Well I tried a single sub setup so I could drop my Sundown 3K down to .5 Well I wasn't happy with the numbers some build this.
6 cuft net with 3 - 6" aero ports tuned to 43 hz. I hopping it will peak around 49-50 hz. Well here are some pics:





I did 45 all the corners but didn't get any pics(sorry). I 'll glass the inside & out tomrrow . what do you guys think? My goal is 150.

Should work well.
What subs?
What vehicle again?

just food for thought...maybe single sub numbers suck in you car...mine a GREAT. i was able to do a 152.9 with single sub and with 2 subs i was able to do a 153.8 My clamp power both times was within 300watts so in my case it is all about the box. But if u have a small car that is another ball game. JUST MY .02 cents.


TEST TEST TEST

all I can say is test test test! it talks time to get a good sytem tuned just right for the car! I have done a 148.1db (sealed on the dash) with 1440 clamped watts and a single 15" in a dodge neon! (trunk car) if you want some help feel free to hit me up and and we will see what we can do to help!

I'll do somemore testing with 1 sub but I need my number up for a Street Beatz show this weekend. I know I do high 140's with two subs....hoping this box can get me close to 150

Well the box is in.....Aero ports man these thing move some air. Got some questions
1) What is the best way to seal around the ports?
2) How far should the ports be from back of the car?
The ports are all the way to the rear of the car now.

idk if u have a meter or not but every car is diffrent with box position. u will have to get on a meter and start moving your box and find your higest number. As for the ports..... try some silicone....pull the port out and shoot some silicone around the edge and screw it back down.

Port is real close to the hatch.


Its sounds then i expected. Considering its tuned to 43hz.

Normal rule for ports. If u have 12 inches of port, there should be 12 inchs of space from the end of the port to the next solid object. In some cars this rule is truen but some cars it not. Test and tune, move the box around and see what u can get. And if ur going for strickly burping then tune alittle higher. Just my .02

This is not strickly brup car. Needs to play music. I'll be doing StreetBeatz and Bass Race. I have a few thing I can do now. But i'm going to see where i'm at now before I make any changes.

Thanks for the advise i'll keep everyone posted.

Well here they are!!
42 hz

43 hz

44hz

45hz


Still not happy....only gain 1 DB

those arent bad numbers the thim=ng with SPL is test test test and then test some more im sure youll get where u want to be

Thanks i'm going to make a few changes and test some more. I really want to see I 150's out of this setup. Alot of testing ahead.

also remember for StreetBeatz the windshield meter is at the center of the dash and not on the right hand side. So if your testing on the right side you might be louder with the center dash location. Center windshield 1" above the dash

what amp are u running and what sub coils do u have? any batteries?

Yea i know ...I'm also testing for NSPL. My thinking is if I can brup around 150 think I should be able to play muisc in the high 40's. I could be wrong be being NSPL is the main org I want to run in this year. My main goal is brup. I did cheak center of the window on music...does like 145 avg. I haven't check at the head rest.

XFL
My setup is in my sig....only thing that has change is I have 2-2400 and 2 Magna Power batteries. Gives me 366 ah.

u can always try changing the setting on ur HU. sub input and frequency. also play around with the gain on the amp. on most sundown amps u dont need to turn the gain up more than about half. i have seen when u turn the sub settings down u get a cleaner signal and it will sometimes give u a higher score. i noticed this on the couple pics that u posted.