420 sq in of port good for 1 hdc3 10 tuned to 39.5 hz in 1.5 cubic ft?

just want to know if i did my math right and this all makes sense lol

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- 12-02-2009 #1
## 420 SQ inches

420 sq in of port good for 1 hdc3 10 tuned to 39.5 hz in 1.5 cubic ft?

just want to know if i did my math right and this all makes sense lol

TL SCORE-142.0 sealed box 2 15, AA chaos,saz1500d on music legal

-Current set up----------------Digital Designs 9515g ///

-----------------------------------saz1500dx2 soon to be strapped at 1 ohm

-----------------------------------crunch1000.2 on AB SQ6Bs

------------------------------------DC POWER 270xp for the "rolla" waiting one one tiny bracket

---------MAXXSONICS_FTMFW------------

Sold too=kickerman09x2 Bought from=Galacticmonkeyx2, sundownz, 350zpsl, retroaudioinc, zade08, SWFL, amartin_72, kickerman09,waggsmcgee,jpd2621

- 12-02-2009 #2
## Re: 420 SQ inches

~~~~~~~~~~~~

Equipment for sale-220A alt, Eminence Delta 10" speakers, BNIB MB Quart Q4.80, (2) IA 20.1's (Newest Version), SI BM Motor w/ Basket, (2) Deka Intimidator G31 Batts, 2 RD Sonance 15's with baskets (need recone).

~~~~~~~~~~~~

Refs: Scott S, hornedfrog1985, dsmdan, Newageking, DBboom, R/T Pimp, SQcrewcab, Bumpin Buick, tangelo95, fearof85,

coma_toast, Blackga, spy, LouisianaCRX, Oxsign, etc...

- 12-02-2009 #3
## Re: 420 SQ inches

Umm...do you mean 024 instead of 420? Do you realize how much port area 420 square inches is.

- 12-02-2009 #4
## Re: 420 SQ inches

well yea i guess i ****ed up some how here are the dimensions of the port

2 wide

10.5 height

20 length

sound about right for 1.5 cubic feet?

TL SCORE-142.0 sealed box 2 15, AA chaos,saz1500d on music legal

-Current set up----------------Digital Designs 9515g ///

-----------------------------------saz1500dx2 soon to be strapped at 1 ohm

-----------------------------------crunch1000.2 on AB SQ6Bs

------------------------------------DC POWER 270xp for the "rolla" waiting one one tiny bracket

---------MAXXSONICS_FTMFW------------

Sold too=kickerman09x2 Bought from=Galacticmonkeyx2, sundownz, 350zpsl, retroaudioinc, zade08, SWFL, amartin_72, kickerman09,waggsmcgee,jpd2621

- 12-02-2009 #5
## Re: 420 SQ inches

how the hell did you get that?

Synyster97XLT

Science can fly planes across oceans. Religion sends them straight into buildings.

2 18" btl's

10^3 35 hz

2 GP3000d pro's.

250 amp alt

3 extra batts

8 5" dayton mids

Rockford p300.2

All knu fleks 1/0

CD-IB100II

Refs and feedback \/

http://www.caraudio.com/forum/showthread.php?t=431785

- 12-02-2009 #6
## Re: 420 SQ inches

very poor math skills and probably smoking way too much

TL SCORE-142.0 sealed box 2 15, AA chaos,saz1500d on music legal

-Current set up----------------Digital Designs 9515g ///

-----------------------------------saz1500dx2 soon to be strapped at 1 ohm

-----------------------------------crunch1000.2 on AB SQ6Bs

------------------------------------DC POWER 270xp for the "rolla" waiting one one tiny bracket

---------MAXXSONICS_FTMFW------------

Sold too=kickerman09x2 Bought from=Galacticmonkeyx2, sundownz, 350zpsl, retroaudioinc, zade08, SWFL, amartin_72, kickerman09,waggsmcgee,jpd2621

- 12-02-2009 #7
## Re: 420 SQ inches

~~~~~~~~~~~~

Equipment for sale-220A alt, Eminence Delta 10" speakers, BNIB MB Quart Q4.80, (2) IA 20.1's (Newest Version), SI BM Motor w/ Basket, (2) Deka Intimidator G31 Batts, 2 RD Sonance 15's with baskets (need recone).

