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Old 03-06-2015, 04:42 PM
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Default Can someone model a few enclosures for me?

I'd like to have some idea as to how things will react when I start shrinking my box down and increasing port area

Box now is 48x22x18. 9.1 before displacement. 7.99 after sub and port displacement (.5 subs and .6 port)

Port is 10" aero 14.5" long

New boxes will be..

48x24x16 w/ 10" x 16.5"L port (.75 disp)

48x24x15.25 w/ 10" x 18"L port (.81 disp)

subs are 2 18" Zv3's with nsv2 coils. Power will be roughly 12-14kw
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Old 03-07-2015, 07:27 AM
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Even educated guesses will be nice. I've never gone with this much power nor this much port area so I'm going in blind on this one and really don't want to destroy softparts right away
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Old 03-07-2015, 07:54 AM
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Burps or daily?

Edit: nvm I can tell. I can break out the sims once my daughter falls asleep for her nap
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Last edited by So Low; 03-07-2015 at 07:57 AM.
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Old 03-07-2015, 08:07 AM
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Quote:
Originally Posted by So Low View Post
Burps or daily?

Edit: nvm I can tell. I can break out the sims once my daughter falls asleep for her nap
Thanks. Yeah it'll be a daily build but I definitely won't be playing full tilt all the time, unless the subs magically handle it
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Old 03-07-2015, 08:36 PM
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(9.1*12*12*12)/(46.5*16.5)=20.5 ok those were external dimensions, (double baffle?)

So [email protected] lowers tuning by about .5 Hz
[email protected] I see you want to keep tuning the same through all options

Ok well ill start with the obvious, your smallest box will handle more power, and the larger box limits the total power you can potentially run. Keeping the same port area from the larger box will make the small box/ port more efficient given the smaller internal volume than the larger. The last option, would net about 750 watts more usable power, but only a small db gain mostly on higher notes. The port will eventually be the limiting factor on getting the most spl on the sub 40hz notes. Cone control is good with these subs and they can handle 12k mechanically in all of these options but you won't gain much beyond about 6k total power. But headroom is nice.

Now, you have sweet subs, I had zv2 but never the zv3 for some reason, and I like your setup. I'm just suggesting a simple alternative. Try and switch from one 10" port to multiple ports. Three 6" would give you a bit more usable power, like a kW, but two 8" ports would allow double the usable power compared to your exact current specs. Two 25" long 8" aeros would give you another 3dB of potential gain and more low end, as short as 18" long 8" aeros to give you a 4dB gain over your current response, but with about the same bottom end.

On 12kW you will reach xmax around 26Hz so don't play around way below tuning full tilt no matter what design you want to use. But on 8k ish that dual 8" aero would get loud.

I hope that all makes sense, I was just kind of jotting stuff down as I went. Lmk if you have questions
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Old 03-07-2015, 08:57 PM
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Thanks for the help..

So the 7 cube option will handle the most power and be the most efficient because of the larger port area? I almost never play below 30hz and would never think about playing 26hz unless it was by accident (which happens with new songs). I tune to 35hz because I enjoy 33-40hz most

The 2 8" aeros aren't possible unfortunately. The 7 cube box is only 15.25" tall, so they're not stackable nor will they fit below the subs (sub up port back)

When you says 6k, do you mean each or 3k each? I really wish I could borrow some amps to do testing to see where I stop gaining power-wise before I buy a pair of 8k's. If I do stop gaining at 3kw each, I won't be too happy lol
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Old 03-07-2015, 09:00 PM
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Yea i meant 3k each. Rule of thumb for the aero port is a max of 3dB gain over a similar sized port without flares... But to get more spl eventually you will need more port. But if it's for daily you can do better hair tricks with more port velocity
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Old 03-07-2015, 09:20 PM
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More port than 11 sq/inper cube?? I always use flares no matter what size aero

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Old 03-07-2015, 09:26 PM
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Well to a certain point you just make a typical burp box, the more port the more spl. Like two 12s with a 12" aero. They eat a lot more power before that port air gets fully excited, but the overall spl from the port is higher. But if you can't fit it you can't fit it. I didn't have any pics to go off of so i was just guessing but i see for the space you have been quite efficient.

If you shrink the box a bit it will make the subs handle more power, and a whole cube can mean a lot. It could end up exactly the same, only way to know is to try it
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Old 03-07-2015, 09:32 PM
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What can I say im just a multi port kind of guy



I'm also a big fan of swapping ports for different applications if that's something you haven't thought of.

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Last edited by So Low; 03-07-2015 at 09:35 PM.
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