Finally made my sub decision.

[inteva6184]

I am super super excited to get them installed. They are two sundown sa-8 v3. No idea where I am going to put them but I have them!

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[BOOMINGRANDPA 5,000+ posts]

nice.. I always think it's funny when magnet is as big or bigger than the cone lol..

 

[inteva6184]

So I modified a box I already had for about the 5th time and I am pretty dissapointed so far. I am not sure if its any louder than my single 10 but it does play a little lower. I have to give it a better listen tomorrow and see if maybe my box is so far off its killing the subs but I am not optimistic.

 

[wew lad 5,000+ posts]

enclosures cant be rushed dont be afraid to ask for advice and get the box built appropriately. lots of guys on here who know those subs in and out

 

[CSCStang]

What's the current box size? Pics of the box?

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[inteva6184]

It is made with 3/4 mdf and the external dimensions are 20x14.5x13.5. The port is 3x3 and 13 inches long. The subs face up and the port face the rear of the truck. "][/url] I was trying to enter the info into win isd but I couldnt find the z or sd. For the z I just put 4. I know the box is ghetto but I was excited to hear them and I figured the dimensions were close enough to give me some bump.

 

[Jeffdachef 5,000+ posts]

It is made with 3/4 mdf and the external dimensions are 20x14.5x13.5. The port is 3x3 and 13 inches long. The subs face up and the port face the rear of the truck. "][/url] I was trying to enter the info into win isd but I couldnt find the z or sd. For the z I just put 4. I know the box is ghetto but I was excited to hear them and I figured the dimensions were close enough to give me some bump.

your box airspace is fine but your port is out of wack and tuned too low you are at 29hz right now. Port out of what means WAAAY too small, you are at 4.8 port per cube, usually need 9 to 13 maybe 8 if you flare out like an aeroport. This means you will run into major compression and lose a lot of output aka your subs are choking right now along with you pigeonholing yourself out of output tuning that low, its a horrible combo and its no surprise you arent loud at all because of this.

subs forward, port to the passenger side with the box close to the passenger side about port width away and use a 4 inch aero port this time tune it to 35-36hz.

If you mean 3 x 3 as in a wooden square port, thats even worse like reaaaaly bad.

 

[BOOMINGRANDPA 5,000+ posts]

yeah dude port diff to small this coming from a guy whos port is to small lol..

 

[inteva6184]

your box airspace is fine but your port is out of wack and tuned too low you are at 29hz right now. Port out of what means WAAAY too small, you are at 4.8 port per cube, usually need 9 to 13 maybe 8 if you flare out like an aeroport. This means you will run into major compression and lose a lot of output aka your subs are choking right now along with you pigeonholing yourself out of output tuning that low, its a horrible combo and its no surprise you arent loud at all because of this.
subs forward, port to the passenger side with the box close to the passenger side about port width away and use a 4 inch aero port this time tune it to 35-36hz.

If you mean 3 x 3 as in a wooden square port, thats even worse like reaaaaly bad.

Well being that I still need to use my truck as vehicle I dont have the option of front mounting the subs or mounting the port close to the passenger side. Possibly I could do the port external and get it closer to the passenger side. The box is going to be made to sit in the center of my truck in between the front and back seat with the subs facing up. With that being said I can easily build a box thats 15X15X15. Thats 1.42 cubic feet I dont know if thats to small once you subtract the sub and port volume. If it is I could build the box so it also goes under my seat which would bring the box up to 1.9 cubic feet. So given my limited space what size would you make the box and with what size port?

 

[Boomin_tahoe 5,000+ posts]

Get with CSCStang on a design for ya.

 

[CSCStang]

Well being that I still need to use my truck as vehicle I dont have the option of front mounting the subs or mounting the port close to the passenger side. Possibly I could do the port external and get it closer to the passenger side. The box is going to be made to sit in the center of my truck in between the front and back seat with the subs facing up. With that being said I can easily build a box thats 15X15X15. Thats 1.42 cubic feet I dont know if thats to small once you subtract the sub and port volume. If it is I could build the box so it also goes under my seat which would bring the box up to 1.9 cubic feet. So given my limited space what size would you make the box and with what size port?

Add 1/2" to each dimension and go with a 4" aeroport at 17" length....all external. You would end up with 1.43 net cubes tuned to 35hz. The port would be closer to the side wall. It will give you the output you're looking for.

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[CSCStang]

Btw, the 1.42 you have is gross volume not net...you have to account for displacements.

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[inteva6184]

15X15X15 was already stretching it so adding a half inch isnt really possible. To get the extra room I can bump the bottom of the box out. I am trying to learn sketchup but I have a long way to go but I would do something like this. That is not even close to scale btw.

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[Jeffdachef 5,000+ posts]

How about top port mostly external but the roof is close to the roof to load off the roof

 

[inteva6184]

How about top port mostly external but the roof is close to the roof to load off the roof

I am sure you are leading me in the best direction possible to get the most out of my stereo but I really need a compromise between bumping and having a family and "normal" truck. I am trying to keep it as low profile as possible.