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View Full Version : How much space between pole vent and box?



Slo_Ride
12-19-2009, 05:18 PM
wont let me search, keep getting "this page cant be displayed". need to know if i really need much room between back of sub and the box? what happens if there's very little room, like less than an inch?

ciaonzo
12-19-2009, 05:20 PM
Go with the diameter of the pole vent if you can. If you obstruct the pole vent significantly, you will actually change the Qms of the driver and affect cooling.

Slo_Ride
12-19-2009, 05:22 PM
thanks

ciaonzo
12-19-2009, 05:27 PM
No sweat. An old trick I've used before is to grind away just enough wood in that area to prevent restriction but only if I couldn't find a solution with the baffle like a mounting ring to raise the driver out of the enclosure or similar. Sometimes you can't, though. :crap:

Slo_Ride
12-19-2009, 05:43 PM
No sweat. An old trick I've used before is to grind away just enough wood in that area to prevent restriction but only if I couldn't find a solution with the baffle like a mounting ring to raise the driver out of the enclosure or similar. Sometimes you can't, though. :crap:

thats exactly what i was thinking, sanding a little out for extra room, and spacer ring if needed.

ciaonzo
12-19-2009, 05:44 PM
Good luck!

Bobby322
12-19-2009, 07:35 PM
So you use the diamater of the hole in the motor and thats how much clearence it should have?

SicAudio
12-19-2009, 07:40 PM
for almost any sub 2" is the minimum not all subs use that rule tho

ciaonzo
12-20-2009, 01:44 AM
for almost any sub 2" is the minimum not all subs use that rule tho

True, I hadn't considered some drivers don't have flared pole vents and they may want to see even more clearance.

Johnny Law.Lulz
12-20-2009, 01:47 AM
I needed 1.5" baffle to give mine space but i have no pole vent = ) I just cut 2 14.5" x 15" squares of .75 MDF and screwed them on. When i update my build log you'll see what i mean.