Fi Technical

I am running a fullyloaded bl15 off a planet audio bb2400 making about 1600rms. Electrical- big three, 1/0 throughout, second battery in rear, voltage stays around 14.3, drops to 13.6 for tones. My first enclosure was 5ft^3 tuned 36, 60 sq" port, with bracing, angle boards and routered port edges. Sub faces drivers seat while port fires up behind passenger seat. I hit a 143.8 meca style. Built a new box 3.5 ft^3 tuned 45 with all the bracing, angle boards and routered port edges and dropped to 141.7. I wanted to find out what box changes I may make to increase score, and if I was crazy trying to reach a 150 with a bl?

Im making a box myself but im having a little dilemma im my box construction... i have a 4.35 cube box... im plaing to make the port 2.75 inches wide.... im just stuck on the port length. iv been using diffrent websites and calculaters, but i they all say diffrent port lenghts... iv used 12volts.com, re calulater, torres subwoofers calculator... im thinking the trres calculater is good, but im just geting a second opinion... can somone help me out with this dilemma im having? the specs are 16 height, 35 wide, 17 depth, 2.75 port width, Length? 21-28 inches... wanting to tune it to 31hz.

I was planing to make a box for my BL 15... but i have a few ideas.. whats the diffrents from the sub facing toward the rear of the vehical? Vs. The sub faced up ward toward the trunk lid? and what is a good tuneing for the sub? 35hz? 32hz? or 30hz? i have a 1500 rms amp... and i listen to rap and metal.. rap most of the time...

would a BL 15 be alright all the way up to 5 cubes of air space? i know fi recommends 4 for optimal, but im just curious if it still sounds how its supposed to up to 5 cubes.

Just wanted to know what peoples thoughts are on the aq1200d amp.. how are they? will they hit hard with the 15" BL ? i heard their rms output is unnderated. but listed at 1200RMS at 1 ohm

Hey everyone ! I got the aq1200d and the 15" BL ready but i made a ported box that i want to make smaller for more room in the trunk and its just a pain to get in. I was just wondering what is the smallest ported box measurements I could use to get as much as i can out of the sub while being tuned to around 32-33 hz. Please help! thnx

Would you guys suggest tuning a BL 15" to 28hz? Has anyone tuned their box for one that low?

I traded everything i had about 6 months ago, well, guy gave me good deal on getting all back and some new stuff he just bought. Anyway its 2 BL 18s, and 2 sundown 1500ds strapped. I had subs up, port back, 20 cubes before port and subs tuned to 33hz. It sounded great and definitely had the lows. box before was this: then i had new design done for wall behind front seats, same tuning, and specs, both boxes with 200+ square inches of port, wall box: Both boxes designed by chris at fishercustoms. I never use backseat anyway, but not sure if will make big difference as in louder if i go with a wall. any suggestions? or just go back how it was?

Looking at building sub box for BL 18 also considering possibly running 2 BL 18s and wondering minimum cu ft for both in the one box ported box-- is L=3' W=2' H= 1.5' i did the calculation right im sure but just wanna double check thatll be enough cu ft hey Thanks

Im designing my box now for my BL 18 and wanted to check something i read in the BL sticky for enclosures. For the ports, you need 12-16 in3 for each 1 ft3 the box is? So this means that the port would have the same volume or bigger than the whole box? Heres my box idea before i read this post, It has a little over 1 ft3 ports due to the aero. http://feat.putfile.com/profilepics/main/6...75120100648.jpg I will post picks of the trunk and the denesions later to see if someone can help with a better design.

i bought 2 bl 18's d2's in 2008, one in october, one in november. Now i am wanting to run 3 18's but was told not to mix those 2 with newer bl 18. I got these 2 with cooling, flatwind and universal options. Do you have any older bl's in stock or stuff to build one? Or could I run a new one with those? thanks

I ran 2 fi bl 18's 3 or 4 years ago off 2 sundown 1500s in like 15 cubes net. Now I am looking at running them again in a scion xb. I have a box already that is 12 cubes net @ 32hz, how well would the bl 18's do in this box off sundown 3500d? Would it be too small, the site says 5-8 cubes each. thanks for any help

