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rsfaze

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Posts posted by rsfaze

  4. Posted

    your cubic feet is a little bigger than mine, so still 6"x10" for 35hz did you get a complete port or just the flairs? thanks for the help

    My box is indeed just a bit bigger than yours but I checked your box with the port suggestions and it all comes out fine. The port comes with 2 flared ends and the tube itself.

    Glad to help :)

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  7. Posted · Edited by rsfaze

    You could do like I just did use a single 6" aero port. With your box size you could do a single 6" aero 10" long and that will tune you to 35Hz. Then you can buy some 6" pvc and make other lengths and just switch them out depending on if you want a higher or lower tune. The longer the port the lower the freq it will be tuned to. With a 20" deep box you can go as long as 14" on the port length which tunes it to 31hz

    419813_10150634489105000_790294999_9419587_1257297065_n.jpg

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  8. Posted · Edited by rsfaze

    box is built and subs are in forgot to take an updated pic. I'm still in the process of sealing the front side of the box off from the trunk.. wow what a job but they sound dam impressive so far with the single 6" port, kept it at 14" long which tunes the box to 31Hz :D

    419813_10150634489105000_790294999_9419587_1257297065_n.jpg

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  9. Posted

    The PSP flared port is a little more efficient than a standard port.

    That being said, you can get away with using a little smaller but the SA12 has more xmax than a standard 12" sub, i.e. needs more port area.

    The port calculator says 66 sqin of port area for 2 SA 12s at 32hz tune.

    Sure you can try 1 and see how you like it, but I mention it only because if you don't and turn around and add 3 4" ports that will drastically change your net volume and most likely require a rebuild.

    I hadn't taken into consideration the xmax .. doh!

    The single 6 was already ordered and it came in today so it's going for a test run either way. Doing 3 4" does give me port area but still not 66 sqin, only 38 sqin. The one 6 of course gives me 28 sqin so I gain 10sq but also raise my tune a few Hz's.

    As far as net volume with 3 4's its 4.16 sqin and with the 1 6" it's 4.32 sqin.

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  11. Posted

    PSP got back to me, saying that their ports reduce turbulence, thus port noise, but don't effect port speed, and they didn't give any recommendation for how much less port area you could get away with in comparison to a standard port.

    2 4" flared aeros may suffice. vent mach would be ~35 m/s.

    2 4" give me less port area than the single 6". 2 4"s give me 25 inches of port area where as a single 6" gives you 28 inches.

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  19. Posted

    I've tried to tell him they are garage and he should just sell them to me. I guess that idea won't work since he sold me his old single 12" box and convinced me to buy the SA 12d-4 I got in my civic. I need to keep him away from my house or the next thing I will be doing is ordering a 2nd sub!

    lol bass is a drug! and you can't win so just join in already lol!

    ya I know.. I need to get my h/o alternator first, I'm already running @ 2 ohms and the amp is putting out 1200 watts, if I drop to 1 ohm with 2 of these subs, I will be putting out 1800 watts on my stock electrical.. not going to happen :(

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  20. Posted · Edited by rsfaze

    I've tried to tell him they are garbage and he should just sell them to me. I guess that idea won't work since he sold me his old single 12" box and convinced me to buy the SA 12d-4 I got in my civic. I need to keep him away from my house or the next thing I will be doing is ordering a 2nd sub!

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