Camplo Posted August 31, 2021 Report Share Posted August 31, 2021 Im having an issue where my acoustic elegance drivers (15m and 18h+) are showing 75% bl any reason why this would happen, using the dats v3?? Quote Link to comment Share on other sites More sharing options...
SME Posted September 2, 2021 Report Share Posted September 2, 2021 What is your measurement apparatus like? Is the woofer measured down-firing or side-firing? And is it mounted on a well-anchored, large open baffle? Or is it free air? These things might make a significant difference, which may be more pronounced with some drivers than others. I've only ever measured my drivers the "wrong way"--- facing up on a table top, and my BL measurements almost always come in a bit below spec. Except once, when I tipped and carefully held a driver in a horizontal orientation for an impedance sweep so I could compare. I did read a higher BL that way, but not as high as spec. I suspect a properly anchored measurement jig would close the rest of the gap. Either way, my final product(s) have tended to perform closer to manufacturer's specs, so I just accept that my measurement methods tend to low-ball BL. Quote Link to comment Share on other sites More sharing options...
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