ATTN: 80inches and other 4th order experts

[iamamp3pimp 5,000+ posts]

its not a 4th order though

not anymore anyway, just a regular clamshell now...

 

[SHiZNiLTi 10+ year member]

4th order for (2) 10" Mach 5 IXL IXL-10.2.2's...

http://www.mach5audio.com/zen/index.php?main_page=product_info&cPath=65&products_id=187

T/S Parameters

Fs = 27.8 Hz

Re = 3.7 Ohms

Qes = 0.46

Qms = 6.44

Qts = 0.43

Mms = 234.1 g

Rms = 6.34 kg/s

Cms = 0.14 mm/N

VAS = 13.9 litres

Sd = 265.9 cm2

Xmax = 20 mm

For the VAS I converted from Litres to ft3 because the "Fourth-Order Bandpass Subwoofer Enclosure Design Calculator" on carstereo.com uses ft3, not litres, is this correct?

Here is the program I'm using...

http://www.carstereo.com/help/Articles.cfm?id=27

1 liter = 0.0353 ft3

VAS is 13 liters x .0353 = .49ft3

I entered in all the T/S Parameters and set the F3L to 31hz so my range would be 31hz-77hz +2.41db.

It's saying the Vf(front ported section) of the box should be .35cuft tuned to Fb 49hz and the Vr (rear sealed section) of the box should be .46cuft. And this is for (2) subs, doesn't this seem way too small?

The F3 was at 47hz, but it gave the setup too much gain @ +14db so I brought it down to 31hz and that gave the setup +2.41db and also gave me a better Passband at 31hz-77hz.

Please help and check these numbers. This 4th order just seems way too small @ .81 cuft total for (2) 10's

 

[jdawg 5,000+ posts]

I didnt save the design i came up with but thats about what i got and i thought it was too small too, i just went off of the 'optimum' setting not adding any gain or anything

 

[80INCHES 5,000+ posts]

Im Just Now C-ing This Thread

Dont Do The Sup Facing Each Other

Get Either 2 Niteshade 12's Or Ia Flatlyine Or Mach 5 Spl 12's Or Fi Q12's Or Ss Rlp-12's

They All Will Work Well With The Dimensin U Have..if U Can Get 14 High Ur Golden

Hit Me Up And I Will Give U Details

And The Round 10'' Sonotue Is Perfect

80

 

[jdawg 5,000+ posts]

i want to see the design //content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gif 80, what prog you use?

 

[SHiZNiLTi 10+ year member]

80INCHES due to my height limitations which is caused by the hole opening of my trunk I'm gonna have to do (2) 10" subs to keep the height down. Probably will go with (2) 10" Mach 5 IXL's. This system isn't going to be anywhere close to my BTL setup, but thats ok, I just want a clean soundin setup with decent output with no trunk rattle. I might be able to fit (4) 10's though, we will have to see what the actual box size would be for the (2) 10's.

Ya the 10" sono tube is what I was planning on using if I was to use a 10" tube...

I might be able to get away with using just a single 6" flared precision port for the 10's though...

30x12x24 are the new max dimensions I want to use...

 

[80INCHES 5,000+ posts]

i want to see the design //content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gif 80, what prog you use?

i dont use any programs...i only use my head and a calculator

to shiz... use 2 tens....u would shit urself if u use the design im thinking...

80

 

[iamamp3pimp 5,000+ posts]

80 inches for the win.

 

[momuzykent 10+ year member]

80 is the 4th order guru!

 

[galacticmonkey 5,000+ posts]

For the 2 10s go with 1.4 sealed and 2 ported. Use a single flared 6" aero tuned to 45hz.

 

[soundsolutions Pro Seller]

12" SSA XCON Specs

Re 3.7 Ohms (1.85 per coil wired in series)

Fs 32.4 Hz

Qms 5.24

Qes .39

Qts .37

Mms 222

Vas 35 l

Sd 480 cm^2

BL 20.65

SPL 86.7 1 W/1m

Hope this helps.

 

[SHiZNiLTi 10+ year member]

Well after thinking it over, it's just gonna be too hard fit a 12" due to height limitations.

I've decided to get the following, I will be ordering it 03/16/09.

Let me know if you think I'm making the right decision, all products are BNIB and the prices seem decent, no shipping cost and no tax...

* Hifonics BXi1608D

* (2) 10" RE SE D4's

* Kicker 1/0 gauge dual amp kit

 

[jdawg 5,000+ posts]

spring about $40 more and get a bxi2008d