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C Pillar 4th Order Bandpass 2 Fi Sp4 15's


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Posted

The port area thing with bandpasses, where to start is half cone area, which is around 125 sq in for you.

Try to see if you can find the sealed resonance of the sealed section, and tune the 4th there, that will give you the best output and playability.

2003 Kia Sorento

Team Subsonic Lows
Team Bassin' on a Budget


2016 Rebuild Under Construction

Best score: 150.2 at 40hz (3k, 2 Custom HDC3 15's) Usaci style(door open, in the kick)

Posted

Yeah I know about the sealed resonance thing I just don't have a wt3 to find it.

2006 Ford Explorer

2 Team AA/Sundown 15s

6th order

Ct Sounds 7k

4 PRV Mr500 8s

Rockford p1000-2

Team Subsonic Lows

Posted

I would start around 42hz, program I use estimated around 42hz with that sized sealed section with the t/s specs posted from fi.

So around 125 sq in of port at the tuning at 42hz would be a good start, though make sure to have the port removable incase you decide to change some things up.

2003 Kia Sorento

Team Subsonic Lows
Team Bassin' on a Budget


2016 Rebuild Under Construction

Best score: 150.2 at 40hz (3k, 2 Custom HDC3 15's) Usaci style(door open, in the kick)

Posted

Ill definitely do that, I appreciate the help! When I get a chance I'll work the port out, removable for sure

2006 Ford Explorer

2 Team AA/Sundown 15s

6th order

Ct Sounds 7k

4 PRV Mr500 8s

Rockford p1000-2

Team Subsonic Lows

Posted

i know i had (8 ) sa8s in a 4th which is really close to the same cone area and i was tuned to 40hz (by an honest mistake) but i got lucky because it sounded amazing... probably the most we rounded systems ive heard

Btw that was the first person. Ever banned by me while dropping a deuce. Feel privileged

Posted

seems the only way to get it tuned to 42hz is with 120" of port in 8cbft, any more port area and the port will have to be too long.

2006 Ford Explorer

2 Team AA/Sundown 15s

6th order

Ct Sounds 7k

4 PRV Mr500 8s

Rockford p1000-2

Team Subsonic Lows

Posted

well, stick with 120 sq in then, and see how you like it

2003 Kia Sorento

Team Subsonic Lows
Team Bassin' on a Budget


2016 Rebuild Under Construction

Best score: 150.2 at 40hz (3k, 2 Custom HDC3 15's) Usaci style(door open, in the kick)

Posted

yeah Ill do that, already got the port for it drawn out

2006 Ford Explorer

2 Team AA/Sundown 15s

6th order

Ct Sounds 7k

4 PRV Mr500 8s

Rockford p1000-2

Team Subsonic Lows

Posted

Love the choice of gear. Been curious about sp4s in fourth myself, tuned in on this one.

I had 1 in a 4th order, just not a wall. Specs were 1.8 sealed 4.4 ported @ 46hz with 64" of port, played 26-55hz. I liked it a lot it just didnt get low enough for me haha

2006 Ford Explorer

2 Team AA/Sundown 15s

6th order

Ct Sounds 7k

4 PRV Mr500 8s

Rockford p1000-2

Team Subsonic Lows

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