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Old 04-05-2014   #26 (permalink)
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Default Re: Trying to learn how to build slot boxes

Quote:
Originally Posted by soloxp View Post
I'm trying to learn how to Build slot boxes, this will be my first box with out using (RE Box Cal). Can someone double check to see if the port is right. The box is 15h x 36w x 25d. Looking for around 27-28hz for 2 X12.

Thanks

x12.png Photo by soloxp | Photobucket

x12.jpg Photo by soloxp | Photobucket
Port length is measured down the middle of the port, not along the wall. The one you have pictured would be 28.08".

Quote:
Originally Posted by soloxp View Post
if i understand you, 15x36x24 is the max dimension i that will fix. box will be firing in to the car
With those dimensions, are you going to build the box in the trunk? Cos it probably won't fit in through the opening once it's built.

Quote:
Originally Posted by KickinBlazer View Post


with at least 4.5 inches of space on the port side of box it would effectivlly lower tuning another 2hz....and mount the woofers closer together and away from the port opening inside the box that will help port tuning aswell
You might want to change the # of common port walls to 3, it might change the net volume and tuning. At the moment it thinks you are doing a square port touching only one wall of the enclosure.
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Old 04-05-2014   #27 (permalink)
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Default Re: Trying to learn how to build slot boxes

[QUOTE=666WMD;943927]
With those dimensions, are you going to Build the box in the trunk? Cos it probably won't fit in through the opening once it's built.

That open is 17", (have to put the box in side ways, then turn it) right now I have the same side box in Car with a 8" port. I want to try a slot box and also learn how to tune the port on them.

O and thanks on the port walls...i didn't see that last night. That brings the box to 4.57 net. I can bring down the port length now.

Last edited by soloxp; 04-06-2014 at 03:52 AM.
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Old 04-06-2014   #28 (permalink)
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Default Re: Trying to learn how to build slot boxes

Ok, new stuff...how this look.

[IMG][/IMG]

[IMG][/IMG]

[IMG][/IMG]
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Old 04-06-2014   #29 (permalink)
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Default Re: Trying to learn how to build slot boxes

Looks good to me.
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Old 04-06-2014   #30 (permalink)
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Default Re: Trying to learn how to build slot boxes

Question...the more power you have the smaller the box you need, with in the sub spec. Lower power you go for bigger box. Is the tuning the same. I see a lot of people with big boxes and lot of power.
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Old 04-06-2014   #31 (permalink)
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Default Re: Trying to learn how to build slot boxes

The tuning will stay the same if it's what you want. As a rule, people go with port area being related to volume, but you also have to take into account the subs excursion. In the past most subs excursion was around 20mm, but newer subs like the SD X and Z have increased to 30mm so need more port area to keep up with the increased pressure inside the enclosure.
Seeing people run more power is a sign of underrated subs becoming more popular.
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Old 04-07-2014   #32 (permalink)
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Default Re: Trying to learn how to build slot boxes

I'll like to thank KickinBlazer for stand up late helping me under stand slot ports, I also like the thank 666WMD for helping out and giving me some pointer too.

Thanks guys...

[IMG][/IMG]

Last edited by soloxp; 04-07-2014 at 01:46 AM.
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Old 04-07-2014   #33 (permalink)
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Default Re: Trying to learn how to build slot boxes

You're welcome. Should make those X's nasty.
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