fourth order for apxx18?

[RangerDangerV2 5,000+ posts]

so I will def be doing a new enclosure for my 18... and a fourth order came to mind..

heres what I was thinking.

3 cubes sealed ( sub inverted)

7 cubes ported

tuned to 45

Idk much about these so any help is appreciated... and what should I go with for port area??

Click to read more...

 

[Falcons 5,000+ posts]

make up your mind jakeapotamus

 

[RangerDangerV2 5,000+ posts]

[quote name='falcons03079313']make up your mind jakeapotamus[/QUOTE]

im very indescisive but Im going with a fourth order for sure this time.

---------- Post added at 10:25 PM ---------- Previous post was at 10:25 PM ----------

and does 6 cu ft ported sound good instead of 7?? @Moble Enclosurs @Buck @pro rabbitt

 

[Buck 5,000+ posts]

Post up t/s of said woofer.

 

[RangerDangerV2 5,000+ posts]

UNITS APXX10D2 APXX12D2 APXX15D1 APXX18D1

Revc (ohms ) 1.00 3.60 1.80 2.00

Fo (Hz) 45.06 42.20 39.80 38.34

Sd (sqM) .0330 .0550 0.089 .1195

Bl ™ 17.94 37.66 27.11 26.88

SPLo (dB) 91.92 94.34 95.46 97.10

Xmax (mm) 10 10 10 10

Dvc (mm) 75.00 75.00 75.00 75.00

Qms (m.q.) 6.31 2.83 3.12 5.81

Qes (e.q.) 0.106 .133 .175 .187

Qts (totQ) 0.105 .127 .165 .181

Vas (liter) 18.57 31 63 112

Cms (uM-N) 120 72. 56 55.2

Mms (gram) 141 197 285 312

 

[Buck 5,000+ posts]

Um, I would strongly recommend against a 4th.

 

[RangerDangerV2 5,000+ posts]

Um, I would strongly recommend against a 4th.

why?? my teamate has the same sub and he put his in a fourth order... he does 148 out of his trunk on music...

 

[CAT MAN 5,000+ posts]

Um, I would strongly recommend against a 4th.

not completely.i would reccomend a 4:1. but like jake said earlier....

 

[Buck 5,000+ posts]

Low xmax, really high EBP (depending on accuracy of t/s parameters), I still think a different enclosure would work better.

Doing a 148 out of a trunk is just that, we don't know what your goals are.

 

[CAT MAN 5,000+ posts]

Low xmax, really high EBP (depending on accuracy of t/s parameters), I still think a different enclosure would work better.
Doing a 148 out of a trunk is just that, we don't know what your goals are.

he knows im a meter chaser sooo.... lol

 

[RangerDangerV2 5,000+ posts]

xmax is actually 20 peak to peak sooooo....

 

---------- Post added at 11:28 PM ---------- Previous post was at 11:27 PM ----------

 

and I would like to meter high but I am leaning more towards groundpounding...

 

[splwj47 10+ year member]

whats with the low xmax?

 

[Buck 5,000+ posts]

Yes, it still doesn't change that the xmax is relatively low.

I feel like doing a 4th is just like trying to take a prius off road, you can do it but it'll be difficult.

 

[RangerDangerV2 5,000+ posts]

whats with the low xmax?

20ml is low?? seems avg to me... atomic doesnt rate peak to peak boyz they rate it one way...

 

[splwj47 10+ year member]

20ml is low?? seems avg to me... atomic doesnt rate peak to peak boyz they rate it one way...

im looking at the specs on the site i thought the apxx had a 4 inch coil? the site says 3.