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Pyramid 1286X Specs - Click HERE for Original Thread
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).

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