help me design a box for 2 ssa xcon 10 inches for daily

[Abo raya]

Hello guys

Can you help to design a box for my subs, here is the info about what I want

Subs : 2 (ssa xcon dual 2) 10 inches( 2017 model). Here is the ts parameters

· FS: 37.9

· QES: .38

· QMS: 5.3

· QTS: .35

· SD: 310

· VAS: 8.4L

· SPL: 82.7

· BL: 15.74/22.25

· RE: .7 ohm / 1.4 ohm

· MMS: 279

· Xmax: 29mm

· RMS: 2000W

Sub amp : 2 zapco st-2000xmii strapped at 2 ohm

Car : yaris 2010 sedan

Box location : in the trunk with sub and port pointed toward the cabin because I wanna sealed the box off

Space available : I will have a weird shaped box because I have to have access to batteries the net available space inside the box is 5.8 cube.

Rear seat: I have 3 rear seats. I can fold one seat behind the driver seat or I can fold the middle and the one behind the passenger together because they are attached and of course I can fold them all

Electrical : 1 singer alt 320 amp with 3 acid batt of 250 amp combined

Bandwidth needed : from 25hz to 50 Hz minimum. The wider the better especially on the lower side but if it will comes at the cost of achieving the goals over the needed bandwidth then I don’t want it

Goal : daily system with clear clean accurate sounding bass, extremely loud across the bandwidth while murdering the hell out of the lows especially 32 hz and below

Type of music : I listen to every type of music. Rock, jazz, pop you name it and I listen to a lot of slowed music . decaf djsnt and such

Proposed box : based on ssa recommendation and my little knowledge and the space available I thought 3.5 cube tuned to 31 with 60 inch squared of port area or 3.5 cube tuned to 28 with 52 inch squared.

I have graphed the tow boxes in Bassbox6 pro. The yellow graph is 32hz box, the orange is 28hz. here is the result

https://imgur.com/a/qMMou

This is the typical response and as you can see the 28hz box have an advantage over the other box from 30hz and below which is really what I want.

But

Here is the response when I apply the port resonance

https://imgur.com/CETIEWv

As you can see the 31hzbox is louder from around 27hz and up over the other box . which if it was true I will do it

My questions : is my tow proposed designs are going to help me achieve my goals and if so which one of them

Is the port resonance predicted by the program true

Where should I place the port ( behind driver seat or passenger seat or in the middle ) the port is slot

If my proposed designs are wrong what is your recommendation based on everything I mentioned

Any help is appreciated and if there is anything you want me to add please tell me

I hope I covered everything needed and thanks in advance

Click to read more...

 

[Abo raya]

@Jeffdachef i would like to know your input

 

[Abo raya]

@Buck

 

[Abo raya]

Any help guys

 

[kr15 5,000+ posts]

I like the 3.5 at 28

I had an xcon 15 at 29hz. Sounded great

 

[Abo raya]

Thanks @kr15. Do you think the (30hz with 60 port area) will be better given that it has more port area

 

[kr15 5,000+ posts]

60 is like 17^2, which in my experience is a pretty sweet spot for daily builds with drivers that have good excursion.

 

[Abo raya]

Thanks for your help man

After i did some calculations i came up with 3 options

3.5 cube tuned to 28hz with 52 port area

3.5 cube tuned to 30hz with 60 port area

3.5 cube tuned to 32 hz with 70 port area

So what do you think will help me achieve my goals better

Thanks in advance

Really appreciate your time and help

 

[BOOMINGRANDPA 5,000+ posts]

i like higher tune for volume and cause i like rock music but tuning up to u.. but i wouldn't do 70 sq in port unless u modeled rear port air velocity at your clamped power and it showed u need that much port..

 

[Abo raya]

Thanks for the input man

 

[kr15 5,000+ posts]

Of the 3 you listed, i like the 30hz box

 

[Abo raya]

Thanks guys for the input i really appreciate it

 

[Abo raya]

@Jeffdachef i would like to hear your opinion on this very much

 

[Abo raya]

@Hertz Mafia @Boomin_tahoe
I would like to know your input too

 

[Abo raya]

@keep_hope_alive any help is appreciated