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Looking for a 6U rackmount atx chassis.

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40hz:
Seems a bit steep to me...

Of course 90mm gives you an area of roughly 283 square mms whereas 120mm yields an area of 377 sq mms which is about 33% more fan area for a $150% increase in price....I don't know how much better airflow that 33% yields in efficiency since I'm not an engineer - and I'm also not about to calculate
overall fan efficiency where η = η F × η T × η M × η C !!! :tellme:

But unless it yielded a very significant reduction in overall noise levels, I'd likely go cheaper and maybe put some of the savings into a few extra fans I could just run at slower speeds to make up the difference if I really needed the extra airflow. But that's me.

At stage volumes, I don't think fan noise is going to cause much (if any) audience distraction. Sure, in a studio setting you want zero noise. But in a club? Who really cares as long as it's not feeding distortion or artifacts into the house PA mains. The fan noise coming from the average club's cheap-ass overworked HVAC system is usually far louder anyway. As are your guitarist's amp and single-coils - especially if she's rocking P90 pickups.

Interestingly, the RF noise most guitars and guitar amps are prone to goes with the turf - and are generally deemed part of the price you have pay to get "that sound."

Keyboardists might want to think about that a bit... 8) ;D

superboyac:
Good point.  I'll save me the money.  I'll use it for the monitor mixer unit instead, which is going to cost a pretty penny.

Stoic Joker:
This is for a gigging computer.-superboyac (May 16, 2014, 11:46 AM)
--- End quote ---

 :-\ Working with only a vague grasp of WTH that is...I'm going to guess that it doesn't really need to be in a rack ... Yes?

For quiet cooling of a portable machine I would recommend the exceptionally well made and durable Antec 900. I originally bought one about 8 years ago primarily because of the 200mm fan in the top of the case. I'm more than a little bit hung-up on the heat rises bit...so that appealed to me. And it has been running whisper quiet 24/7/365 for the past 8 years. The PSU goes in the bottom of the case and blows its heat outward so it isn't sharing heat with the CPU like most cases that cram them both into the top corner where heat rises to and airflow sucks.

It is a (full sized case) bit heavy, but worth it I think considering all of the fans have 3 position speed controls so you can have a large volume of slow moving air keeping things cool and a bit cleaner to since dust isn't getting vacuumed from across the room and packed into the components by tiny overworked high speed fans that are doing their best to over inflate the cabinet. :D

tomos:
Yeah, I've always read that the big advantage of 120 over 80mm fans was noise reduction - having had one noisy machine with 80mm fans, I dont want to go back there...

This is for a gigging computer.-superboyac (May 16, 2014, 11:46 AM)
--- End quote ---

 :-\ Working with only a vague grasp of WTH that is...I'm going to guess that it doesn't really need to be in a rack ... Yes?

For quiet cooling of a portable machine I would recommend the exceptionally well made and durable Antec 900. I originally bought one about 8 years ago primarily because of the 200mm fan in the top of the case. I'm more than a little bit hung-up on the heat rises bit...so that appealed to me. And it has been running whisper quiet 24/7/365 for the past 8 years. The PSU goes in the bottom of the case and blows its heat outward so it isn't sharing heat with the CPU like most cases that cram them both into the top corner where heat rises to and airflow sucks.

It is a (full sized case) bit heavy, but worth it I think considering all of the fans have 3 position speed controls so you can have a large volume of slow moving air keeping things cool and a bit cleaner to since dust isn't getting vacuumed from across the room and packed into the components by tiny overworked high speed fans that are doing their best to over inflate the cabinet. :D
-Stoic Joker (May 16, 2014, 05:53 PM)
--- End quote ---

sonds good - and has 5/5 with 6,200+ reviews...

40hz:
@SJ - a gigging computer is a PC that usually packs into a 4U fiberglass flight case and is trucked around to music gigs by a musician. Most are built in a ruggedized rack mount form factor which slots very nicely into these cases.

That Antec is nice. But it wouldn't last half a road trip tossed in the back of a band van with a ton of keyboards, amps, and guitars.

@SB - FWIW, Sweetwater has these PCs last I heard. Configured, tested and ready to roll.

But question: why not a laptop instead?  And more to the point, why not a Macbook or iPad? That's pretty much the defacto go-to platform for mobile/road use. Moog has even released  iPad-only based synths. And ProTools runs on Mac...so...

 What apps are you planning on running on it?

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