False Floor for Tahoe

[flakko 5,000+ posts]

or....

http://www.partsexpress.com/pe/showdetl.cfm?&DID=7&Partnumber=330-070

cheaper //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[flakko 5,000+ posts]

Thats my eD12o flat cone, was in there for testing purposes.

The enclosure is for a SE 12

i know that install from somwhere....

 

[supa_c 5,000+ posts]

Weird, because youve never seen that install //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

 

[Bake 10+ year member]

I would try an auto parts store for a temperature sensor. Advance, Auto Zone , and the like. They should be able to help you out if you tell therm what you are doing. Probably cheaper than the audio shop too.

 

[BCONNELLY 10+ year member]

That looks sweet for sure. Have you thought of adding a temperature sensor so the front fans aren't on unless needed.The rear fans will probably exchange the air in that small enclosure pretty well. I know they aren't terribly loud but can be a small annoyance at low volumes. Just a thought...... Very nice work.

What ratings am I looking for in a sensor?

What temp do I want the second set of fans to cut on at?

Thankx for the great info & ideas !!!!

 

[monte_carlo97 10+ year member]

or....
http://www.partsexpress.com/pe/showdetl.cfm?&DID=7&Partnumber=330-070

cheaper //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

Does Parts Express accept Paypal?

 

[flakko 5,000+ posts]

Does Parts Express accept Paypal?

i dun tink so. its only credit card

 

[PRIVATEpastry 10+ year member]

verrry nice.. what kind of window you got there? im looking to make a false floor/hatch an ill be getting some cold cathode lighting but im not sure which kind of glass to use.. i think plexi is to expensive for me

Freckleface.

 

[GCAdidas13 10+ year member]

just have the fans run all the time.

if you need to, pick up some 10W 10Ohm Ceramic Resistors from Radioshack...

if those are computer 12v fans, then they will be running faster then they should anyway... throw in a 10W 10Ohm ceramic resistor and it will drop the voltage to the fans by about 3 volts. I did this to make my 8cm fans run at around 10v instead of 14.4

 

[flakko 5,000+ posts]

just have the fans run all the time.
if you need to, pick up some 10W 10Ohm Ceramic Resistors from Radioshack...

if those are computer 12v fans, then they will be running faster then they should anyway... throw in a 10W 10Ohm ceramic resistor and it will drop the voltage to the fans by about 3 volts. I did this to make my 8cm fans run at around 10v instead of 14.4

wait is it necessary to use a resistor when running 12v computer fans?

and great site privatepastry. ima get my polycarb for my false floor there. cheap stuff.

 

[BCONNELLY 10+ year member]

if you need to, pick up some 10W 10Ohm Ceramic Resistors from Radioshack...
if those are computer 12v fans, then they will be running faster then they should anyway... throw in a 10W 10Ohm ceramic resistor and it will drop the voltage to the fans by about 3 volts. I did this to make my 8cm fans run at around 10v instead of 14.4

Yes they are computer fans, and yes they run fast as a MF!!!

Sounds like you hit the nail on the head, I'll pick up a resistor from Radio Shack..

The fans deff, are doing more than what's neccassary.

Thankx

 

[Bake 10+ year member]

Yeah slowing them down will probably work just as well as a temp sensor. Only two of them running slow may still be enough to keep your amps cool and cut down on the noise too. You will be able to figure out what works best for your setup.

 

[GCAdidas13 10+ year member]

wait is it necessary to use a resistor when running 12v computer fans?

and great site privatepastry. ima get my polycarb for my false floor there. cheap stuff.

it's not necessary, but running them at 14.4v instead of 12v will definitely speed them up, which means that they will not last as long. Fans are usually rated at how many rotations they will go before the motor burns out. Usually in burning out, the fan gets louder, which will not be good especially if they're already louder than normal because they are going faster.

I put two 2500rpm(@12v) 8cm fans in a very small amp rack for my PCX4125 when i discovered that it was nearly hot enough to fry an egg on... since i put the two fans on it (@~10-11v, mind you) the amp never got past warm.

but with 12cm fans you really dont need them to spin fast.. those puppies will definitely move some air at resonable fan speeds. For anyone out there that are shopping for fans, look on http://www.newegg.com for fans that have been rated "silent" or "nearly silent" by people who leave comments.

GL HF

Brian

 

[~Magick_Man~ 10+ year member]

dont forget about the diode....

http://www.bcae1.com/relays.htm

*snip from article*

Quenching Diodes:

Anytime that a relay coil is driven by a circuit that is not specifically designed to drive a relay, you should use a quenching/suppression diode connected in parallel with the relay coil. The diagram below will show the connection of the diode. Initially, you may think the diode serves no purpose because the voltage applied to the relay cannot pass through the diode. This is true when the relay is energized. The diode comes into play when the power source is removed from the relay coil. When power is applied to the relay coil, a magnetic field is created and energy is stored in the coil. When power is removed, the magnetic field collapses causing a reverse voltage to be generated (it's called inductive kickback or back EMF). The back EMF can easily reach 200 volts. The diode will absorb the reverse voltage spike. This voltage, if not absorbed by the diode, will cause premature failure of switch contacts and may cause the failure of power switching transistors. You can use virtually any type of rectifier or switching diode (i.e. 1N4001, 1N4002, 1N400x... or Radio Shack part #s 276-1101, 276-1102, 276-1103, 276-1104).

dont wanna fry anything now do we? //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

~Magick_Man~

 

[supa_c 5,000+ posts]

frying sfuff= not good

Unless you want to, then its fun !