Fi Technical

What is the difference between Running my SSD 900RMS@2ohms or Running my SSD 900RMS@1ohm. I think it has something to do with efficiency?

What is the cabinet size for a Fi SSD 10 high QTS version

so i want to keep as much of my trunk as possible, so what im woundering is. My old box was like a perfect square, if the new box is the same cubic feet, but more rectangle than square so it will stay in the rear of my trunk. How will that effect the sound?

So I'm fixin to build a box to house an 18. I don't, however, know how to calculate my port size or to tune it. My maximum external dimensions are 35"W 30"D 17"H. I want the sub to face the ceiling of my vehicle. I don't know if thats gonna effect the port location or not. If someone could kindly walk me through the process of designing and sizing the port for my box, I'd be eternally greatful and totally post a picture log of the build process. Thanks in advance.

Hey guys, Just wondering if you think I may have made a mistake with the 2 15's I am trying to squeeze into my car, I have a decent amount or room to play with... but do you think I should have went with 2 12's instead? Or do you think I should just throw the power at em and let it ride... My box will be around 8 cubes. My trunk is actually around 17-18 cubes, it's just that it has a tiny opening... do you think there will still be enough room for the air to move around in it... Thx Josh

Doing some box designs and wanted a little help on picking what hrtz to tune the box at. I read the post from Fi about tuning and it says anywhere beteween 30-37 hrtz. I will have around 8.5 cuft for each sub and wanted to hear some suggestions on tuning. The enclosure will have the ports facing twords the rear with the subs mounted on the top side of the enclosure. I listin to mostly rap music and want it to be loud as it can be. The subs will be pushed by 2 Alpine PDX 1000.1's for now, but down the road will be pushed by 2 PDX's on each 18 1 on each voice coil at 2ohms for a total of 2000 watts to each sub. Thanks, this site has helped me alot so far, the best sit…

Alright, so i finally have all the pieces together for the btl. Alternator, battery, amp, wiring, ect. So now to this whole... building my own box thing. i would prefer around 32hz and 7.5-8 ft^3 before displacements for sub and bracing. I have 3/4 inch MDF (its actually 11/16ths). So one question is how do i brace it properly? And... i need box calculations for a standard Sub facing up, port facing back of vehicle design. I really like Mac n' Cheese's idea of coating the inside of the box with resin, i might do that. so 7.5-8 cubic feet, 32hz, and the dimensions i have to work with in the back of my explorer are 44.5" wide, 25" tall, 22" deep. Maybe 30" tall if it make…

I cant decide wether to go sealed or ported with my 15" Q...I listen to mostly rap and want good sq bass but at the same time so good loud hard hitting bass...whats your guys vote?

Just yesterday listening to my system, and my sub went out. I checked all the wiring and nothing looks loose. And I don't think I blew it because there was no smoke when it went out. Is there an easy way to tell if it's blown or not? Or if anyone might know what is wrong here, please let me know. The sub is a 12" fully loaded BTL that I bought this summer. Any answers or suggestions are greatly appreciated. And if there's anything else that you need to know, feel free to ask. Thank you.

I currently have a fi btl 15 fully loaded and i planed on using knu konceptz 8 gauge speaker wire but when i tried to wire the sub up the wires were too big haha...so is there anyway i can make the wires fit ive looked at banana clips and wire reducers but i dont know what to use and if it will distort or loose power

Guys i am fully aware that the flatwind and the coppercoils are two options you can not get together... My question is why can they not be done together (i am trying to learn all i can about the build of these subs for sheer knowledge) ? I was guessing that scott hasn't found the right coil for the flatwind to get a favorable response to have both copper and flatwind.... And if there is any great advantages to having both, WILL they eventually be a way to get both options? And if you guys were to find a way to incorporate both will the Q later have an option for the copper coil (I suspect the Q has a flatwind on it, thus no option for a copper coil)?

Was going to order a couple 2 ohm recones for my SSD's but now there is the basket option of yes or no. Didn't know what this meant. Can someone tell me please?? Thanks!

