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-   General SQ (https://www.caraudioforumz.com/general-sq-15/)
-   -   A Debate on the many different aspects of sound (https://www.caraudioforumz.com/general-sq-15/debate-many-different-aspects-sound-7324/)

Paul Niwranski 02-04-2005 03:06 PM


The biggest reason for porting doors is to extend the useable frequencies of the mid you are using. Using the port tuning frequency to extend past the useable output of the speaker
Is this not the biggest reason people say to run woofers IB or at least sealed? To get the lowest response from the speaker?

One of the best cars I have ever heard for midbass/ up front bass was SUX2BU's Avenger. We used to turn the 12 in the back off and just listn to the midbass in the doors. The xover point would move around a bit between daily driver and SQ comps but was generally in the 45hz range high pass. And yeah, they were IB in the door.

His truck with the B&W 7s in the KPs plays very low as well.

After experiencing these two vehicles I just cannot see what gain there would be from trying to extend the response of the midbass. Especially if a sub is in the car.

I'm open mined though (contrary to popular belief) so I will experiment with this in my car when I get to that point.

JohnVroom 02-04-2005 03:52 PM


Is this not the biggest reason people say to run woofers IB or at least sealed? To get the lowest response from the speaker?
I agree with Dukk?


I'm open mined though (contrary to popular belief) so I will experiment with this in my car when I get to that point.
I disagree with Dukk... whew, all is right with the world, Hell will not freeze over today!

[ February 04, 2005, 04:53 PM: Message edited by: JohnVroom ]

defro13 02-04-2005 04:42 PM

there is alot to said for excusion limiting at tuning freqency of a vented box compared to ib or sealed. im not sure where this discussion went off track and went in the getting the lowest possible from the doors

slow/n\low 02-04-2005 07:46 PM


Originally posted by Tim Baillie.:
Here the scores from the USAC site.............

http://www.soundoff.org/04finalsres.htm

Advanced
Pro 601-1200
Place Name Score
1 Alex Mendoza 271.27
2 Anthony B Davis 268.15
3 Chris Pate 258.43
4 Calipso-FX 252.91
5 Dave Oakley 226.59
6 Jay Stolzenburg 221.1
7 John Dix 181.83



Advanced
Pro 1201+
Place Name Score
1 Cory Himel 289.26
2 Doug Winker 267.12
3 Wild Bill Pallow 211.43
4 Michael Milhauser 207.63
5 Rodney Findley 206.85
6 Performance Audio 204.64
7 Dennis Chapman 196.3


Expert

Place Name Score
1 Mark Eldridge 292
2 Gary Biggs 278
3 Jason Leslie 228
4 Jason Syner 216
5 Ed Dillon 197

Dave how did the scoring work against you at finals. Where they picky about anything in particular.? I was looking at those scores posted. It seemed to be competitive between 1-4 but such a large gap between 4-5. 5-7 are also quite close? Looks like it was 2 teered.

You indicated you did well at SQ, so was it install they docked you on?

defro13 02-04-2005 08:36 PM

yes it was the car was originally not built for competition. i lost 30 points on install for various things, things i know i would lose on, but the trip to kansas was to be alearning experience for thjis year

Icon 02-04-2005 09:30 PM

defro,
Ya I thought the fuses in the rear window was a great idea, to bad they used it against you for theft, it stuff like that that dings you.

However I thought the car was over processed, I even tried to show you what I meant; we agreed it was different references. Your car however sounded wonderful and I was impressed with what you did with it.(workmanship was really good I know why you guys get repeat customers now)
However please try a lesser reference and look for the sound of the person blowing across the flute (USACI track) I heard it in every car but yours. If I were judging it would have been one point I would have noticed.
I hear you got yourself some F1 speakers, now that will truly be a treat to hear…
Your wife finalize what she’s using yet, can’t wait to see a woman eat up the competition. ;)

[ February 04, 2005, 10:42 PM: Message edited by: Icon ]

PEI330Ci 02-04-2005 11:44 PM

I have the ability to generate T/S parameters for raw drivers. (forementioned LMS/LEAP combo) But, I have found very large conflicts between what is NOT supposed to work in a car, and what HAS worked.

I'm really begining to believe in trial and error to a degree that makes me nervous.

Back to trying...

Adam

Starterwiz 02-09-2005 07:13 AM

The best up front bass I ever built was with a pair of 8W-1's sealed in the doors of a Grand Prix.
Took a while to build, but totally worth it.

http://sootoday.com/content/forsale/...&name=Car+Trek

goalie 35 02-09-2005 11:53 PM

to defend daves design on porting the doors well this was done by mike mineo way back in the early 90s in his camaro. having seen this car, and seen daves car, and both of these cars do very very well on the sq circuit.......... this is a strong statement to the design philosophy, but it has to be a properly built door with "it" being influenced by the speaker paramaters. the easy way to do midbass is hole,dynamat, screw, but a very qualifed tech ie. dave, will find the best way, even if its not the easiest way, to do something, so i have to belive that daves system is the best way to do "his" application.

Paul Niwranski 02-10-2005 02:04 PM

^ You left a little on your chin dude... :rolleyes:

Interesting that you bring up Mineo. That dude had a SH|TLOAD of processing in his ride...


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