Specs for Versa-Tronics 10" drivers

I bought these drivers about 10 years ago and I can't find any specs on them. I guess Versa-Tronics went out of business? Anyway, I would love to use these things but without the parameters I can't configure the box or the port to match it. Anyone out there have the specs? The model number on the driver is:
GQ255F-PP/8