4 Fi Audio IB3 18's walled off 15Hz tune in a VAN BUILD LOG

1 month. I'll be MIA for 3 weeks.

 

can't wait to show ya when she's done! Just tweakin the front stage has already made it better.

 

Hey everyone, I am back...I don't get internet back on till wednessday, wed night I'll try to get caught up on email and posts. I got my 2nd spool of 0 gauge, so I'll be getting the alt in ASAP. WOW my ears are numb... front stage is still killer, tweaked a little more, and still turning heads all over town.

Also, I made some posts on a few forums a while back about enclosures getting so large that the port no longer functions properly. I was repeatedly told WinISD is right..no matter how big, the port still works and still yeilds a larger gain. Well my 2 IB3 18's off 2 EP4000's aren't much louder in 256 cubes than the single one in 22 cubes off 2 walmart HTIAB amps... so I'll be cutting the towers down too.

 

still no internet, no time to reply....but I will when i can. Did the Big 3 today and got the alt in..I had a little alt whine before, now I got a lot but all my grounds are solid. BTW while the van sat 3 weeks, when I came back it was still sitting at 12.7V

I put a ground directly on the alt bolt to the chassis, another ground, same spot, on the alt to the negative terminal on the front batt, did 2 runs posative alt to posative on front batt. So get another toggle switch and run the deck constant and deck ignition to rear batts???

putting subs in NOW!

 

Steve Meade, you're a FREAK. And all you other dudes out there with 4 or more hardcore subs like BTLs Wardens DD and the like. These little IB3's are pretty loud, only using about 1/3rd excursion. Internet hopefully tomorrow, then I can get caught up.

 

I need more power for the amps! So all those s-10/Astro guys out there with the 4.3l... who has multiple alts? I think I want to pull the AC compressor and mount 2 there if I can make/find a bracket. I think I have voltage drop. I have an Iraggi 220 (160-200 amps @ idle). My lights fade a little when it hits hard, and, the subs run pretty hot...so I think the amps are clipping due to voltage drop.

So I loved it for a while without building a back wall, the rear doors don't get hammered on at all... but today I finally see that the roof and sides have massive flex... the foam and MDF worked, all 3 move separately, but each piece moves as a whole... it's pretty insane seeing how all 3 are separate solid pieces but the roof isn't connected to the sides with any reinforcement. So I got more 2x6's so I can build a frame for the back today.

Without the back wall, I am at 103 cu ft after displacement so I had a 13.5Hz tune. I cut the port down from 30" to 19" for a 15.5Hz tune. I'm gonna put the back wall in, reducing enclosure volume, raising the tuning, and adding rear support. The front is completely solid, the wall has zero flex, but in the back, there's just nothing connecting the side walls to the roof.

 

man I am in and out, was out to luverne today!

 

so can the IB3's out gas? I got brave and turned the sub control up from 2 to 5 and they were fine. I think when they were new they had to out gas, cuz they stunk a little..but I think Im ok now?

 

http://www.youtube.com/watch?v=r6W_sq2bn80

http://www.youtube.com/watch?v=cRhIVSbJRF4

 

do you have vids of yours in action? did we ever get a confo from you that you have 2 12's and a PR?

 

ya passive radiator

 

sweet, why is one a different color?