Need help finding parameters for my subs

[Gurko]

I know this could be a long shot, but I was hoping someone could help me find the parameters for my subs. I don't have any manuals or anything, but the model is SPL GLW-12. I´ve been googling and can't find all the specs and parameters. If anyone would be sitting on the info it'd be greatly appreciated if you would share it with me.  

Thanks
Gurko

[Joe X]

They give no params but they state 2.25 cubic feet net with 42 square inches of port area.

 

So I guess tune that to 34Hz and you should be in the ballpark.

 

The long way around is extracting the parameters from the sub, there is a procedure to get them or you can buy a device to do the measurements like the dayton audio DATS.

 

I would avoid buying a sub with no stated parameters, it usually means that the company selling didn't make them and don't actually know or to hide the dismal specs of their product, Typically bad companies hide or misstate Xmax which reveals the motor and suspension capabilities.