I have a Dell MD1200 Hard Drive case. It has four fans in it. Two in each power supply. Two fans are screwed into each other I guess for increased pressure to pull air from the front of the case. Below is a pic of the back of the case:
http://www.fvstore.com/i/2012/10/14...20-MV-2010-NAS-Drive-Panel-Kit-NO-DRIVE-2.JPG
I tried removing one fan from each case but the system went into alert mode and kicked the remaining fans into 100% usage. The system in general is a screamer. Below are the specs of the fans:
Company: AVC
Model: DBTB0838B2S
Sub Model: P010
80x80x38 (or 80x80x76 together)
DC12V
2.1A
115CFM
4-pin PWM
I was thinking of putting a resistor on the line assuming the Dell case doesn't get upset by the fan speed not being what it wants and attempt to max them out. Based on the before mentioned specs, can someone give me an idea of what kind/size/color band of resistor I would need to slow down this fan adequately to quiet it up? Still going to have the two fans together in the case as I don't have a lot of choice so trying to slow them down enough not to be noisy or to noisy.
Please don't lecture me on this is a server product so is meant to be noisy. It was in a lab, we lost our lab, and now have it sitting in a cube so don't have a choice here.
I've heard different people say use just whatever resistor to change it from 12V to like 7V to make sure it spins up. Others talk about Ohms compared to the amps and say its more than that because it could burn up if it can't handle the power draw. Any help on what resistor I should be looking at and what cable to put it on would be great. if something like this is already buyable as an extension to the fan even better.
Thanks.
JR
http://www.fvstore.com/i/2012/10/14...20-MV-2010-NAS-Drive-Panel-Kit-NO-DRIVE-2.JPG
I tried removing one fan from each case but the system went into alert mode and kicked the remaining fans into 100% usage. The system in general is a screamer. Below are the specs of the fans:
Company: AVC
Model: DBTB0838B2S
Sub Model: P010
80x80x38 (or 80x80x76 together)
DC12V
2.1A
115CFM
4-pin PWM
I was thinking of putting a resistor on the line assuming the Dell case doesn't get upset by the fan speed not being what it wants and attempt to max them out. Based on the before mentioned specs, can someone give me an idea of what kind/size/color band of resistor I would need to slow down this fan adequately to quiet it up? Still going to have the two fans together in the case as I don't have a lot of choice so trying to slow them down enough not to be noisy or to noisy.
Please don't lecture me on this is a server product so is meant to be noisy. It was in a lab, we lost our lab, and now have it sitting in a cube so don't have a choice here.
I've heard different people say use just whatever resistor to change it from 12V to like 7V to make sure it spins up. Others talk about Ohms compared to the amps and say its more than that because it could burn up if it can't handle the power draw. Any help on what resistor I should be looking at and what cable to put it on would be great. if something like this is already buyable as an extension to the fan even better.
Thanks.
JR