Just would like some info on how to tune my box correctly. I see these "port calculators" all over the Internet and wonder if they're even reliable.. I'm looking on making a slot port about 12.5"high x 4"wide. The dimensions of the box are 35" wide, 14" high, 20" depth. (outside dimensions). Thanks in advance

Hey everyone. I am a new member but have been reading a lot of threads here for a while. I recently purchased a 12'' SSD with the copper coil option for my 03 S-10 ext cab. I plan on throwing the recommended RMS or more at it. I am now struggling to figure out what type of enclosure to build for it. I have read good things about sealed and ported for this subwoofer. My goal is to have a good sounding setup that has the potential to be loud if I felt the need. I want to build a ported enclosure but am afraid of port noise seeing the enclosure is in the cab with me. I can build a sealed enclosure also pending peoples thoughts on this. If anyone with knowledge on desig…

Hi my name is michael, I am new here and figured this would be best place to get help. I have 2012 fusion, I want to add these 15s I understand the box will have to be built in the trunk and will pretty much take it all up. I will be putting the batteries in the spare tire well. I will be running DC power 270Xp. Min of 2 runs pos/ negative 0 gauge from front to rear and probley the NS-1 amp. I have around 45 inches in length, 18 High, and 25 deep. I have been doing some research and it looks possible and many cars have 2 15s but just trying to get others opinions. I know it gonna be hard but I figured might as well do it right the first time. Thank you for taking time to…

I just read about this sub at audiojunkies. I've got a pair of AA Atlases running free air in my little creampuff, a 94 Olds Cutlass Cierra. I'm thinking of replacing them with these. Any thoughts? I'm running 150w to each of the Atlases, I'll be doing the same to these. http://www.audiojunkies.com/blog/866#continued Thanks

I just got a 12 Q D2 with BP power hooked up with a JL 500/1. in a sealed 1.5(20*13*15.5) after sub displacement. is the amp to little for the sub? i set the amp to JL specs. and then i get clipping. i've used the same amp on others subs and get better sound and more power out of it. but with ported boxes using the same JL specs. how should i set it with a sealed box?

I have 1.0 cubic feet before displacement and it is a sealed box. I am wondering will I be able to get a 12" in there with adding polyfill and make it sound good or should I stick with the 10". I will have a sundown sae1000d powering either one.

Hello I have a ssd12+bp running off a Alphasonic 1200da at 4ohms. Rms is 1200 at 4 ohms BUT my electrical system is stock so with around 50-70 amps at 12.5-14 volt I believe Im only getting 550-700 watts to my sub. The 12 is in a slotported box with 1.6cuft tuned to 34 htz. I built the box for 2-12 so they each have their own seperate enclosure, but I can not see another SSD 12 in the near future cuase times are tuff. My question is this- If I build another box for my 1-12 at say 2.3cuft with a slotport tuned to 32 htz, what do you guys believe the difference would be? more SPL? I really would like it to BOOM harder, louder, higher spl. Im not into SQ so if that goes down…

Does anyone have a contact number for them?

I want it to be on the bigger side so it has better output. Anyone got a layout?

Ok, so i have figured out what i am going to get. 1 fi btl 18 and ma audio HK4000D with pioneer premier DEH-P980BT deck. I need some help building a box, just need a very simple one I have a dodge charger and the dimensions we have to work with are 31w x 14 1/3h x 30depth and MDF 1inch since the height is only 14 1/3 i am going to have to slant it, can someone help me with a drawing or something, like where the top panel needs to slant in order to have enought room to fit the sub please tell me what you think and if you have any advice please tell me. Thanks, Madison

What's the best way to solder the tinsel leads onto the terminals with these new recones that have the leads coming out of the spiders. There are 4 lead wires for each positive and each negative. I think its obvious I won't be able to fit them through the ring on the terminal, so how should they be soldered? Should some slack be left?

So i got my 15Qd2, and it seems to be running pretty warm. No smoke or anything, just that when i get home from banging on it a bit it feels a little hot. Just got it two weeks ago so not sure if it's still just from breaking in, which i'm thinking not, or maybe from low voltage?? It's running off of a fosgate p1000-1bd and the gain is just over half and under 3/4. My lights do dim a lot when it hits. There is a little smell, but smells more like breaking in smell, not vc burning smell, hence no smoke and when i took it out a few days ago vc still looked brand new. Basically, any thoughts on getting the sub to run cooler?? I'm thinking this could become an issue if p…

Hey, just wondering if anybody has had good results with an 18" SSD in a sealed box?