Fi Technical

Hey guys, i need help with a box design and unfortunately im strapped on time. If someone could help me out with some plans with these specs i would be greatly in debt. Box is for 2 12's ( .15 displacement per) tuned to 32hz - slot port centered on box double baffle 3.6 cubic ft total 36w x 16h x ??d I need the width and height to stay at 36 and 16. I tried using subwoofertools.com but the program wouldn't give me 36x16x?? but rather 32.5 x 16 x 23.5 or something. Once again if someone could help it would be greatly appreciated.

Will a 18" BTL handle 2 Memphis 4kw for Street Beat or burps. Also when building for SPL only is it better to use a small or large box. Can you also let me know what a recone costs for a BTL a 15" & an 18".

im fixing to purchase an o-scope to make sure my q's arent recieving any square waves. im metering the gain with my dmm but i want to be double sure. what kind of o-scope do i need? as in mhz and all that can someone point me in the right direction? thanks

Scott, I just want to start off by saying thanks for the fast delivery of the recone for my sub it made it here in time for me to take 1st at usaci show in Omaha with a 141.7. But, now I need to build a competition box tuned to around 43-48Hz since my car is tuned to 45Hz. any help with this would be great. My email is [email protected] for box deminsions and print off sheet. Thanks again for all of your help.

I was banging it at mid level volume (25 out 0f 60) for about an hour. Its getting 1200 watts rms from a 9.1 at 1 ohm, my gains must be set a little to high. I bought an old bass mechanic cd from circuit city yesterday, this morning I put it in just before I left my home, by the time I made it to work I was at the end of the cd and was listening to test tones, they went from 20hz all the way to 99hz, I only listened up to 35hz before I cut it off. I felt my amp before leaving the vehicle, it too was warm, I have never been able to get my 9.1 warm before. I then checked the BL in the trunk, the dust cap and surround were warm as well. I never once smelled any coil or glue …

Hey. I am doing a 5.5 ported box in a hatch of my 1995 camaro, off of a hifonics 20006D, What Sub(s) would you recommend? I want the sub to hit the lows and be pretty loud. I was thinking a 18" BL. Tuned to 36-37. Or maybe 2 15" SSDs? Not sure if these subs will be suffocating in the box that is 5.5 without displacements.

Looking to build new system. Planing on using a Memphis 2500 watt amp to each sub. This system will be mostly for SPL but also some daily listening. Will be using 10" or 12" subs. Just wondering which Fi sub would work best. Will start with 2 subs but move to 3 at a later time and maybe a Memphis Mojo 4kw to each also.

Ordered under Jeffrey Squier Bought the Q back in Janurary. I have been told that the spider is blown. This is my only resort of maybe getting some info on what to do to send it back to you all to be re-coned. I know that you all are a busy group, but please respond, as I have a nice paperweight on my hands.

Since my second Q is getting here tomorrow, I thought why dont I start working on the box like tomorrow or Saturday since I have nothing better to do on those days.. So I was hoping that there is someone around here that is an expert at box designs and cutout measurements could help me on making a design and measurements then I'll build it... The box is going to be for 2 15 inch Fi Q's.. Ported.. I would like the subs firing upwards and port firing towards the hatch.. Also, I want it to be tuned at 32hz.. It will be going in my explorer.. so the max dimensions I got: Height: 16 1/2 inches Length: 41 1/2 inches Width: This wont matter, I got plenty of room, but would li…

this is a test box i built. okay it's 1.1cu. ft. and i had it tuned from 32-36-40-48. after trying all of these, the other box i have in the car is louder. do i not have enough port or wrong place? i don't know. at 32 hz the test box has a smoother transition. all the rest of the tunings were okay, not great. anyways my question is what size box would you guys recommend for spl and at what tuning? my car peaks at 43 hz in the old box. maybe i was expecting too much but after hearing the bl in my existing box i got all excited. just wanna try and make an spl box the one i have now is a pretty good dd. thank you in advance to everyone. btw it's a 3" port and a 1…

So i am using my 15" Q for a home theater sub, 12cuft tuned to ~12hz or so. It is a monster on only 1000 watts. Through reading allot on subs and linear tech im wondering how the Q's coil is setup, underhung/overhung, any linear tech, shorting ring, and if there is anything special about it? Im more or less wanting to compare what i am listening to and what its tech is compared to what some people are using. I have to say though that the Q in my enclosure is a pretty amazing experience. just need to get maybe another 500 watts to it and some way of keeping my house's voltage stable. thanks!

i've sent a couple of emails but have gotten no reply so i figured i'd just make a thread about it. I'm going to need a recone for a loaded universal btl 12. also i've heard a little bit about tinsel slap problems. If subsonics are kept under control is it really a problem? Any possible performance difference between the d2 vs d1, amplification held aside? If not then d1 is my preference.

