Dayton WT3 woofer tester help.

[NB50 206]

I recently picked up the WT3 and have been playing around with it a bit. But I am a little unclear on a parameter I am supposed to enter in.

When having it calculate VAS you need to enter in the Piston Diameter, What should I enter? ie 15 for a 15" driver, 12 for a 12" driver etc.

OR

Should I enter in a calculated diameter from the Sd? Example a 15" driver is ~12.64", 12" driver ~9.73" etc.

Thank you.

[95Honda 486]

I think it should be the diameter meaured from roughly 1/2 way into the surround. But I would email Parts Express to be sure.

[NB50 206]

I sent an email out to dayton, just waiting on reply. I'm measuring a 15" driver and there is quite a bit of difference between entering 15 and 12.64 and the stated spec.

Manufacture stated spec = 127.8L

entering 15" = 152.5L

Entering 12.64" = 76.89L

[95Honda 486]

What happens if you enter the number by measuring from the mid points of the surround?

[NB50 206]

What happens if you enter the number by measuring from the mid points of the surround?

That is the 12.64" calculated from Sd, taking a tape measure to the driver it is so close I would probably pick 12.75".