It is quite obvious the stock P180 has more or less the same acoustic characteristics as a case that has been highly modified to reduce noise. While the intent of the statement is to obviously criticize Antec’s design, it actually has the opposite effect. The fact that this case is “merely” the equivalent to a case which has been highly modified to reduce noise means that the average person can simply purchase a case which has very good sound isolation without the need to do any work whatsoever.davidstone28 wrote:I have to say that I don't think its any quieter than my previous case - an aluminium (a big SPCR no-no) Lian-Li V2000 case - with suspended HDDs, Acoustipack Deluxe damped sides / HDD blocks, rubber screwed 2xNexus 120s + 1xNexus 80mm fans.
Is this a silent case? Apparently not, and as many posters have stated, it was never meant to be. I think it is necessary to state that the only time a PC is truly silent is when it is off, without going to extreme measures like that Zalman silent case (don’t know it’s name, only heard of it). So what can you do with a powered down computer? Nothing.
As MikeC stated, it is not the case that produces noise, but it is what’s inside the case that does (when the PC is on). That being said, there a minimum threshold of noise that produced by all of the components. Each component may be quiet enough not be heard individually, but taking into consideration all the components there is bound to be some amount of “leakage” that will end up being audible.
For example, you are in a room with someone who is whispering on the phone and is barely audible. Now add another, and then another, and then a few more. Each additional person speaks with a whisper on the phone and one person is no louder than another. When the room is filled with10 people, well it’s no longer as quiet with only one person on the phone is it? There is a cumulative affect.
Each component produces a minimal threshold of noise from vibrations. The vibrations can be minimized, but not negated passively. A suspended hard drive still transmits vibrations through the air and some of the vibrations will make it out of the PC case. A thick enough case will have increased dampening potential, but will also increase the cost.
Based one what I’ve read, the P180 seems to be doing a good job for what it was designed for. Asking any more from it may be impossible without modifications. I believe someone mentioned the law of diminishing return. That is quite true; it is cheap and easy to make a quieter PC case out of a noisy one. But as the case becomes quieter and quieter it comes more difficult and potentially more expensive to achieve your goal. As an example, say a case has a really loud 120mm fan okay, spend $18 + shipping to get the Nexus 120mm Black & White that’s rated at 16dBA. What, still too loud? Need something that can move a decent amount of but produce less than 16dBA of noise? Well that’s going to cost you more, a lot more. There is link at SPCR to a spreadsheet of fans that someone has put together (I don’t remember which post). I was searching for a particular 120mm fan; I think it was NMB Tech DC4710NL-04W-B20-P-00 which was tested at 8dBA and 24.6 CFM at 5 volts according to the spreadsheet. Yeah, I found it; the going price was $50 before shipping and no pin connectors from the manufacturer.
To summarize, noise is a given, you can’t get away from it, the more you want to lessen it, the more time and money it will cost. But it will still be there.
Before I end my post, I want to offer a potential and expensive solution. That is active noise cancellation, place microphones inside the computer case that is connected to noise cancellation electronics that will output white noise to speakers within the case that cancels the noise from within the case itself.
Sounds intriguing.
Sounds expensive.