I'm looking at upgrading my subs in the near future to a 15" Q. Could someone give me an idea on the outer box dimensions so I can see if a 15 will fit in my 1994 Mazda 626. looking for about the 4 cu. ft. net tuned to 30-32 Hz. I'm limited to about 17" high by about 30" wide. I assume with those dimensions I'll likely have to go with the sub facing up. Is there any potential problems with this? If it doesn't work out with the 15 I'll have to get a 12 instead.

scott ive been trying to email you about cutout sheet for box you designed me and i havent heard a from you so i guess ill try on here and this is the email you sent me with the box specs so it should be easy for you to help me out and its for the box with the sub up and port back thanks From: "Sales Fi Car Audio" <[email protected]> To: "jamal martells" <[email protected]> Subject: Re: box question Date: Sat, 9 Jun 2007 13:49:56 -0700 Im assuming it is for a 15" sub given that it is 3.5 cuft. From the dimension the only way to fit the sub is firing up. I will give you designs for both rear and up firing ports... you can choose which works best …

I havnt heard back from you yet, did the recone kits get sent out cause i really need them by the weekend, and you told me they would be here in time. If you can send me the tracking info please. Thanks: Les Rutherford

Building a wall for 2 x 18" BL's in my Ford Focus ZX4, as it stands now we've got 10.5 cubes per sub, my questions is how much port do i need? how much port surface area etc. etc. ????? Any help would be greatly appreciated. Thanks. Dan Soundmekanix SPL design Team

well ive had my btl in for a few months now, but now, i want something louder. I also want to free up some room in my backseat, just because my current box is HUGE back there. what im wanting to do is recone my 15" fully loaded to a 12", and build a better/stronger box for it. i plan in the future getting a second 20.1, strapping them and adding a couple of batteries. I really want to break 150 on music, would i have a possibilty with a set up like that? i know its all install dependent, but with a good install, could that be possible, without having a fart box?

hi guys. i was just wondering if anyone has a BTL18 in their trunk? i will be looking for a new or used car this weekend, and i want to be able to fit a decent sized box in the trunk. i really don't want to go with a hatchback, van or SUV right now i have a 2.8 cubic foot box with a fosgate t115d4 and its not loud enough for me. i will be ordering a 15 or 18 inch BTL18 before the end of the month. i want a 5 to 8 cubic foot enclosure to fit.

I haven't built it yet I am just exploring options and found a design I kind of like. 8 cu. ft. tuned to 34 hz with 101.25 square inches of port. The port opening will be 4.5 " wide and 21.5" long. The box dimensions are 33x24x27.5 overall. It will be a crx style box , and will go inside of the cab of a 2000 chevy silverado. I plan on pointing the port towards the driver's side and have the sub behind the passengers seat. Do these specs seem alright to everyone? Would a different direction with the ports yield better results? Does that tuning seem alright or should I go lower/ higher? I want SPL but also enjoy the low notes that a highly tuned box sometimes lack. If any…

I am interested in purchasing the BL 15 and I have a few questions. It says that the RMS for this model is 1000 watts. I noticed that steve meade has 4000 watts RMS to his BTL's. Does that mean that the BL series can take 2000 watts RMS and still function as a daily driver. How is this possible for steve meade when the speakers are rated at 2000 watts RMS or does he own an upgraded version?

ok im trying to figure out what to run for a build im about to start. if i had 4 18' ssd's w/ bp power and flatwind and 4 "stock" bl's in the same car, box, and tunning is there gonna be a major difference in loudness, sound quallity.....

First post guys, so please bear with me... I'm looking at a 12" Q for my sealed enclosure. Here's the thing, I've got an enclosure that's .88 cu.ft. I did the search and came up with what seems to be a optimum 1.2 to 1.3 cu. ft. Here's the question, how will this driver respond in the .88 sealed with 750w rms? Thanks guys.

I know the routine in making a sealed enclosure but have a few questions before I begin.... This is the first one I am making for my 15" Q and I am getting 3/4 mdf and using 1.5" on the front where the sub is mounted. I was planning on using liquid nails to glue the boards together and then screw them- should I then caulk around the inside after that? Also when doubling up the front baffle, should I just glue and screw two pieces of 3/4 mdf together and then attach to the rest of the box and cut my sub hole in both? Any other tips, or things I forgot before I start building? Thanks guys for the help!

Hey guys, I m back.. I was here like a month or two ago.. I was collecting the informations I need for my new set up.. Then finally, I got the set up done.. I have a 15" Fi Q D2, Ported box tuned at 26hz, JBL GTO 1201.1 II amplifier.. PICS: BUT I have a problem here.. I grabbed a deal for the box and sub combo when I needed a Q that is D1 not D2.. But the sub I got is D2.. So I am stuck with 4 ohm load on the sub since JBL amp is 2 ohm or 4 ohm stable only.. It cannot go lower than 2 ohm.. At 4 ohm(which it is running on right now) load, it is only 787 watts RMS.. If it is at 2 ohm load, it would be 1200 watts rms.. It already sounds sweet at 787 watts rms.. i can…

I was wondering if the BTL or BL could be run in a sealed box. The Fi site doesnt have any dimensions for sealed boxes. If they cant be used in a sealed box, why? Is it because they just wouldnt sound good? Just wondering. Thanks guys