The Fed Ex truck brought a pair of nice boxes yesterday.
Inside are my factory-new 416-8Cs from Great Plains:
Here is the impedance plot: (not broken in whatsoever)
If you can't make them out, here are the (non-broken-in) 416-8C T/S parameters:
Re = 7.46
Fs = 24.22
Qts = 0.305
Qes = 0.321
Qms = 6.904
Le = 1.478
Mms = 68.56
Vas = 21.19
Zmax = 149.3
Got them in my 816 enclosures right now breaking in, then I'll re-run the TS sweeps and do some FR measurements.
The cones are incredibly light; I'm not sure about the Mms and Vas numbers (I used the delta mass method), so I am going to build a test box to test them out that way. What size box would work?
Here's the default WinISD box sim for the (non-broken-in) driver:
It's indicating an 8.6 CF vented box tuned to 24 Hz. This will get re-measured as well after a healthy break-in period.
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