Fi Technical

when people talk about tuning their ports to 33HZ and stuff is that based on the size of the port. Also could i run 2 12" SSD subs on a hifonics amp putttin out 1500RMS or should i get one that puts out 2000RMS.

The recommended box volume for a sealed enclosure is 4-8 cubic feet. Is there much of a difference in sound quality from 4-8? What exactly would be the benefits and disadvantages of having the volume be 4 cubic feet to 8? What about 5 6 7? So far what I could gather is there would be less low-end with the smaller box volume but the bass would be more detailed. Is this necessarily true? I have trued modeling the a box with WinISD but it didn't seem very useful to me. Also, would adding polyester fiberfill be useful in a larger volume box? Thanks!

my buddy has a 18 btl the old style 3 mag. we took it out one day and the tinsel has been slaping on the spider and put holes in them. the box its in is 4.5 cuft and tuned to 32hz with 1800watt on it. i glued some t-shirt on the spiders hoping it will help my main question is does the recone come like the new style with the tinsel under the spiders?

So I have a problem I am getting ready to make a ported box for my BTL 12 that is fully loaded. my big question is how do I tune my port to 32hz? the dimensions are 18w x 14h x 20d which comes out to be 2.20812 cubic feet. can I please get some help and advice I used a slot port calc but I guess the port length looked funny to me. Subwoofer Enclosure Calculators, Fraction to Decimal, Parallel, Series, Port Length and Volume Calculators Thank you

what is the difference between dual one or dual 2 ohm??? im looking to power up at btl 18 will 2 rockford 2500?

i am planning to go with the following sealed box for a Fi Q 15".. would there be any issues with the sub being mounted so close to the edges? theres only 0.1875in. of clearance on the top and bottom of the sub/edge

Big C Again, I Was Wondering Within The Parameters Of 13Hx16Wx12D Would Be A Good Match For A Q 12" In A Sealed Box? Input Greatly Appreciated. Amp Is A Sundown Audio SAE-1200D. Q Has BP Power.

If anyone could draw me up some designs for 1 15" bl send me a MSG and I'll give u measurements of my trunk. Website says 3-5 cubic foot.. So shuld I go 3 4 or 5? Wuld it fck with the sub if I went bigger or smaller then reccomended? I was lookin at sme pro boxes and this one is 3.87 Cft. Any1 reccomend pro boxes or would I be better off gettin one made?

I was wondering if someone could help me with box size/measurements. I have a Ford Explorer, I am going to be running a Sundown 3000d with this(Dual 1 BTL 18"). Space I have available, 40in Wide|30in High|75 deep(I don't use this area at all so it can be as big as it has to be).

I am going to use my 12" in a room setup for listening to music, it will be on a 500 watt dayton plate amp. what size sealed enclosure would you recommend, looking to keep it under 2 cubic feet.

Ive been looking for a "special" basket for my 05 15 XXX woofers for a while and i was wondering if FI would be able to help me out? I know all you guys use are the 12 spoke but i was wondering if you had anything different could make somethign different or knew where i could get something different? (other then the 12 spoke or the 6 spoke DD design) Im honestly in love with the last generation of the fosgate punch HX2 baskets but since its been some time since they sold that woofer i havent been able to pick any up.... So got anything for me scott?

I am looking for more SQ so i figured i would go sealed. But since i have a larger space, should i go ported? I want tight-punchy bass, I like feelin some of the high bass. My current box is huge and ported, so i think this would be the right change (sealed). Thanks

Guys I have purchased some ssd 15's from a guy and was wondering if I could send them in to get the bp power upgrade or if if that is something that has to be done at the time of the first build

Well, After serching the forum, I have found what is included in a recone kit, but now its time for the questions. I was woundering what a 18" Dual 2 ohm BTL recone with flatwind coil will cost. Also I have never done a recone before but I beleive I do have the logic, and patience to do one, but would I be better of just sending in the motor and basket for a recone? Would it cost the same for a recone kit as it would to send in the sub (Shipping not taken into consideration here)

What do yall think about this http://www.subwoofertools.com/forum/ported...mp;Fs=&CE=0 Would you make any changes or is it feasible.

im just wondering if it would be possible to have softparts assembled to work on a fosgate power hx2? i can take exact measurements if needed, but from what i can see so far it has a 4" dual 2 ohm coil and an 8" spider like i said though i can take better measurements of everything if you guys can help me out on this one. btw i have tried contacting RF direct and they stopped making softparts for this particular sub seeing as though its over 3 years old.] TIA chris

i have around 900wts at 2 ohms looking to do a single 15" ported box. listen to rap and classic rock. which would work best a Q or ssd wth copper vc.

Well i got a decent amount of money back on my taxes so its time for a new system. I have decided on a bl 15 dual 1 ohm and I just want to make sure i got this right. My enclosure is 3.5 cuft after all displacement tuned to 32hz using two 4" tube ports each 15" long. I also will be using a memphis 1500d (1500 watts at 2 ohms). Does all that sound good? Any advice on what options I should add to the sub when ordering? Thanks guys I appreciate it.

ok heres the deal im wanting to buy two 18's for my truck and want to know if the btl n2s will fit. I have an 01 ford f150 supercab which is just an extended cab 4x4.What i'm wanting to do is build a wall basically take the whole back seat out and build the enclosure in the truck.I am going to apply dynomax deadner and i have a pioneer avic z130 bt head unit and going to purchase two kicker zx 2500 amps and two yellow tops cause my trucks battery is almost dead anyway also going to get a bigger alt. or possibly two.Have already bought power acoustik mids and tweets.all going to be ran with 0 gauge.so basically i want the btls but dont know if they will fit because of the…

Hello all, I have a 1999 GMC Yukon that I use on weekends to travel to sporting clays shoots. This truck will never be used in a Audio competition just two semi deaf old guys(36 an 38) like to play it loud. The current system is: Subwoofers and speakers 1 JL 18w3 2 Jl 10w0s 4 Infinity 6.5s Amps Kenwood 9104D (powering the 18) Alpine MRP-M500 (powering the 10s) Alpine MRP-F300 (powering the 6.5s) Other Two batteries high output alternator "big 3" This "system" does okay but we are getting a little bored with it. I have a second Kenwood 9104d (900 watt rms at 2ohm limited to 900watt at 1ohm from what little research I have done these amps really do around 700 wa…

Just like the title says, I'm planning on getting an Fi Q12, dual 1 ohm with BP power. I was planning on running it off of this at 2 ohms. Will this power it properly? Also, will I need to do any electrical upgrades such as the big three upgrade or a red top battery under the hood? As of now, I'm running off of my stock alternator which puts out 120a and my stock battery. Thanks for the help, -schmizzle

It is 6.5 cufeet internally tuned to 30hz with 111 inches of port area. What is your guys thoughts on it? to much/to little port area? not enough room inside the box? just post what you think on it.

I Emailed Fi about a month ago about the reconed and i haven't heard anything about it. If u could let me no what is up

where can i find good box measures ((length width depth port)) for a single 12" btl. i dont have any experience in box building and i dont want to do guess work. can anybody have me with this.

alrighty fellas i've decided to go with a 18'' btl-n2 and my truck is a 2000 gmc sierra ext cab long bed. i know the rear seat is gonna be gone i am planning on pushing the 18 with a soundstream dtr3400 and a ported box tuned around 32 hz so if anyone can reccomend enclosure specs i beleive my dimensions with the back seat out are 54'' long , 34'' tall, 24'' deep. if any body can help me out i greatly appreaciate it