Impedience Rise

[Bonappetit]

I was curious to what causes impedience rise. Is it certain tones? like does a higher tone cause i higer impedience rise. Lets say like a 46hz tone comepared to a 30hz tone

[kingsuv]

Impedance rise is caused by a couple of things.

Electrical, As the coils heat up the Impedance will change.

Mechanical, As the subs are moving, the pressure will change in the box and raise the impedance.

Depending on how the box is setup will dictate what kind of rise you get.

[ALPINE408]

Impedance rise is caused by a couple of things.

Electrical, As the coils heat up the Impedance will change.

Mechanical, As the subs are moving, the pressure will change in the box and raise the impedance.

Depending on how the box is setup will dictate what kind of rise you get.

and if you wanna know how you system is doing!! or what rise your getting

clamp meter ftw

[ALPINE408]

we had speakers wired to 1 ohm and when we hit it all the ohm rise's it got up to 3 ohms!!!

loss of power right there

[kingsuv]

Sometimes it's more like.... want to know what your system is not doing

[ALPINE408]

Sometimes it's more like.... want to know what your system is not doing

lol ya cause when you find out you gotta tear it all out to fix???

know thats it there and there is more in the system is a killa

[Decaf]

how would you go about lowering impendence rise by box design alone

lets say i got 1200 "rms" @ 1 ohm going to my sub in 3.6cuft@32hz and impendence rises to 2.5ohms, how could i change the box to lower the rise

smaller box/larger box, more port surface area/less port surface area, higher tuning/lower tuning