I ran 2 bl 18's off 2 sundown 1500d's for little over 2 years with no problems at all. Those bl's had cooling, flatwind, daily options. Now they offer to have a 4" coil for extra $50. This time I will be running either an aq or sundown 3500 on 2 18's. With the 3500d should I go ahead and get the 4" coil, Im pretty sure the 3" would be fine since I ran the others with no problems that long. thanks for suggestions

I am running 2 FI BL 18's in about 15.5 cubes after sub and port tuned to 32hz. It sounds awesome for daily and really picks up the lows. I have about 200 square inches of port also. I did 147.3 db on TL first time, then a 152.4 on an audiocontrol meter saturday. Now, I was told I should make my box around 10 cubes after sub and port and tune to 35 or 36hz and it would probably meter better and still pick up the lows. Does this sound right or do you have any suggestions? Oh yeah, I am running 2 sundown audio saz-1500d's strapped on them now. Would it matter with a slot port or are aero's better? thanks for any help

I have made up plans for a 6cu ft box, after port and displacement. The port would be 4" Wide and tuned about in between 33 and 34hz. If i made the port 5" wide, it would take the box all the way down to 5.1 cu ft or so to be tuned to 34. The port would be 21.5 in tall. It just seems to me that 4" is small, but then again thats a lot of box volume to take up. I'm really hoping i'm just more worried than i should be about port size, and the 6 cu ft will work out. Any suggestions?

I got chris at fishercustoms.com to design me box for 2 BL 18's. Its little over 18 cubes before port and sub and around 15 after, tuned to 33hz. Port is 10.5" wide. Figured i would post up design, hopefully i will have it built next couple weeks. We been workin 7 days a week, so as soon as i get a break, will get started on it.

What do I sacrifice by choosing this option? and can I run 2k to my BL's if I pick this and the other power handling options?

Not at the same time! I have two boxes built for my single 12BL. (D2, loaded, daily) One is 2.5cuft @ 32. Slot port. Homemade The other is 2.0cuft @ 32. Kerfed port. PTS They are both designed around the 12BL t/a parameters. Two questions. Is the BTL a substantial upgrade from the BL? Could I use the 12BTL in the same box which was designed for the 12BL?

i did some measuring and the biggest i can go is 4.5 or less.. so ill have to get a bl 15 instead of the 18 that i had planned.. and i plann on getting a hifonics 1606. box tuned to 32. what you guys think. should i get any of the options. heres the box i got http://www.subwoofertools.com/forum/ported...mp;Fs=&CE=0

BL Series enclosure cut sheets! BL 10 1.2 cubic feet @ 32Hz BL 12 2.4 cubic feet @ 32Hz BL 15 3.9 cubic feet @ 32Hz BL 18 7.6 cubic feet @ 32Hz

Hey guys im wondering if anyone has any dementions for a box or can set one up for me for my car i use the BL for DD and the box needs to be 37inches or smaller in width and 18inches or smaller in hight, doesnt matter depth. Does any one have dementions to i can build a slot ported box, im too busy to even set up all the hertz or know the specs for a box for this sub so can you guys help me out please?

I'm currently looking at components to go with my 12" BL. I'm going to either go with Rainbow SLC 265s or SLC 265 Kicks. What I was wondering was with my box tuned to 32 Hz would my BL get loud enough up to 80 Hz to be able to have my high pass at 80 for the Kicks? Thanks

I was wondering if 6.75ft3 net volume at 32hz is good for 4 FI BL 12's in a ported enclosure with about 6,000 watts of power?? 6.75ft3 net volume, 32hz tuning.

I'm putting a BL 18" just with just the P chamfer in my van ill be running 1200 rms too it. the room i got is 49"w 41"L 41"H. i really need too see like a print out. too look at while i'm making it. i want it too hit low. and i know nothing about tunning so if you could explain that too that would be nice. alot of people were talking about haveing it 7 cubic feet and tuned too 33hz would that be a good setup for the box? thank you.

The link above wont work for me. Does anyone have the recommendations and where the options are explained.