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    SA 12 Enclosure Design

    So plugged my drivers in WinISD pro and playing around I've found that a 10ft^3 enclosure tuned to 28hz gives me a mostly flat response with a gain of 5db at 28hz and down 5db at 25hz. I'm wondering how accurate this program actually is, do these numbers sound reasonable? I'm running with a 1200 watt saz1200d so I need a very efficient enclosure and I want it to get lowww. My other question would be what do you guys use to measure cabin gain? I know about REW, wondering if theres anything better out there?

    I want to measure my cabin response because I need to be able to factor in my peaks and nulls in my car to get a flat response between 40-80hz while maintaining a nice gain in the lows.







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    Re: SA 12 Enclosure Design

    10 cubes for a sa 12?



    Bought from Underfire, Stephens30228.

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    Re: SA 12 Enclosure Design

    Dual sa12's sorry. Whelp that's what WinISD is telling me and all the driver parameters are entered correctly. From my dabbling in home audio it sounds pretty spot on for the extension I'm trying to achieve I just wanted to make sure the program is accurate.




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    Re: SA 12 Enclosure Design

    I think your looking more in the area of 4 cubes.



    Bought from Underfire, Stephens30228.

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    Re: SA 12 Enclosure Design

    yea i think theres some kinda of flaw ...6 sa12.s would fit a 10 cube box lol...for a pair ur looking at 4-4.5 depending on goals..maybe on the bigger side since ur underpowering them ...and i would tune in the range of 32-34 ..i wouldnt tune in the 20.s jus my .02




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    Re: SA 12 Enclosure Design

    Its currently in a 4.2ft^3 box, prefab tuned rather high, I'm not fond of it at all. I guess I should say I'm shooting for ground pounders here, ideally I want the car to measure flat at 20hz... I love air moving bass not necessarily going for the highest numbers.




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    Re: SA 12 Enclosure Design

    go 4.5 at 31-32 if ur gona keep that amp ..hit up @Buck ; he can design u a good box




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    Re: SA 12 Enclosure Design

    air moving bass ..u mean like this???
    quick hdc4 shirt trick




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    Re: SA 12 Enclosure Design

    ^^^ Aye

    I know the amp is kinda weak for 2 sa, I'm planning on selling it at some point and upping to a saz3000 when I get the funds for it and running a second battery.




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    Re: SA 12 Enclosure Design

    4 cubes @ 32 hz with 14-16 in^2 port area.



    Alpine - ASE (local) - Batcap - C&D Tech - CT Sounds - DC - eD - Excessive Amperage - Rainbow

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    Re: SA 12 Enclosure Design

    Where do you guys get these numbers from?




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    Re: SA 12 Enclosure Design

    From personal experience with the actual driver. I will second bucks recommendation but you couod take the box up to 5cubes if you wanted to



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    Re: SA 12 Enclosure Design

    Ya, you could take the box up in size as far as what the woofer will handle but I don't know if I would to it because you might lose some of that high end if you want to really get up to 80 hz.



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    Re: SA 12 Enclosure Design

    Granted I haven't measure it yet but from what I noticed my car has some peaks in the upper frequencies so a box with a dip in that range wont hurt much. How do you calculate the port dimensions for tuning? I'm not really trusting winisd at this point. Going to talk to some guys in my area but I'm thinking between 5-6 cubes gross volume is going to be my magic number for what i'm trying to achieve. Based on some numbers jacob had posted regarding box size to power handling for the sa8 it looks like to push the driver to its mechanical limits on 600rms would need an enclosure of 3.125ft^3 net volume.




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    Re: SA 12 Enclosure Design

    Yes upping volume will drop off sreaply the larger the enclosure gets but that can be fought some with the port.



    2002 suburban
    Security System Code alarm
    Electrical Dc power sp270 7 deka 9A31's and lots of 1/0
    Headunit pioneer 880prs
    Amps 2 Sax125.2 front stage crossfire xs8k@.5
    Wiring lots of 1/0 stinger, tsunami
    Mids & Tweeters 2 sets cdt m6+ mids 2 sets cdt tw25 tweets
    Subs 2-18" nightshade v2's d2
    System DetailsDaily driver.

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