Quote:
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Originally Posted by unregistered
what are the outside dimensions of your box ?
how many watts you dumping ?
what's the noise level (1m from box all 4 sides) ?
how many fans, and of what model ?
where is the pump ?
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If I might add:
what ambient level are you trying to be sub-to?
Diameter and length of ducts?
Guesses as to actual air flow rate?
Frequency range you're trying to eliminate?
Enclosure material? MDF? Bracing needed?
Internal surface treatment (absorbtive? diffuser? what?)
Material duct(s) is/are made of. Also lined?
If you'd like to tell everyone here that you have answers that nobody else has come up with, then, well, some of us, at least, expect you to present at least
some of those answers.
If you tell people to "start GOOGLING" as though nobody here knows how to do that - and as though all info on the web was good (diagram on aerofoils in the first link was wrong, BTW - unless it was illustrating failure-through-separation, which the text did not mention), expect to get questioned a little bit. One of the reasons the info here
is good is that posts like this (all claim and no back-up)
do get questioned. If you're shy about quoting temp, wattage, flow, or noise numbers, well, good for you - but these are all things you can make an educated guess about - so long as you tell everyone how you arrived at the guess.
As a side issue - maybe it makes sense to start a separate "ducting W/C systems for low noise with good performance" thread?