1243d with bandpass help!

[iggiafrica 10+ year member]

Also, whats the result of too little port area? Facing subs toward eachother head on? Facing them together at 45 degrees? Having the type rs playing 5-10 h wont damage them, will they? The specs say range is 20-200...any leway?

I really appreciate all your help... A month ago i didnt know the first thing about car audio...but this forums been amaing! You guys rock haha

 

[CAT MAN 5,000+ posts]

Also, whats the result of too little port area? Facing subs toward eachother head on? Facing them together at 45 degrees? Having the type rs playing 5-10 h wont damage them, will they? The specs say range is 20-200...any leway?
I really appreciate all your help... A month ago i didnt know the first thing about car audio...but this forums been amaing! You guys rock haha

too little port area can cause 3 things in 4th orders. massive port noise, less output, more controlled output.... usually all 3 happen at once for a new guy. not saying you couldnt do small port area but there is a fine line in small port area and a hole in the box

 

[iggiafrica 10+ year member]

Lol i know what your saying... Im trying to stay away from pvc and just do slot ports...also from what i drew up its more of a labarynth design..do 90 degree angles effect anything? Also. If it started being 2", then the board was 4" from the side wall and went back to 2 wide and so on for 3 turns, what happens? Essentially a multi-width port i guess..any harm there? Or a snail shell box that hits 10x harder? Haha

 

[iggiafrica 10+ year member]

I guess theyd be more 180 degrees

 

[iggiafrica 10+ year member]

How different would it be building just a ported box? Is port tuning pretty much the same?

And another bandpass question: what happens when the drivers are turned around? (Magnet in ported area)

 

[iggiafrica 10+ year member]

Is there anyway someone could help me out with all the winisd dimensions? Id really like to play with the different types of boxes..im off tuesday and plan on building. I plan to make a sealed, ported and 4th order for these 2 12s by the end of april... Winisd would be a HUGE help!

 

[iggiafrica 10+ year member]

Well i finally got winisd to work, but i cant change the reading to SPL.. it says error something divided by 0..and im not sure why the line counts from like -30 to 0....what does that mean?

 

[Kangaroux 5,000+ posts]

Mp3 files and the like measure volume in terms of decibels with 0dB being the loudest. I assume winisd adopted the same concept, though it's kind of a strange way of labeling the graph.

 

[iggiafrica 10+ year member]

Well...i dont understand it lol. Id like to see the spl that my designs could potentially produce

 

[iggiafrica 10+ year member]

Its been fun folks //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif illbe putting my top 3 designs in winisd tomorrow and see what will work best for what i need. Ill be building on monday, wish me luck!