would cause any probs by both pushing.... you think that would cause enough air flow over something like this...

 

[simmadown]

Set both on pull, and leave a small opening on the opposite site of the enclosure. Make sure the air near that opening is cool. Proper cooling always draws air across and does not push it across, think of a computer, and cpu, every fan in the box should pull air through the box and out. Think of a room with smoke, like a kitchen, all those "ehaust" fans pull air to remove it, they dont try to add air, even when the system isnt enclosed, more effective, more effecient.

CiaO

Matt

 

[simmadown]

check this links for some info

http://www.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/cooling_guide.pdf

its about PC's, but you can getsome info

 

[tsunami]

push...pull....push pull... i would think any of these set ups would work, each has its own pros and cons... the biggest question is are two 50 cfm fans enough? the amps are in a 3inch high space and the length and width are about 40x35 iirc....

 

[1sty]

Set both on pull, and leave a small opening on the opposite site of the enclosure. Make sure the air near that opening is cool. Proper cooling always draws air across and does not push it across, think of a computer, and cpu, every fan in the box should pull air through the box and out. Think of a room with smoke, like a kitchen, all those "ehaust" fans pull air to remove it, they dont try to add air, even when the system isnt enclosed, more effective, more effecient.

CiaO

Matt

Ding, Ding, Ding we have a winner

 

[chuyler1]

When you want to pull hot air directly off the stove you place an exhaust fan over the stove in your kitchen. When you want to pull humid air out of your shower you place an exhaust fan right above the shower. However, when you want to cool down an entire room you place a fan in the window and blow air in. If you turn it around, it will stay cool by the window but not necessarily in the corners of the room.

Exhaust fans work on PCs becuase they are placed close to the CPU and power supply which generate the most heat and the cpu has its own fan to keep air moving across its heatsink. With your amps, there is no specific location that the heat comes from. The entire heatsink will get hot. Therefore, I still recommend blowing air directly over the amps and let the air find its own way out.

But I'm not going to argue further about it. Its all fluid dynamics. Theoretically, if you have a perfectly sealed chamber they should equally cool the amps. I would just want the most air velocity centered directly over the amps (like a CPU) to keep replenishing the air in between the heatsink fins.

 

[tsunami]

so ummm do you guys think that 2 fans pushing 50cfm will be enough or should i get 4????

 

[chuyler1]

Don't forget, you will need a relay to power the fans. You don't want them running when the car is off and the remote-turnon-lead won't have enough juice to power two fans let alone four.

I think two would be fine but if you go on long trips and listen at full tilt all the time, I'd go with four.

 

[tsunami]

yeah its going through a relay.... got a nice 4 out 12v relay from mcmaster b/c no one else had anything even radio shack... going to run some neons (rice i know) and the fans off of the relay....i am using the stereo remote turn for the pull in voltage then i am using the extra lead from my distro block to power the fans/neons/remote turn ons..... there is no way i can listen to that thing full tilt for more then a little bit... otherwise i will be deaf before i am 30...so 2 fans it is....

 

[chuyler1]

Plus, you live in Maine. If you were in the South it would be a little different.

 

[tsunami]

(lol)...... i couldn't stand the heat of the south... its been great here lately.. 75-80 low humidity during the day and down to 50-55 at night... that is absolute paradise!!!

 

[1sty]

When you want to pull hot air directly off the stove you place an exhaust fan over the stove in your kitchen. When you want to pull humid air out of your shower you place an exhaust fan right above the shower. However, when you want to cool down an entire room you place a fan in the window and blow air in. If you turn it around, it will stay cool by the window but not necessarily in the corners of the room.

Thats only becuase most people don't have a large hole in a rooms ceiling and a fan in it.
Luckily My parents actualy did. We had a moster ceiling fan that fed up into the attic. That damn thing would pull the outside air into the house like nothing else I have ever felt. If you had only open one rooms window, that fan would draw the air all the way through the house to continously cool the entire area along the way, and not just the small area where the same size fan would cool. The problem is obviously, the fan will only cool the area within its reach where as a pull fan will draw from whatever source it has to draw in the same air but will properly route it through the room or amp rack.

 

[tsunami]

so i was driving around and those heat sinks were hot as hell when i checked them.. granted i was playin it louder then i had before but i am now thinking i may need more then 2 fans.... what are my other cooling options besides some pc fans????

 

[chuyler1]

Even if they are in open air they will get hot as hell.

 

[tsunami]

yeah they are in open air now.... haven't had the $$/time with work lately to finish up the top and to figure out what i want to do for a sub... any type of air movement i am sure will help, was just curious if pc fans would be enough...

 

[chuyler1]

If the amps start shutting off...that's the first sign that they are not enough.

 

[tsunami]

(rofl)

really...??... hahaha... nah i hope it doesn't get that hot... but they all have thermal protection and the only one with out the nice heat sinks is the one driving the tweeters so there shouldn't be a big draw on it...