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box direction, spl?


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will_22_82 
Copper - Posts: 89
Copper spacespace
Joined: October 07, 2006
Location: United States
Posted: October 15, 2006 at 7:52 PM / IP Logged  
will reversing the box, pointed toward the back in the trunk, with a ported box gain db?? or should i point the box toward the roof in the back seat? which would work better? i want to do this to enter a few more contests and hit higher. Right now its only 143.4, it would hit harder in a different car and bigger box, but i am limited right now. anyone know?
jonathancullen 
Silver - Posts: 282
Silver spacespace
Joined: September 22, 2006
Location: United States
Posted: October 15, 2006 at 8:26 PM / IP Logged  
im not exaclty sure with ported but yes sealed boxes hit louder when reversed. your best bet would be to just try it and see what you like, since its totally up to you.
arrow12 
Silver - Posts: 527
Silver spacespace
Joined: October 06, 2005
Location: United States
Posted: October 15, 2006 at 9:02 PM / IP Logged  

The effect you want takes a lot of things into mind.  What kind of car?  What subs?  All cars react differently to sound.  Some are better with the boxes facing different ways.  There are so many things that can come into play.  I suggest trying the box in different directions.  I'm assuming that the car is sound deadend and the box is securely mounted right?  There are so many things that you can to do get a little more out of your system.  The most important question is,  what are the subs and the box?  The car would be helpful to know too.

That's my opinion. Take it, leave it, or correct me.
will_22_82 
Copper - Posts: 89
Copper spacespace
Joined: October 07, 2006
Location: United States
Posted: October 15, 2006 at 10:33 PM / IP Logged  
four JBL Power Series P1224 12 "
wvsquirrel 
Gold - Posts: 1,237
Gold spaceThis member has made a donation to the12volt.com. Click here for more info.spacespace
Joined: July 27, 2002
Location: Florida, United States
Posted: October 15, 2006 at 10:51 PM / IP Logged  
Agreed. I always found that my sealed enclosures hit harder and sounded better when reversed. I've run them in hatchbacks, coupes and SUV's.
Along with directional position also expirement with locational position (move the box farther or closer to the back of the trunk.)
4ohm DVC's rated at 400RMS 1200Peak
What amp are you running?
How do you have the subs wired? (ohm level at the amp)
What AWG cable are you using?
Have you upgraded your alternator?
Have you upgraded the wiring from your alternator to the battery?
Are you running multiple batteries?
Squirrel
"No more Cpt. Kirk chit chat"
If its too loud, then you're too old
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jeffchilcott 
Platinum - Posts: 2,483
Platinum spacespace
Joined: April 11, 2002
Location: United States
Posted: October 15, 2006 at 11:10 PM / IP Logged  
Give me the low down and I will help with as much as I know about the vehicle
I need
Vehicle make year ect....
equipment..
size of box..
power
anything and everything you think to list list it and I will help with all I know
2009 0-1000 Trunk WR 154.0DB 2009 1001+ Trunk WR
2007 USACI World Champion
2007 World Record
2006 USACI Finals 2nd Place
will_22_82 
Copper - Posts: 89
Copper spacespace
Joined: October 07, 2006
Location: United States
Posted: October 16, 2006 at 11:46 AM / IP Logged  
well right now i have a 98 cutlass olds, not really wanting to get into anything tech with it till iget another car. I am looking to get a 2 door ford escort hatch. My gauge is 4 i think and 1 ohm stable, but not for sure my audio guys do the work. i dont tuch the stuff to keep my waranty. i have a legacy dvd/mp3 player. I am losing db there i know, but i am getting a clarion cd player. i have 2 hifonics brutus
BXi 1606D1600-Watt x 1 RMS @ 1-Ohm
amps. the box is smaller than needed cause i ave limited trunk space, even with the box built into the trunk. I hit 143.4 when the trunks open, lower when its closed, around 142.3 i think. so for the time being i decided to take them and turn them around to see a difference. maybe also the backseat dont know. the cd player skips when i have the system up due to it being sensitive. but i am not worried about that for now till i get another car
will_22_82 
Copper - Posts: 89
Copper spacespace
Joined: October 07, 2006
Location: United States
Posted: October 16, 2006 at 12:33 PM / IP Logged  
i have a kinetic 800wat  16 volt
jeffchilcott 
Platinum - Posts: 2,483
Platinum spacespace
Joined: April 11, 2002
Location: United States
Posted: October 16, 2006 at 8:41 PM / IP Logged  
kinetik 800 watt 16 volt?     what?   They have an 800 series battery
and hey have a 16 volt series.
the 16 volt is 14x12x8   its huge.     are you sure you dont have a 12 volt 800 series battery
2009 0-1000 Trunk WR 154.0DB 2009 1001+ Trunk WR
2007 USACI World Champion
2007 World Record
2006 USACI Finals 2nd Place
Flakman 
Copper - Posts: 365
Copper spaceThis member has made a donation to the12volt.com. Click here for more info.spacespace
Joined: April 25, 2005
Location: United States
Posted: October 17, 2006 at 12:03 AM / IP Logged  
Here's a good article regarding sub pointing http://www.installer.com/tech/aiming.html. It's always good to experiment with different angles and directions, though. Acoustics of the vehicle in question can affect the final outcome as well. The article makes some very good points and has graphs that show the difference in SPL.
The Flakman
I feel strange. I have deja vu and amnesia at the same time.
John | Manteca, CA
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