SPL system for 00 Civic

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dzelaya18

Copper - Posts: 49

Joined: May 14, 2004

Posted: December 02, 2005 at 2:39 PM / IP Logged

Hi. I would like to pull out the mediocore system in my '00 Civic sedan. I am begining to prep the car for show competition, and would like the audio portion of the car to be able to compete in SPL comps.

Now, those of you that have built Civics before, givin the size and design of the car, what would I need to do to get the car into the 130+db range?

Thank you for any help in advance, I appreciate it!

auex

Platinum - Posts: 5,041

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Joined: December 23, 2002

Location: Arizona, United States

Posted: December 02, 2005 at 2:52 PM / IP Logged

Not much. 1 12" with 400watts in a good box.

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dzelaya18

Copper - Posts: 49

Joined: May 14, 2004

Posted: December 02, 2005 at 2:56 PM / IP Logged

Really? Could you please elaborate? I have 2 12's in a sealed box with 400w rms feeding them, and while it does move your hair a bit and rattle your teeth, I know I would get my hat handed to me at any audio comp. How could I change the way things are set up so as to hit harder like that? I thought I would need way more power to really compete at that level.

arrow12

Silver - Posts: 527

Joined: October 06, 2005

Location: United States

Posted: December 02, 2005 at 3:03 PM / IP Logged

What class are you trying to be in?

That's my opinion. Take it, leave it, or correct me.

dzelaya18

Copper - Posts: 49

Joined: May 14, 2004

Posted: December 02, 2005 at 3:31 PM / IP Logged

I'm not sure. I've had systems for years, but have never competed before. I do know that I would like to get the system output up into the 130-150db range. I want to learn more and go all the way...but I realize that it will take alot of time, money, and effort.

Alpine Guy

Platinum - Posts: 2,478

Joined: October 18, 2003

Location: Canada

Posted: December 02, 2005 at 4:08 PM / IP Logged

If you have the dedication and time to plan this out you can definately hit 140db+ with a single woofer and under 500 watts rms. I have a box sitting here for a old style Alpine Type-R 12" subwoofer that hit 143 db in an suv running off a Alpine MRD-M501. I built about 10 different box designs i belive and ended up with those numbers. Download WinIsd Pro from http://www.linearteam.dk/default.aspx?pageid=newdriver and play with the program designing ported box's for particular woofers.

2003 Chevy Avalanche,Eclipse CD7000,Morel Elate 5,Adire Extremis,Alpine PDX-4.150, 15" TC-3000, 2 Alpine PDX-1.1000, 470Amp HO Alt.

JMaxx93

Copper - Posts: 73

Joined: December 02, 2003

Location: United States

Posted: December 02, 2005 at 5:20 PM / IP Logged

dzelaya18 wrote:

there is a thousands of dollars in difference between 130 and 150 db. and "going all the way" means your car wouldn't be legal on the streets nor would it be drivable more that a few yard. (ie off the trailer to the comp spot) if you want to go deaf just put a pencil in your ear and save some time and money. ;) sorry i type before i think, that last part was a joke.

dzelaya18

Copper - Posts: 49

Joined: May 14, 2004

Posted: December 02, 2005 at 5:37 PM / IP Logged

Wow. That was so helpful. Thank you. SPL system for 00 Civic -- posted image.

jeffchilcott

Platinum - Posts: 2,483

Joined: April 11, 2002

Location: United States

Posted: December 02, 2005 at 5:57 PM / IP Logged

We have "Gone all the way" in a 98 civic coupe. 2 kicker l7's 2 crossfire 1000d's one kenetik 1800 battery. 150.5db.......This is loud enough to set the world record in USACi basic Stock 301-900

We Still have the box and all designs, let me know if you would like some help.

We would change from the 2 subs/2 amps in the SPL box after every show to 2 subs in a streeable box with one amp.

on the dash the car was doing 148.9db, not a bad score for DB drag either, but outlaw USACi style it would do a 150.5

2009 0-1000 Trunk WR 154.0DB 2009 1001+ Trunk WR

2007 USACI World Champion

2007 World Record

2006 USACI Finals 2nd Place

dzelaya18

Copper - Posts: 49

Joined: May 14, 2004

Posted: December 02, 2005 at 6:11 PM / IP Logged

jeffchilcott wrote:

We Still have the box and all designs, let me know if you would like some help.

That would be great, thank you. I would really appreciate it.

Did you guys ever notice that the Civic coupe's seem to hit harder than the sedans do with the same gear? My buddy's '05 coupe has the same power output from the amp and the same 12's in the same box, and his car hits noticeably harder than mine. Granted, Honda puts much better sound dampening in they're cars than they did five years ago and the basic coupe design means less space for the bass to fill, but it still bugs me. I know its not electrical, because my amp reads a continuous 14.8 volts...

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