~~~~~~~~~~~~

Refs: Scott S, hornedfrog1985, dsmdan, Newageking, DBboom, R/T Pimp, SQcrewcab, Bumpin Buick, tangelo95, fearof85,

coma_toast, Blackga, spy, LouisianaCRX, Oxsign, etc...

- 12-02-2009 #8
## Re: 420 SQ inches

cool cool thanks man i rally wanted to use a 8 inch flared aero but it says id need 50+ inches length of port to achieve a 40 hz tuning lol

-Current set up----------------Digital Designs 9515g ///

-----------------------------------saz1500dx2 soon to be strapped at 1 ohm

-----------------------------------crunch1000.2 on AB SQ6Bs

------------------------------------DC POWER 270xp for the "rolla" waiting one one tiny bracket

---------MAXXSONICS_FTMFW------------

Sold too=kickerman09x2 Bought from=Galacticmonkeyx2, sundownz, 350zpsl, retroaudioinc, zade08, SWFL, amartin_72, kickerman09,waggsmcgee,jpd2621

- 12-02-2009 #9
## Re: 420 SQ inches

Why the hell do you need an 8" aero for a 10" speaker?

- 12-02-2009 #10
## Re: 420 SQ inches

Yea you would only need a 4" at most

~~~~~~~~~~~~

Equipment for sale-220A alt, Eminence Delta 10" speakers, BNIB MB Quart Q4.80, (2) IA 20.1's (Newest Version), SI BM Motor w/ Basket, (2) Deka Intimidator G31 Batts, 2 RD Sonance 15's with baskets (need recone).

~~~~~~~~~~~~

Refs: Scott S, hornedfrog1985, dsmdan, Newageking, DBboom, R/T Pimp, SQcrewcab, Bumpin Buick, tangelo95, fearof85,

coma_toast, Blackga, spy, LouisianaCRX, Oxsign, etc...

- 12-02-2009 #11
## Re: 420 SQ inches

-Current set up----------------Digital Designs 9515g ///

-----------------------------------saz1500dx2 soon to be strapped at 1 ohm

-----------------------------------crunch1000.2 on AB SQ6Bs

------------------------------------DC POWER 270xp for the "rolla" waiting one one tiny bracket

---------MAXXSONICS_FTMFW------------

Sold too=kickerman09x2 Bought from=Galacticmonkeyx2, sundownz, 350zpsl, retroaudioinc, zade08, SWFL, amartin_72, kickerman09,waggsmcgee,jpd2621

- 12-02-2009 #12
## Re: 420 SQ inches

So you want them to say "wow your retarded for using that big of a port" lol.

Equipment for sale-220A alt, Eminence Delta 10" speakers, BNIB MB Quart Q4.80, (2) IA 20.1's (Newest Version), SI BM Motor w/ Basket, (2) Deka Intimidator G31 Batts, 2 RD Sonance 15's with baskets (need recone).

~~~~~~~~~~~~

Refs: Scott S, hornedfrog1985, dsmdan, Newageking, DBboom, R/T Pimp, SQcrewcab, Bumpin Buick, tangelo95, fearof85,

coma_toast, Blackga, spy, LouisianaCRX, Oxsign, etc...

- 12-02-2009 #13
## Re: 420 SQ inches

wow. Yeah square as in square inches means multiplying two sides of something, not three- thats cubes. 2 by 10.5 would be 21 square inches and 420 cubic inches for a 20" long port. To use the 8" aero you would need two big tens, but this type of box makes them LOUD. One 6" works good for a big 10, usually sacrificing some SQ- big ports on small boxes usually dont sound the best.

- 12-02-2009 #14
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## Re: 420 SQ inches

I didn't know you could measure SQ by inches.

- 12-02-2009 #15
## Re: 420 SQ inches

This box was built for two HDC3 10's getting 1500RMS each. 2.9 cubes. Its hard to get down in the 38hz range with a huge port and still fit two big subs in there. It helps large sub boxes get loud when they don't need 20" long ports for 38hz tuning, even given the same square inches of port per cube.

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