Ports firing in different directions?

[Bazzheadnorway]

Hi i have a dual 15" sub box that currently has two 4" dia and 29" ports firing from the side of the box. The box is tuned to 21hz and works fine but i want to try to get more output from it by tuning a bit higher and allowing a bit more air through the box, but could i place the new ports in a different direction would one think?

Pic of the box (atm) in attachments

Click to read more...

 

[Lbetts818]

Not sure where your going here? As in port a facing one side and port b facing the other? I'd think that would cause some form of a issue. What subs and what amp? And you looking to crush lows? good bandwidth? Details and we can help. I have a recommendation kinda but need to know subs and amp and vehicle. All I use is aero ports.

 

[Hertz Mafia]

Box is to small

Ports are to small

Prly tunned alittle low

What woofers are you running? Most 15s want 8cubes+ and more port

 

[Bazzheadnorway]

Not sure where your going here? As in port a facing one side and port b facing the other? I'd think that would cause some form of a issue. What subs and what amp? And you looking to crush lows? good bandwidth? Details and we can help. I have a recommendation kinda but need to know subs and amp and vehicle. All I use is aero ports.

I wanted it to kill the lows, it does but i want more haha. The car is a Nissan Leaf (not connected to the OEM electrics) have two 105ah batteries wired in parallel that i charge every night with the car. The woofers are from home audio speakers ( Cerwin Vega Xls-215 ) dont know tha parameters:/.

But yes, i was thinking to put the 3rd maybe 4th port to the front baffle, = two side firing, 1or2 front firing. Crisis inside the box?

 

[Lbetts818]

What's your max space available? I pm u my number shoot me a text and I'll help ya out

 

---------- Post added at 09:24 AM ---------- Previous post was at 09:23 AM ----------

 

More ports is not the answer. Ideally a single is more efficient than 2-3-4 different ports

 

[Bazzheadnorway]

What's your max space available? I pm u my number shoot me a text and I'll help ya out 

---------- Post added at 09:24 AM ---------- Previous post was at 09:23 AM ----------

 

More ports is not the answer. Ideally a single is more efficient than 2-3-4 different ports

Arright, this is actually the max space i have now, even mounted the subs invertedly to get more volume, any tips is much appreciated tho

 

[Lbetts818]

I'd do 8.5 cubes two 6" aero(pvc pipes) at 20" long each tuned to 27 if it was me. Or order a real aero and do 8.5 cubes with a 10" port at 24.5" long tuned to 28.

 

[THATpurpleKUSH 5,000+ posts]

Ports need to stay together on the same face. Don't put them wherever you please. Those ports are way too small for 15s, each 15 should have 2 4inch ports. A single large port is far more efficient than multiple small ports. I would rebuild the box to the proper size for 15s and use 2 6inch ports or 1 8 inch port.

 

[Lbetts818]

2 15s 10.4 cubes 10" aero tuned to 26. Show play some lows.

 

[Lbetts818]

@THATpurpleKUSH ^^^^ this this this. Aeros 7-9 per cube is my sweet spot. 6-8 for under 28hz tuning. Lots of trial and error learning

 

[Darth_Immitis]

27 ftw! I wish I tuned mine lower. How much output would I lose by extending the port internally obviously losing some airspace but if I feed it more power to make up for the smaller volume will it still wang?

 

[Lbetts818]

That's why I love my audible Engeneering ports. I have 5 sections cut so I can tune from 34-32-30-28-26 just by removing chunks

 

[THATpurpleKUSH 5,000+ posts]

[quote name='Lbetts818']@THATpurpleKUSH ^^^^ this this this. Aeros 7-9 per cube is my sweet spot. 6-8 for under 28hz tuning. Lots of trial and error learning[/QUOTE]

That port makes those 15s look like 12s lol. 7-11sq in of port per cubic foot is a good rule of thumb to use with aeroports. Big Ass Ports makes adjustable aero ports

 

[Boomin_tahoe 5,000+ posts]

I dunno...home speakers in a car tho?!?!

 

[jordon]

alot of home audio subs are used in cars. Espically on the sq side of things. Most of home threater are designed to play low and do good doing so.