Ported Box NOOOOB! - Realm of Excursion



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Old 04-24-2006   #1 (permalink)
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Default Ported Box NOOOOB!

Alright I'm upgrading my subs from the CompC12s and I plan to Build another box for the Comp VR's. I've NEVER done any ported boxes in my life only sealed. Can I get the basic pointers on how it should be done. I Mean I need a CRASH COURSE! Also what are some good ways to reduce port noise? (I cant stand it) Any and ALL information would be greatly appreciated!
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Vehicle: 2001 Chevrolet Xtreme Blazer
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3/8" Valves with 1/2" Line
2 Viair Chrome 480 Compressors


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Old 04-24-2006   #2 (permalink)
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Default Ported Box NOOOOB!

Alright I'm upgrading my subs from the CompC12s and I plan to Build another box for the Comp VR's. I've NEVER done any ported boxes in my life only sealed. Can I get the basic pointers on how it should be done. I Mean I need a CRASH COURSE! Also what are some good ways to reduce port noise? (I cant stand it) Any and ALL information would be greatly appreciated!
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Vehicle: 2001 Chevrolet Xtreme Blazer
Air Ride:
Front Bagged on Slam RE7 bags
5 Gallon Tank
3/8" Valves with 1/2" Line
2 Viair Chrome 480 Compressors


Stereo:
4 15" Memphis M3
Flat Wall tuned at 40hz
6000 Watts,200 Amp Alternator, SVR Batteries
150dB Daily Driver




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Old 04-24-2006   #3 (permalink)
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Bigger ports with rounded edges usually help eliminate port noise. This program might help you out with your box, might make it more complicated either way its a good starting point. http://accelerator-pedal.com/ported-box.asp
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Old 04-24-2006   #4 (permalink)
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Round all edges, make sure to make a 90 degree angle if using slot ports, measure the port width many many times to insure a correct tuning.
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Old 04-24-2006   #5 (permalink)
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Quote:
Originally Posted by Erthshker
Round all edges, make sure to make a 90 degree angle if using slot ports, measure the port width many many times to insure a correct tuning.
actually you wanna use 45 degree im sure it was a typo tho..
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Old 04-24-2006   #6 (permalink)
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Yep it was my bad kinda hard thinkin when i jus took sum vikanin however you spell it for my back......im a lil relaxed to say the least.
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(4) 12" Kicker 07 Solo-X.... (2) Hifonics XXV-Goliath, RF T600-4
Focal 165KF Components
300amp Amperage Technologies alt...(4) Kinetik 2400/ (1) 1800
154.1 @41hz @ Dash, 150.6 Bassrace - TL Scores
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Old 04-24-2006   #7 (permalink)
 
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Old 04-24-2006   #8 (permalink)
 
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lol.......vicodin........my sister used to be a nurse and she used to get vicodin pills for free.....lol.......

back on topic.......what i have learned here is:
1. keep the ports as far away from the subs as possible
2. more surface area is better
3. don't put the ports on the opposite wall from the subs
4. if you want SPL and SQL.....go with square ports.....that way you can make two (one for SPL & one for SQ) and switch them around
5. round both ends of the ports (entrance & exit)
6. silicone all cracks/joints.....(i do inside the box and outside too)
7. add braces
8. let silicone and glue dry for at least 24hrs before putting in subs
9. so wood wont crack when drilling screws.......first drill a whole smaller than the thickness of the screw
10. wood screws work well (1 1/4 long)
11. bigger isn't always better but it usually is......lol

use this for your calculations:
http://www.carstereo.com/help/Articles.cfm

here are some boxes i have made (pics to help you visualize....lol)
https://realmofexcursion.com/phpBB2/viewtopic.php?t=5385
https://realmofexcursion.com/phpBB2/viewtopic.php?t=5097
https://realmofexcursion.com/phpBB2/v...r=asc&start=15
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Old 04-24-2006   #9 (permalink)
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Alright im checking out these calculation sites and what would be the right tuning frequency to be at?
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Vehicle: 2001 Chevrolet Xtreme Blazer
Air Ride:
Front Bagged on Slam RE7 bags
5 Gallon Tank
3/8" Valves with 1/2" Line
2 Viair Chrome 480 Compressors


