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Old 25th January 2006, 11:03 PM   #20
Ethan Winer
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Join Date: Oct 2002
Location: New Milford, CT, USA
Posts: 4,805
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Guys,

As Glenn said, we're good friends and neither of us is interested in getting into a "who's d!ck is bigger" competition. But I will address this:

One of the realities of acoustic testing is that all labs do not give the same results, even though the goal is for all labs to give the same data for the same tested material. But some labs tend to measure much higher than others, especially at low frequencies where the different lab sizes and shapes have a big effect. Disparities as large as 50 percent are possible at 125 Hz, and even more at lower frequencies.

This is why RealTraps publishes low frequency data for other products only when we have measured them ourselves in the same lab we do, in the exact same places within the lab room. To do otherwise is not reliable or even ethical, and this is why Glenn removed comparative data. The lab he used (Riverbank) is not the same as the lab we use (IBM), and Glenn understands that a direct comparison between different labs is unreliable, especially at frequencies below 100 Hz where labs aren't even certified to test.

Also, there is acoustic data on the Aygo site, but you have to dig a bit to find it. I assume they used yet another lab...

--Ethan
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