Space behind magnet question.

[neonrt]

i know its been asked time and time again, but i could not get an answer from searching, just alot of non related stuff. Just need to know if 2" behind the pole vent on a sub will be enough in a sealed box. sub is an fi-q 15"

[KidThump]

That should be enough.

[davesexplorer]

I usually go by the radius of the pole vent (if it has one), try and keep at least that distance away from a surface.

[PV Audio]

According to Dickason, you want at least 3" for a speaker, which is nowhere near the pole vent size of a subwoofer.

[helotaxi]

According to Dickason, you want at least 3" for a speaker, which is nowhere near the pole vent size of a subwoofer.

What was his rationale for that?

[lil azn 06]

3"? JL States all it needs is 3/4 of an inch at the least

[helotaxi]

The minimum is usually the diameter of the pole vent. The reason being that the vent can be restricted for 1) optimum cooling of the motor and 2) restricting air flow through the pole vent will alter the sub's T/S parameters.

[MikeyB]

The minimum is usually the diameter of the pole vent. The reason being that the vent can be restricted for 1) optimum cooling of the motor and 2) restricting air flow through the pole vent will alter the sub's T/S parameters.

x2, thats the rule I have always followed and I have never had a problem

[billabongcr]

3"? JL States all it needs is 3/4 of an inch at the least

JL is a slanderous *****!

[PV Audio]

What was his rationale for that?

To be quite honest, I didn't understand it at all. It's in the 6th ed. of the LDC. The book still still WAAAY over my head, so I couldn't even argue the point if I tried