2 PWX-6.5 8ohm mids, Need help with box volume and aeroport size - Car Audio Classifieds!
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Old 05-31-2015, 03:04 PM
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Lightbulb 2 PWX-6.5 8ohm mids, Need help with box volume and aeroport size

I have 2 pairs of 8ohm crescendo pwx-6.5's, I want to build a couple of boxes with 2 6.5's and a tweet for at home. I'm thinking aeroport but i'd rather take someones word for which they perform better in sealed or ported. All I really need is a box volume and port diameter with length.
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Old 05-31-2015, 06:45 PM
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Anyone with some insight?
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Old 05-31-2015, 07:01 PM
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Are T/S parameters avail for those or do you have a way to measure them? [Limp/Arta is free with some cheap parts]
I could plug those parameters into BBP and give you a volume+ port.
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Old 05-31-2015, 07:39 PM
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Just the problem, the manufacturer states no t/s parameters on the webpage or even a sheet with the product. According to the Crescendo thread on here the guy was going to post them but i have not found any. Maybe i can call the company tomorrow. What website do you use with the cheap parts. I seen someone brought up the trial and error method but woods to expensive and i really wouldn't know where to start with building a aeroport box.
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Old 05-31-2015, 07:55 PM
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Here is the link for the free T/S measurement stuff. [Thanks to SPLeclipse...]
Best to try it on a speaker with known value 1st to see it you are doing it right and make sure the pole vent isn't blocked.
How to test T/S easy and cheap
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Old 05-31-2015, 08:23 PM
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Sounds like fun, Thanks for all that.
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Old 06-01-2015, 09:11 PM
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I couldn't find any measurements online either. If you can't get reliable results pulling your own TSPs or don't feel comfortable doing it or whatever, here's what I would do: build a 0.5 ft^3 enclosure per side (2 drivers per enclosure). Use a 2" diameter vent that's ~3" long per enclosure. That should give you a tuning of about 55-60hz. That's a good generic place to start. You might get better results by trimming them down a bit to raise tuning depending on where the fs of the speakers are and how high you plan to cross them over to the subwoofer. It might take a bit of experimenting but 2" PVC is really inexpensive.

If they don't sound right and/or you're not planning to use a high pass crossover on them, pull the port and plug the hole giving you a 0.5 ft^3 sealed enclosure. This may or may not give you a generous midbass bump, but should allow you to at least run full range if you wanted without worrying about unloading too much at bass frequencies.
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Old 06-01-2015, 09:44 PM
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Thanks SPLeclipse for giving me that general figure. I ordered that 1/8" male to male cable and a resistor today so i can take my own tsp's. With your good post with the diagram and program instructions of limp/arta i'm pretty confident I can run the parameters myself.
For anybody reading this and wondering the tsp's for the pwx 6.5's I will be posting it under the crescendo thread soon.
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