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tuning a sealed box?


Aj11

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i just sold my vented box and got a sealed for free. i was surprised how good it sounds. so now when i build my box for all 3 of my 12s I'm gonna go sealed.(third amp should be in a week) my only problem is the sealed i have now doesn't play low hz(duh) so when i build the box i want it to play down to 30hz. so there's my question how big does a sealed box for a single 12(alpine type r 4th gen) have to be to get that low? i was thinking 3cubic feet? please help!

each sub will have its own air space with its own jl 500/1 v2

3 alpine type r 12swd4

3 jl 500/1 v2

00g wire distribution Block 4g out to each amp

second battery coming right After Christmas

thanks in advance

jvc deck

stinger 1800 front

hc 2000 kinetic rear

2 runs of 1/0g

big 3/4

ct 60.4

2 ct 1400.1

ct EXO 15 d1

lots of deadner

type r comps front stage

6 kicker tweets rear stage

lots of great stuff

coming soon

ho alt

more bats

ct comps for front stage

more deadner

sweet amp rack

lots of L.E.D lights

new deck (thinking 80 prs, or flip out)

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i would do 4.5-6 cubes sealed for 3.

to get a proper sealed box tuning, you need to plug some info into tuning program that will spit out a response curve for the given size with the given subs T/S parameters.

29408240963_9908a51930_o.png
Best Score to Date : 160.5 dB Outlaw (47Hz)[4 XM 15's & 2 Taramps Bass 12k's]

BL :  http://www.stevemeadedesigns.com/board/topic/147800-chevyboy95s-4-15s-7krms-wall-1533-db-on-half-power/
YouTube: http://www.youtube.com/hitemwiththeflex/

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you would do 6cubic feet in ttotal for all 3 subs? or 4 cubic feet each? i have the room for almost anything. there in a 1.2 sealed box right now and its way to small!(for what I'm looking for)

jvc deck

stinger 1800 front

hc 2000 kinetic rear

2 runs of 1/0g

big 3/4

ct 60.4

2 ct 1400.1

ct EXO 15 d1

lots of deadner

type r comps front stage

6 kicker tweets rear stage

lots of great stuff

coming soon

ho alt

more bats

ct comps for front stage

more deadner

sweet amp rack

lots of L.E.D lights

new deck (thinking 80 prs, or flip out)

Link to comment
Share on other sites

4.5-6 cubes for all 3, like i said. which is 1.5-2 per sub.

29408240963_9908a51930_o.png
Best Score to Date : 160.5 dB Outlaw (47Hz)[4 XM 15's & 2 Taramps Bass 12k's]

BL :  http://www.stevemeadedesigns.com/board/topic/147800-chevyboy95s-4-15s-7krms-wall-1533-db-on-half-power/
YouTube: http://www.youtube.com/hitemwiththeflex/

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i was just double checking. And thank you! I'll do 2cf

jvc deck

stinger 1800 front

hc 2000 kinetic rear

2 runs of 1/0g

big 3/4

ct 60.4

2 ct 1400.1

ct EXO 15 d1

lots of deadner

type r comps front stage

6 kicker tweets rear stage

lots of great stuff

coming soon

ho alt

more bats

ct comps for front stage

more deadner

sweet amp rack

lots of L.E.D lights

new deck (thinking 80 prs, or flip out)

Link to comment
Share on other sites

The difference at 30Hz between 1 cube and 3 cubes sealed is the difference between 99 & 100 MPH. If you want good response at 30Hz, build a ported enclosure tuned to 33.

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Instagram: audioanarchyllc

Youtube: youtube.com/bbeljefe

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Im sorry for your loss....... of output

THERE IS NO BUILD LOG!

1998 Chevy Silverado ext cab

Alpine CDA-9887

4 Team Fi 15s

2 Ampere Audio TFE 8.0

2 Ampere Audio 150.4

3 Digital Designs CS6.5 component sets

Dual Mechman 370XP Elite alternators inbound!

8 XS Power d3400

6 XS power d680

Second Skin

Stinger

Tsunami Wiring

Sky High

A Real Voltmeter not a piece of shit stinger.

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no my box was decent for a prefab. atrend kandy kolor b box 2.25 gross per sub @ 38hz it was Just time to go because of the third sub. got a deal on the atrend for $160 had for ten.months sold for $100I'm Happy with that.

i was reading that for a 12inch sub to have a flat response at 20hz the box had to be 5cubic feet(i do have the room for that but jeeze!) so i was thinking around 3 would give Me low/mid 30hz area. but if you guys really dont think its possible sealed I'll go vented. i was also thinking about Just going at 3cubic feet each sub see how it sounds if i dont like it port it to the hz i want. does that sound like a good idea or Just build a nice slot vent? fist box build so nothing to crazy! even tho i want a 4th order but have no idea where to begin

jvc deck

stinger 1800 front

hc 2000 kinetic rear

2 runs of 1/0g

big 3/4

ct 60.4

2 ct 1400.1

ct EXO 15 d1

lots of deadner

type r comps front stage

6 kicker tweets rear stage

lots of great stuff

coming soon

ho alt

more bats

ct comps for front stage

more deadner

sweet amp rack

lots of L.E.D lights

new deck (thinking 80 prs, or flip out)

Link to comment
Share on other sites

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