Actual sensitivity of the 3015LF?

[AchtungBass]

It's listed everywhere as 99.8, but I seem to remember some discussions that have said it's mis-listed & is really lower, maybe around 95 or 96.

Can anyone confirm one way or the other?

 

[Passinwind]

Eminence changed the spec sheet a few years ago (it's available on their website), they say 98.4. WinISD and other modeling programs put it at 96.5 or so.

 

[AchtungBass]

Thanks.

From your experience, do modeling programs usually put the the sensitivity of all drivers a bit less than the published number?

 

[Passinwind]

Thanks.

From your experience, do modeling programs usually put the the sensitivity of all drivers a bit less than the published number?

Yes, unless you're talking something like horn loaded cabs.

 

[AchtungBass]

Yes, unless you're talking something like horn loaded cabs.

Nope, not horn loaded boxes.

So generally then, even though the modeling programs put driver sensitivities lower, they remain more or less relative?

 

[AstroSonic]

The modeling programs provide an accurate sensitivity for cone type direct radiators in their pistonic range. Most drivers exhibit some rise in sensitivity above the pistonic range. The manufacturers usually base their ratings to some extent on this zone of increased sensitivity. Some of this may actually reflect real, useful increased sensitivity, but the upper portion (which usually has the highest apparent sensitivity) is highly directional (can be heard only on-axis), and so is of little use. If the driver is used only in the pistonic range, the model derived sensitivity is most correct. If the driver is used to above the pistonic range and the sound is usefully dispersed (hence audible over a wide listening area), a sensitivity figure blending the two regions (but not including the hf peak) is a more useful figure.

 

[AchtungBass]

The modeling programs provide an accurate sensitivity for cone type direct radiators in their pistonic range. Most drivers exhibit some rise in sensitivity above the pistonic range. The manufacturers usually base their ratings to some extent on this zone of increased sensitivity. Some of this may actually reflect real, useful increased sensitivity, but the upper portion (which usually has the highest apparent sensitivity) is highly directional (can be heard only on-axis), and so is of little use. If the driver is used only in the pistonic range, the model derived sensitivity is most correct. If the driver is used to above the pistonic range and the sound is usefully dispersed (hence audible over a wide listening area), a sensitivity figure blending the two regions (but not including the hf peak) is a more useful figure.

Good info. Thanks berry berry much.

 

[bgavin]

Eminence changed the spec sheet a few years ago (it's available on their website), they say 98.4. WinISD and other modeling programs put it at 96.5 or so.

The 3015LF driver changed substantially.
The new version requires a much larger cabinet than the older driver.

New Qts is much higher (0.46). Qes, Qms changed also.
Voice coil DCR and LE are different, lower Bl in new version.