
Round 5 Testing Notes: New flow chamber 21" length of 8" PVC, egg crate insulated with flow spreader (34 ea 1" x 4" tubes). Tested through an XSPC RS120 radiator, hard mounted with M4 screws and grommets. Air flow CFM not calibrated, only for Round 5 relative comparison purposes. Measured via anemometer vane on the chamber outlet in a 3.5" port, display is shown on far left. Mastech sound pressure meter second from left is unweighted SPL approx. 8" from fan as shown Third meter is measuring fan amperage Fourth meter is fan voltage at plug (Watts = amps x volts) Video via Canon T2i in HD with a Tokina 12-24 lens Audio via Zoom H1 Handy Recorder, manual level 100, low cut on, Wav file format, on tripod in line with fan hub axis 12" from fan with foam windscreen. Octave band (Spectrum) is processed from ymec using DSSF3, spectrum is A-weighted, 1/12 Octave. dbA is also arbitrary for Round 5 comparison only, not calibrated. Audio and Video combined and rendered in Sony Vegas in HD 8MB/S .wmv format before uploading to YT. Suggestion, use the measurement tools as a rough round 5 comparison only, but note that sound level is just that...quantity. This does not measure sound quality which you'll simply have to listen for. Also look for sharp spikes in frequency, these generally are more annoying than a fan that has a higher dBA but smoother curve, etc. Regardless, sound is very subjective, my intent is to provide a good recording for you to listen to and make your own judgments <b>...</b>
Gelid
Wing
12
Fan
Test
Noise
Martinm
210