Stereo:
4 15" Memphis M3
Flat Wall tuned at 40hz
6000 Watts,200 Amp Alternator, SVR Batteries
150dB Daily Driver




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Old 04-24-2006   #10 (permalink)
 
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are you looking for deep ass low bass?? lol

if you are then tune around 29-31hz
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Old 04-25-2006   #11 (permalink)
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I would tune around 32-34hz myself, Most notes below these arent really heard anyhow and just cause the amp/amps to get hot trying to reproduce them. Also if you have a subsonic filter set it a couple hz below your tuning frequency.
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Car - 99 Neon Sport
Batt - 1 Redtop up front 200amp EA Alt
Sub - 2 10" Kicker L7's in ~4.5 cuft @ 38hz each on a Xtant X1001
Front Highs/Mids - JVC CS-FS6 on Xtant A2002
Rear Highs/Mids - Not hooked up
HU - Pioneer DEH-P8600MP
1/0 wire ran thru entire car aswell as big3
DB - 139.2 @ Headrest 143.3 @ Dash
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Old 04-25-2006   #12 (permalink)
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Alright Im prolly gonna do 31hert But now when im building this. I'm prolly gonna do the L shaped design port on the inside to a slot. Now is it basically all holow inside the box except for the interior parts of the port? Or do i like chamber the subs off and give the chambers there own little ports to the bigger ones or wut?
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Vehicle: 2001 Chevrolet Xtreme Blazer
Air Ride:
Front Bagged on Slam RE7 bags
5 Gallon Tank
3/8" Valves with 1/2" Line
2 Viair Chrome 480 Compressors


Stereo:
4 15" Memphis M3
Flat Wall tuned at 40hz
6000 Watts,200 Amp Alternator, SVR Batteries
150dB Daily Driver




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Old 04-25-2006   #13 (permalink)
 
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i would do separate chambers......something like this

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Old 04-26-2006   #14 (permalink)
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Quote:
Originally Posted by BIG MIKE
i would do separate chambers......something like this



what would happen if a box was built without a wall in teh middle to make seperate chambers? would it sound worse?

nice box btw
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Old 04-26-2006   #15 (permalink)
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Yea im with butters on that question cause the next box im doing is gonna be a replica of the one i have in now (u can see in my signature picture) but with ports........how could i do that?
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Vehicle: 2001 Chevrolet Xtreme Blazer
Air Ride:
Front Bagged on Slam RE7 bags
5 Gallon Tank
3/8" Valves with 1/2" Line
2 Viair Chrome 480 Compressors


Stereo:
4 15" Memphis M3
Flat Wall tuned at 40hz
6000 Watts,200 Amp Alternator, SVR Batteries
150dB Daily Driver




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Old 04-27-2006   #16 (permalink)
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Quote:
Originally Posted by XBlazer01
Yea im with butters on that question cause the next box im doing is gonna be a replica of the one i have in now (u can see in my signature picture) but with ports........how could i do that?


lol, that could get a bit complicated
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Old 04-27-2006   #17 (permalink)
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def. lol.


PLEASE SOMEONE HELP ME WITH A DIAGRAM!
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Vehicle: 2001 Chevrolet Xtreme Blazer
Air Ride:
Front Bagged on Slam RE7 bags
5 Gallon Tank
3/8" Valves with 1/2" Line
2 Viair Chrome 480 Compressors


Stereo:
4 15" Memphis M3
Flat Wall tuned at 40hz
6000 Watts,200 Amp Alternator, SVR Batteries
150dB Daily Driver




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