posted
planning to wall the qx4.. this is going to be mainly for bassrace/sick daily driving.. now i have room to wall behind the rear seats and have also thought of just coming up behind the fronts. besides seating options.. what losses or gains could i pick up from walling infront or behind rear seats.. will my lows be better further back? #s lower with it back? i know ill have less space to work with with it back but i know i could make it happen
Posts: 1137 | From: florida | Registered: May 2003
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posted
hey, i walled my 86 monte carlo with 6 10's, now i know from experence that your going to have high #s with the higher hz. but .... however you can build the wall with a removeable port cover so you can hit the lows with the cover on and for daily use , and when it comes time for comp. remove it to get the #s with the higher frequency's
-------------------- AND ON THE 7TH DAY......GOD CREATED BASS...... -1978 GMC dually-
-1972 merc. capri- SOLID STATE A.M TRANSISTER RADIO 12 WATTS 1-4X7" DASH SPEAKER Posts: 84 | From: tn | Registered: Nov 2004
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posted
oh yea its deff gonna be tuned rediciously low.. i wouldnt have it any other way
Posts: 1137 | From: florida | Registered: May 2003
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posted
my personal thought would be behind the back seats, so you can keep it a 4 door and 4 seater. also you will have more room for the waves to travel giving you better lows. i always heard that a wall was better for higher frequencies cause the waves dont have as much room to fully expand with lower frequencies. and being a daily driver you would probably want to get some hoes in the back seats. call them the seats of death. or orgasum seats.
-------------------- Infiniti J30 2 kicker solo x 12s 2 kicker 2500.1 @ 1 ohm wall, 7 cubes, 100 sq port 149.1 DB at 42hz. DiRtY SoUtH DEAF SqUaD Posts: 1361 | From: Columbia, SC | Registered: Jan 2003
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quote:Originally posted by maxxology: my personal thought would be behind the back seats, so you can keep it a 4 door and 4 seater. also you will have more room for the waves to travel giving you better lows. i always heard that a wall was better for higher frequencies cause the waves dont have as much room to fully expand with lower frequencies. and being a daily driver you would probably want to get some hoes in the back seats. call them the seats of death. or orgasum seats.
posted
the less interior room the higher the note youll have to play if you do behind the seats it may be as much as 5hz or more lower for the "magic note"
if you make it square enough you can slide it forward for comps and then back for the ride home
-------------------- It's all in the box. Posts: 1981 | From: Indiana | Registered: Dec 2005
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posted
put it behind the front seats for higher spl's. the smaller your cab the better. then give it a smaller port to play better at lower frequencies. if done right you'll get the best of both worlds higher spl's and great lows. just my opion though.
-------------------- http://cardomain.com/id/jkd20bry Eclipse CD 8455 2- XX Colossus II amp's 2- Eclipse SW 9152 PRO Ti's 5- yellow tops 95 Chrysler Sebring w/wall Posts: 190 | From: grandjunction, colorado | Registered: Apr 2006
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posted
not to jack the thread but approx how far would you need for those lows such as 25-30 hz
Posts: 352 | From: Scranton , pa | Registered: Jan 2006
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posted
Ok I have a question. almost every wall I have seen has the port on the drivers side and subs on passenger side.
Why? the mic is placed on passenger side, wouldnt it be better to have the port on that side of the vehicle?
Im designing one right now and I have never done one before, this will be in a van, and it will be a bass racer, so someone school me on why its done this way.
posted
Im just trying to understand the theory, like I said I have never built one. in my current vehicle the port is way louder then placing mic in front of subz.
I talked my Sensi this evening and now I have a better understanding of how it works.
posted
The theory on the port placement has to do more with trial and error then theory. Many people have tried it the other way and it works better with the port on drivers side.
On the note about a woofer pumping into the mic. The idea is good, but mostly wrong. We have more then a few cars with bandpass enclosures. The port is on the drivers side and the woofers are in the box. The amps are actually mounted on the passengers side of the box. Nothing is actually pointed at the mic.
I have a car that I use for daily with 2 12s in a wall. I have 4 4inch aeros in the box currently in the center of the box. It plays music great and it has a wicked nasty hump at 17hz
-------------------- Just some thoughts from a nobody. Posts: 3683 | From: Lakewood,Ohio | Registered: Aug 2003
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posted
wow, 300 square inches of port is a little too much, isn't it? If you want to build a bandpass, check out the BP from the camp bandpass thread. It looks promising, especially the one that teamsubgopoof made. Good luck with your wall!
posted
I dont think the port is to big. But Im a SPL newb so take it for what its worth, Im gonna try and see what it does, I have seen some Massive ports in a few walls, and They SLAMMED.
Its all trial and error from my understanding, and I have read the whole camp bandpass thread a couple of times, there is good info in there for sure.
posted
daily driveing, port in the center, or top or bottom higher spl you want driver side port sq is suffering when this is done imho, i was louder with driver port, didnt sound nearly as clean
-------------------- 2006 Bass Race 149.9 World Finals 2nd place H.O. Alts FI If you dont like what I have to say, just contact Boomingcreation he will erase it for you Posts: 16072 | From: tx | Registered: Dec 2003
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quote:Originally posted by MrCrowley: At 145-150 dB sound levels, there isn't much SQ
beg to differ......i have a wall that i play music through.....27 cubes with 461 sq port, it does a 58 with a tone, broke out of the 149 class in bass race last year, my frequency is between 58-61 hz depending on humidity. temp, what state, altitude barometric pressure......but if you want to hear sound quality and have it hurt you can have it both ways....you just have to work at it and an apex processor helps alot.
-------------------- TEAM STETSOM USA First to Compete with Stetsom Amps in the USA 150+ with a Grand Funk Railroad song 2005 Db Drag World Finalist SS 1-2 NW 9th Place 151.1 db 2006 NSPL Maryland State Record 157.9 db 2006 DbDrag World Finals Competitor SS 1-2 8 th Place 159.9 db 2007 NSPL Maryland State Record 160.3 2007 NSPL World Record 2400 amp ama 160.3( that didnt last long) 2008 Maryland State Record 159.6 2008 World Finals (burnt shi+ up) TEAM STINGER MARYLANDS LOUDEST DAILY DRIVER Posts: 784 | From: Glands Burning Maryland | Registered: Oct 2005
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quote:Originally posted by MrCrowley: At 145-150 dB sound levels, there isn't much SQ
beg to differ......i have a wall that i play music through.....27 cubes with 461 sq port, it does a 58 with a tone, broke out of the 149 class in bass race last year, my frequency is between 58-61 hz depending on humidity. temp, what state, altitude barometric pressure......but if you want to hear sound quality and have it hurt you can have it both ways....you just have to work at it and an apex processor helps alot.
Yeah, I was just playing but 150+ dB's and sound quality rarely go together.
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