Broke down. Got a duplex.

[Alien_Shore]

WT2 is more reliable than WT3/DATS ( different maker with a different way of measuring ) .
REW has a TS parameter measurement area ( you need to wire-up a small box ) that uses the same method as WT3 .
Personally, I wouldn't bother GPA with this type of thing until you've gotten similar measurements from at least one other measuring program.

Thanks Earl. I wanted to talk to Bill again simply because when I spoke with him just prior to GPA shipping the speaker back to me, he indicated that they used 16 ohm parts for the re-cone and new 'phram. I have been looking at some of these time-aligned crossover designs for the 604, so I'll just need to adjust for 8 ohm voice coils.

- Every once in a while it is worth the diy hobbyists time to check ( recalibrate ) the validity of ones measurements by using another method ( really , it's simply part of the scientific method ).
- For TS parameters ( when checking these "all-in-one" devices ) one can use the old standby method outlined here !
- I believe that verifying Re, Fs & Qts ( Qms, Qes ) is enough to know where ones device stands .

I love the sound.westhost.com site. So much great information. [edit: westhost was taken down in 2016. I linked the internet archive copy here]

Totally agree, and while I have no reason to doubt the accuracy of DATs, I will perform a validation/calibration on one of my drivers to be sure.