aero/round port bend question.

[audioholic 5,000+ posts]

so if i did a 6" or 2 6" aeros, it should lengthen them a good bit right?

Yes, port tuning is based not only on port length, but port area as well. The larger the port area, the longer the port is required to be to maintain the same tuning point.

Think of a port as a resistor to air flow. To create a specific tuning point, you want to create a specific resistance. The larger to port diameter is (port area), the longer the port will need to be to keep the same resistance.

If you think of it in smaller, more common sense terms, a bigger hole displays less resistance than a smaller one, right? And a longer port displays more resistance than a shorter one. Its these two criteria that must both be accounted for to properly calculate port tuning.

 

[helotaxi 5,000+ posts]

It's funny to think what internet forum people would be like in real life.

Why, you think that I don't throw the BS flag on a regular basis in real life? It's my experience that if you embarrass someone bad enough, often enough and in a public enough manner, they eventually quit talking out of their a$$ and listen rather than speak when it comes to a topic that they know little to nothing about.

I don't own a pair of kid gloves. I don't have time to worry about hurting someone's feelings. My job involves giving people the knowledge and decision making tools needed to make life and death decisions quickly and right, every time. I don't have the luxury of tolerating wrong information being put out there and being left uncorrected.

 

[Seriously_Tho]

It's my experience that if you embarrass someone bad enough, often enough and in a public enough manner, they eventually quit talking out of their a$$ and listen rather than speak when it comes to a topic that they know little to nothing about.

Another way to say that - if you repeatedly tell people they're wrong they'll eventually stop talking to you. You have over 8500 posts, which tells me you probably spend more time talking to people here than anywhere else. I don't wonder why.

I don't own a pair of kid gloves. I don't have time to worry about hurting someone's feelings. My job involves giving people the knowledge and decision making tools needed to make life and death decisions quickly and right, every time. I don't have the luxury of tolerating wrong information being put out there and being left uncorrected.

I know lots of EMS people like you, most suffer from the self-righteous syndrome. They deal with others in their worst moments and as a result they think they're smarter than everyone else.

Your signature has three quotes talking about how stupid everyone else is. That tells me all I need to know.

 

[miker 5,000+ posts]

Wow, this ****** pisses me off..

 

[helotaxi 5,000+ posts]

Another way to say that - if you repeatedly tell people they're wrong they'll eventually stop talking to you. You have over 8500 posts, which tells me you probably spend more time talking to people here than anywhere else. I don't wonder why.

If you look at how long I've been on this site, and compare that to other that have been here as long, I don't post here frequently. I'm just used to dealing with people that don't get all hurt when they get told that they're wrong. I also doubt that I have 100 posts outside the technical areas of the forum.

I know lots of EMS people like you, most suffer from the self-righteous syndrome. They deal with others in their worst moments and as a result they think they're smarter than everyone else.
Your signature has three quotes talking about how stupid everyone else is. That tells me all I need to know.

I don't teach life saving. I don't teach medicine. I teach the other side, I've been doing it for a long time and I'm very good at it. I'm used to working with adults. When overly sensitive people show up for training, they either get thick skin quickly or fail out. It would appear that you can't handle criticism or aren't secure enough with yourself to accept that you're wrong. You can keep getting all butt hurt about being called out or you can act like a man and take it. I don't care either way. The fact remains that you were still wrong.

 

[audioholic 5,000+ posts]

Another way to say that - if you repeatedly tell people they're wrong they'll eventually stop talking to you. You have over 8500 posts, which tells me you probably spend more time talking to people here than anywhere else. I don't wonder why.


I know lots of EMS people like you, most suffer from the self-righteous syndrome. They deal with others in their worst moments and as a result they think they're smarter than everyone else.

Your signature has three quotes talking about how stupid everyone else is. That tells me all I need to know.

WTF is your problem? You started off admitting you dont know jack about porting, followed it up with a completely false theory, and then get butthurt when a knowledgeable person corrects you? Seems to me YOU are the self righteous one. Your rear wave/rear wall theory was completely wrong, he corrected you, get over it.

 

[T.I.K. 10+ year member]

I know this is probably not the brightest question ever asked, but as you lower to port size/area, does the box begin to perform more and more like a sealed box?

 

[MONSONwarrior Premium Member]

I know this is probably not the brightest question ever asked, but as you lower to port size/area, does the box begin to perform more and more like a sealed box?

no, when you lower the port length your tuning will raise, and if you lower the port area you'll get port noise. and if you lower both you'll maintain tuning but have lots of port noise.

 

[helotaxi 5,000+ posts]

Port noise is a sign of compression. Get enough compression and the port stops acting like a port and the box begins to act like a sealed box when you apply lots of power to the sub. Flaring the port opening on each end will reduce the effects of compression to a point and allow you to run less port area. Also you can get away with less port in a low powered setup.