Design help for 15" HDS3.1 Soundqubed, in 4 cu feet @ 34hz

[jwjordan322]

Vehicle : 2014 Dodge Avenger

Location in the vehicle: Backseat

Space available (Length x Width x Height): Shouldn't be an issue being in backseat. But can get exact measurements if needed.

Subwoofer make and model: Soundqubed HDS3.1

Subwoofer Size:15"

Number of Subwoofers: 1

Type of Port (Kerfed, Slot, Aero, etc.): Slot

What type of music do you like?: Rap/ Hip Hop

Is your goal SPL or Everyday Music?: Everyday daily system

Tuning Freq (Hz): 34hz

Volume :

Questions:I have tried numerous calc to try this myself. what throws me off the most is the fact ill need a L port.

Displacement is .16^ft

Any help would be greatly appreciated

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[nismotwin 10+ year member]

What program are you using? What about the L-port is throwing you off? Also i believe Soundqubed has some plansboxs already on there site but, we can help you.

 

[Jeffdachef 5,000+ posts]

Vehicle : 2014 Dodge AvengerLocation in the vehicle: Backseat

Space available (Length x Width x Height): Shouldn't be an issue being in backseat. But can get exact measurements if needed.

Subwoofer make and model: Soundqubed HDS3.1

Subwoofer Size:15"

Number of Subwoofers: 1

Type of Port (Kerfed, Slot, Aero, etc.): Slot

What type of music do you like?: Rap/ Hip Hop

Is your goal SPL or Everyday Music?: Everyday daily system

Tuning Freq (Hz): 34hz

Volume :

Questions:I have tried numerous calc to try this myself. what throws me off the most is the fact ill need a L port.

Displacement is .16^ft

Any help would be greatly appreciated

any reasons why you putting it in the back seat? thats a horrible place for you to try and get loud with. Keep it in the trunk.

 

[jwjordan322]

With the L port. Say I need 28 inches in length and can only go back 20 for example, I know id need an additional 8 inches along the back. But would I measure the inside of port or very outside edge?

And why would the backseat be horrible? I don't think I'll have trunk room for 4cubic feet. Kinda figured sub and port forward like right behind the seat would be pretty darn loud?

 

[Papermaker85 5,000+ posts]

Port length is the actual length of the port. The entire port. All the walls should be the same. Of course you can use the box walls to act like part of the port but it still needs to be 28 inches..

 

[jwjordan322]

I get that it needs to be 28. But the wall side of the port is gonna measure longer then the inside if it's an L port. using my above example I need 28 inches can only go back 20. So my outside wall I'd have 20" but inside of port would be 16" would I measure my additional 8" from the outside wall or from the inside 16" to go along the back wall. If that makes sense

 

[Papermaker85 5,000+ posts]

Ok. First off.. Rule 1 you must maintain the same amout of port are throughout the port.

So lets say your slot port is 15hx3w.

So if your box is 23 deep internal. You can have the port wall 20" to maintain the 3" width.

Now that you have that cleared up. If you use a 20" peace and screw it behind the panel the opening is the port is actually 20.75 if you use 3/4 ply..

That being said you need to screw the 2nd piece into the first piece to make the "L" port. That also adds .75" of length to the port. So techinally you would need a piece 6.5" long to get 28" of port length.

If you make the port 20.75 inches long and screw it flush with the port opening panel then you make the 2nd peace 6.5"

 

[Papermaker85 5,000+ posts]

To answer your question. No. Its not an "average" its the actual length of the wood..

 

[Boomin_tahoe 5,000+ posts]

The port length would wrap around inside the enclosure. Or if possible, do a labyrinth enclosure.

Example... https://www.bing.com/images/search?q=labyrinth+sub+enclosure&view=detailv2&&id=32D9E8953279644C142162B0F38F832597BC8300&selectedIndex=135&ccid=S9SOtrz%2f&simid=608032693076427054&thid=OIP.M4bd48eb6bcff19032c2738373e35476fo0&ajaxhist=0

 

[Papermaker85 5,000+ posts]

you want someone to design you a box?

 

[CSCStang]

I can put a design together for ya

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[Papermaker85 5,000+ posts]

I can put a design together for ya
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i think that's what he is getting at.. i say sell that POS and get a better woofer.. lol LE is 8.8mH my god. if i had a suggestion id do 5 tuned to 36

 

[jwjordan322]

I can put a design together for ya
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That would be great.

 

[CSCStang]

That would be great.

Pm me your max dimensions, power used and music preferences. If you're putting it in the back seat then let's do sub up imo.

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