Actual T/S data for W22EX and W15CY?

[Jed]

How close are the published specs for these drivers? Does anyone have actual measured data he/she can share? I'm working with someone on a simulation for RS28a, W15CY, and W22EX 3-way. We want to see how compatible the drivers are as a system. I've heard W22 is really 88DB, not 90?

Jed

[Jonasz]

According to the data from Seas' homepage it's actually 87.5 dB.

http://www.seas.no/excel_line/excel/E0022.pdf

Jonas

[JonMarsh]

Keep in mind some production tolerance of drivers exist, due to a variety of factors, incl. measurement tolerance!

For example, both the RS180 and 850439 are rated at 87.5 dB (let's not go into "at what frequencie(s)? for now), and there's close to a 1.5 dB difference on specific samples between these two. That's why many speaker manufacturers use a QC sample for a complete speaker system and trim individual driver levels to get production units as close as possible to the reference design. A half dB over a couple of octaves isn't a large difference, but it is audible.

Then, there's your room setup and room acoustics, which throws an even bigger monkey wrench into things... especially for closed box speakers.

~Jon