Variable Tuned Ported Box help me:)

[Ruler]

I am going into year 12 and have to do a project for my hsc major work, im planning on redoing my entire car sound system. anyway part of the project has to be an innovation so while trying to work that out i was wondering wether the make a spl box, or a box suited more towards just daily with a low tuning....

So no the plan is to make a variable tuned box with 1 L shaped port on either side with on giving a low maybe 25-30 hz tuning, and one on the other-side giving a higher tuning for more spl purposes. then the idea is to block of one side at a time to change the tuning of the box from daily to more spl orientated. can anyone give me an insight to what they think or wether this is not going to work well.

one more question is, i am planning to run 2 dd1515's with a dd1mb amp at around 1200 wrms on 1 ohm. will i need to upgrade from my stock alternator, but i do think i will need a new battery in the back. any thoughts?

some picture to try make it make more sense:

Click to read more...

 

[IDSkoT 5,000+ posts]

Just make a swappable port...

Much easier. //content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gif

 

[bubbagumper6 5,000+ posts]

It should work but if I'm understanding correctly your going to want to slide the blocking pieces in from above right? Well how do you cover the small opening on the side that you want to use?

 

[plugitin 5,000+ posts]

id just make a swappable port...baffle with aeros to just bolt on

 

[-Leister- 10+ year member]

x2.

You can always plug up an areo or change them.

 

[plugitin 5,000+ posts]

i just make two baffles, each with different size/length aeros for different tuning. Then you can just bolt em on.

 

[-Leister- 10+ year member]

Your talking about bolting on the whole baffel or just the aeros?

 

[IDSkoT 5,000+ posts]

x2.
You can always plug up an areo or change them.

You're forgetting a really important principle.

Ported boxes are bigger, internally, vs. sealed.

So if you just "plug an aero" you put the driver in a huge sealed box, rather than a proper sized sealed box.

 

[AudioXtremes 10+ year member]

No, multiple aeros tuned high then plug one and drop tuning.

 

[Ruler]

thanks for the input, i might have to mess around with some pvc to make some aero ports to make this easier, im not sure where to get aero ports in australia so i will just make some, plus making them will probs add some hours to the 70 hour target.

thanks, all

 

[-Leister- 10+ year member]

Im sure you can find decent areos around here for cheap.