Pyramid 1286X Specs

[lpmusix]

Hey,
I've got four of these subs that I want to build a box(es) for. Does anyone know the Qts, Vas, free air resonance, and specs for these that you need when building the cases?

Any help is appreciated!
Thanks

 

[BillFitzmaurice]

You'll probably have to measure them yourself; like many autosound drivers Pyramid supplied specs are more often than not quite far from actual measured.

 

[lpmusix]

how would I go about measuring those values myself?

 

[morbo]

You could try this:

http://sound.westhost.com/tsp.htm

 

[lpmusix]

I think I'll have to agree with BillFitzmaurice, I emailed Pyramid asking for the specs and they say:
Qts 0.62, Vas2.94, and the Free air resonance: 26.7

I guess I will end up measuring myself, that Qts is insanely high, unless that means something that I don't know (say open back or something).