Feeling out demand for some kicka$$ fans

mad mikee · 05-02-2003, 08:58 PM

I just got 4 of these:
JMC 1238-12HBA 120mm 130CFM FANS

figuring to slow em down w/ my nexus pwm controller (works wonders on my panaflos). Somehow the circuitry in the fans interacts w/ the nexus so that the fans run itermitantly (on/off time varies w/ setting up to about 70 percent then they kick on 100% of the time)

. Yes they run very well at 70- 100% but at 45 db are a little noisy. Got em for 5.00$ apiece, I would part for even deal and pay UPS ground shipping in cont. USA. Or I will just send em back. Thoughts? :shrug:

TerraMex · 05-03-2003, 04:04 AM

The Nexus in theory can give 15W per channel , which means it (in theory) can go up to about 1.2 A (with a margin). But i have one, and i really dont think so.

However, your fans are rated for 1.2 A which is right on top of the maximum amps value per channel 12 V *1.2 A = 14.4 W... AND each channel is not completely independent of the others . Oh and there is a limit current in the Nexus, which im not sure what it is, but i dont really think that it is 1.2 A*4 .

The fans are too powerful for the Nexus . Try something that doesnt use 14.4W (or more if you reduce de voltage) . I usually go with a 6.x W tops.

Blackeagle · 05-03-2003, 08:16 PM

Sell the Nexus reobus and get a 20 watts per channel Sunbeam unit.

You have the high output fans, you may as well find out what they can do for your temps.

The question now becomes what is the market of that reobus? Or how much do you need to get for it?

05-02-2003, 08:58 PM	#1
mad mikee Cooling Savant Join Date: Oct 2001 Location: US of A!!!! Posts: 146	Feeling out demand for some kicka$$ fans I just got 4 of these: JMC 1238-12HBA 120mm 130CFM FANS figuring to slow em down w/ my nexus pwm controller (works wonders on my panaflos). Somehow the circuitry in the fans interacts w/ the nexus so that the fans run itermitantly (on/off time varies w/ setting up to about 70 percent then they kick on 100% of the time). Yes they run very well at 70- 100% but at 45 db are a little noisy. Got em for 5.00$ apiece, I would part for even deal and pay UPS ground shipping in cont. USA. Or I will just send em back. Thoughts? :shrug: __________________ His PCV2000 DFI ULTRA D (SLI Modded just because) 4200 x2 @ ~ 10 x 260 /1.49 Vcore , G5 + PA160 + 150mm Papst@5V + Maze 4 GPU + mcp350. Temp 36-37(load-2 x D20L) 2x1GB Ballistix PC4000, x800xl 256m, 74G rap + 160G Hitachi SATA , 21" mit/nec 1920x1440 Crt + 19 Neovo F-419 1280x1024 LCD, OCZ Powerstream 600 Hers: (my beloved who lets me do all this) LianLi PCV1000, SD3700 @ 9x300, 1GB GBLA, 250+ 120 SATA, X700pro, 19" Neovo F-419 LCD, another OCZ 600

05-03-2003, 04:04 AM	#2
TerraMex Cooling Savant Join Date: Nov 2002 Location: Portugal, Europe Posts: 870	The Nexus in theory can give 15W per channel , which means it (in theory) can go up to about 1.2 A (with a margin). But i have one, and i really dont think so. However, your fans are rated for 1.2 A which is right on top of the maximum amps value per channel 12 V 1.2 A = 14.4 W... AND each channel is not completely independent of the others . Oh and there is a limit current in the Nexus, which im not sure what it is, but i dont really think that it is 1.2 A4 . The fans are too powerful for the Nexus . Try something that doesnt use 14.4W (or more if you reduce de voltage) . I usually go with a 6.x W tops. __________________ "we need more cowbell."

05-03-2003, 08:16 PM	#3
Blackeagle Thermophile Join Date: Oct 2002 Location: U.S.A = Michigan Posts: 1,243	Sell the Nexus reobus and get a 20 watts per channel Sunbeam unit. You have the high output fans, you may as well find out what they can do for your temps. The question now becomes what is the market of that reobus? Or how much do you need to get for it?

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