ok so i want to do aero ports for my box, im having build. but i was suggest for two 4" aero ports w/ a 2.5 cube internal box tuned to 32hz. but i noticed when i put it into the PSP calculator thing that the ports would need to be longer than they come. so i was wondering would there be a difference if i use two 3" aero ports vs two 4" aero ports? thanks
edit - also when i put in the numbers i need for the PSP calculater when it is talking about the port length and stuff is it talking about each length together or how long each should be.
First thing.... What equiptment are you running??
There is a perfect ratio for every setup... Running 2 4" aero's for a single 8" Kicker CVR will be bad... running 2 4" aeroports to 2 18" MT's would be BADDD...
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The goal here is to achieve laminar flow. I have a rather long, mathematical process through which you could begin to determine this, but would need to make some modifications to consider a flared port. I can get this up for you if you'd like.
Bigger port is good but not always the best thing to do. Bigger ports will result with a longer port also...hence a increase in port resonance. When applied to a vehicle...port resonance can give an increase in spl. However...the too big of a port will decrease vent exit velocity. The right size port will result in highest velocity and will give great output.
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