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Old 9th February 2006, 09:37 AM   #1
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Default Poll: Whats your port velocity

There is alot of decussion on port velocity and what is an acceptable limit. 17ms 25ms 34ms are what im hearing alot.

so a quick poll

whats your peak velocity?
What port and size?
do you hear noise at peak?
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Old 9th February 2006, 02:25 PM   #2
vetkilr is offline vetkilr  United States
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Looks like 40 to 100m/s is What Im to expect in my car.

Cant hear port noise over Bass and normal rattling in my Car.

In my house Im at 20 m/s and I cant hear a thing cause I dont usually Max my house system out enough to get full SPl's
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Old 9th February 2006, 11:07 PM   #3
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my port velocity.... 0m/s

currently sealed, going with passives in the future.


collo did a thread about port velocity you can find here:
Flared ports and turbulence

I'd agree with vetkilr that in a car port noise becomes far less of an issue, but I havent done any actual tests... I just know I've heard quite a few ported boxes in cars that chuffed when you listened to them 2 feet away through the open trunk. With everything sealed up and inside the car, rattles were the #1 problem and the sound of port chuffing was inexistant
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Old 10th February 2006, 02:50 PM   #4
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With one of my basscabs I was able to here the portnoise around a simulated 31 m/s (it was probably a little bit higher tho), while the SPL from the speaker was far beyond common house use.
With the mid and high into the mix the problem was solved.
Since then I use 30 m/s as a limit for PA and 20 m/s for hifi and alike.

Wkr Johan
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Old 10th February 2006, 11:39 PM   #5
simon5 is offline simon5  Canada
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Hey BassAwdyO

Wondering if you're gonna order one of those 91 dB/1m/1W woofers from Ascendant?

IIRC you said you wanted something >90 dB/1m/1W
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Old 11th February 2006, 03:15 AM   #6
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no plans on buying any woofers for a while here...

My next set would be some 18" pro drivers with hopefully better than 95db@1w 1m
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Old 13th February 2006, 08:20 AM   #7
simon5 is offline simon5  Canada
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Some Aurasound stuff then I guess...
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Old 14th February 2006, 01:52 AM   #8
tade is offline tade  United States
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0m/s

: )
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