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View Full Version : 12" Fi BTL N3 enclosure NEED HELP.



KZnova
06-19-2011, 12:50 AM
So what we have:

Golf 4
12" Fi BTL N3 dual 1.4 coils (0.7 wired)
MB Quart Discus 2000.1 (true rms, same board as on AQ2200)
65Ah battery (noname, but soon will change for Stinger 1700)
0/1 Ga from (only + connected directly to battery)
Alpine 9886 HU


What we need:

Maximum dB output that we can take from it. Im thinking about 1.7 cuft clean vol. and four 110mm diameter tube ports tuned 50-53 Hz. But they are too long, what do you thing maybe it will be enough to use three tubes? Also what do you thing about clean vol. that i choose for box? And maybe somebody know Golf 4 resonance?
Thanks.


P.S. Now sub is playing in music box, you can watch it on YouTube:

http://www.youtube.com/watch?v=WnMISc69IZU

KZnova
06-20-2011, 09:49 AM
no recommendations? :suicide:

RAM_Designs
06-20-2011, 12:31 PM
With just 2kw on tap, you can go bigger on the box. I wouldn't do 1.7ft^3 unless you're running a good 5kw to that sub. Do 2.5ft^3 with the same 50hz tuning.

Buck
06-20-2011, 01:05 PM
Go with a bigger box, you aren't running that much power to it. Big box and big port. What's the resonance frequency of the vehicle?

RAM_Designs
06-20-2011, 03:48 PM
Better yet, just grab a 6" or 8" aeroport so you can adjust the length to find the best tuning for tour install.

KZnova
06-20-2011, 05:53 PM
With just 2kw on tap, you can go bigger on the box. I wouldn't do 1.7ft^3 unless you're running a good 5kw to that sub. Do 2.5ft^3 with the same 50hz tuning.

ok man, i think i will try something about 2-2.2 cuft


What's the resonance frequency of the vehicle?

that the problem, i dont know and i dont have termlab :(, but it should be about 51-55 hz

Buck
06-20-2011, 06:09 PM
If you are only doing 2000w or 2500w, you could do a huge box (theoretically) for burps.

Bettr n' Revrse
06-20-2011, 06:16 PM
Or sell it to me...