Fi Technical

would anyone recommend running 2 hifonics brutus 1606d mono class amps to a 15" fi btl sub at 2ohms and connecting each voice coil separately if no. why not?

hello im building a sealed box for 2 q15 subs in my 1996 honda civic hatchback, i have a few questions? 1.... should i have each sub in seperate chambers or the same chamber? what is the pros and cons of doing either? 2.... what kind of difference in sound should there be between the largest recommended size encloser and somewhere inbetween? and whats the pros and cons of each? 3.... what kind of effect would there be having the subs down facing? Now for my front stage i want some more midbass, i have 2 different types of 6.5 inch woofers, infinity perfect 6.1 and older set of diamond audio hex series, i was thinking of putting the infinitys in the doors and getting some …

which is better 2 or 4-ohm for a SINGLE BTL on a kicker 2500.1

Ok guys i wanna get 2 Q series 12" subs my only problem is i dont what dimensions to use for a ported box and lso a sealed box. If any of you know please share im trying to either et cut out sheets for them or get the dimesions needed thank you. I was told to ask JBLCamry but i cant find him thanks ahead of time.

Hey guys! I am currently planning what i think (IMHO) what will be a pretty cool build but i have a few questions. Background: i currently have 1 fi Q12 loaded 2011 model running on a hifonics brutus 1700watt amp in a box that is too small so here is what im planning to do... The Plan: i would like to custom build a box to hold two fi q 12s. right now, its about 4 cuft ported and tuned to 32hz. i can provide tech specs if y'all need but i dont think its necessary for this post. The Question: I know fi came out with new models for 2012, and i know that running 2 different subs in the same box is a bad idea, so... will i have a problem running my 2011 q in a box with a 20…

I hope this is posted in right place.... Two questions: 1.) What is the RMS and peak wattage for a single 12" BL with the dual2, flatwind, daily and pchamfer options? The reason I am asking is because I seen on Fi 's site that it says 1000w/rms, but everyone is highly reccomending the sundown 1500d (which i am about to get.) So, why is that so if it is only rated for 1000watts? Does adding those options bring it up? I had a new custom box built by Sound Advice here in florida and the guy who was instlling it says to me that I will not notice too much of a difference in swithcing from a RF Punch 1000w/rms amp to a 1500 watt/rms amp ( in this case to the sundown 1500d)…

Anyone have custom box dimensions for two 15" ssd?

I was wondering is doesnt have a size recommended for the 15 ssd in a sealed box? Is there a reaosn for this? would they sound good in a sealed box? If anyone is running them in a sealed box how many cubic feet do u have them in? I cant run them in a ported box because the box would be to big to fit in my civic, any help would be appreciated, thanks

last wee end i was playing around with my system and i was play with a cd that went 1 to 100 cycles and sweep. i thnk that i might of found my sweet spot for my explorer around 46 to 48 hz. i was look at get 2 fi sdd 18 and i as wondering would 46hz to48 hz be to high to tune a box to?

not sure if this is the right spot to ask, but would 2 stock SSD's be ok on an AQ2200D?

Hey guys I got a 93 Grand Caravan and two Fi Q 18's With BP packages commin hopefully next week Im finalizing some ideas on a box and wanted some input. It gonna be subs firing up port along bottom out back. Im aiming for S.Q.L, i figure it will be loud regardless I'm not trying to put up huge numbers i want it to be very deep and clear thats all So im thinking Height = 26.5" Width = 47" Depth = 39" All in 3/4"MDF / im doubling the top sheet where the woofers are going. According to the RE Box calculator which i dont know how accurate it is it tells me Internal Displacement = 16.068 CuFt Before Sub (0.24CuFt x 2),minor Bracing( maybe .4CuFt) and After Port Displacement.…

OK, i am doing a system for a friend in a 1996 lincoln town car, the equipment i am getting is 2- 18" SSD's and will be powered off a Rockford Fosgate t1500-1bd . The problem is there are hydraulics in the car so i have very limited trunk space to work with. the measurements i have taken leave me with a max of 39" wide x 24.5"length x 14.5" tall . i think this comes out to be about 6.6 cu.ft. BEFORE any displacements . I know that this is WAY UNDER THE RECOMMENDATION, but i do not have any more room to spare. it will never be metered or compete it is just for show which is why he wants the 18's but even though it's, not going to compete it still has to be LOUD. I was…

how big of a box should i build for 2-12 btl? It will be powered by 2-40.1, i was thinking 4 cu at 35hz bad idea?

I have a 99 chevy tahoe that is bagged and I am looking to building a box inbetween the rear tubs. In the picture it shows my measurement but will this be enough space for 2-15' FI Q? Those are inches not feet, sorry.

Which would be louder? (Daily) 1. (2) fully loaded BL15s with about 3.2ft3 and 50sq" of port "each" tuned to 33Hz..... with a Hifonics Collosus (3200rms x 1@2ohm) so that would be about 1600rms each. or 2. (1) Fully loaded BTL18 with about 7ft3 and 120sq" of port tuned to 33Hz......pushed off of a Hifonics Collosus also. Going in a 2dr Explorer Sport

Like the title says can i put a bl in a sealed box. I know it recommends a ported box but why cant i put it in a sealed box? thanks ps. I already have them before when I had space for a nice size ported box.

Got 2-12" BTLs the old versions. Im trying to make up my mind on what to power them with between a AT-5000.1D or the AT-7000.1D. Its only going to be a daily blowthrough in a '97 Thunderbird. Which do u think I aught to go with? If I went with the 5K Id be saving needed space due to less batteries. If I went with the 7K its a $400 difference in price and Id have to get an extra rear battery on top of the ones I already plan to run.

I have a 3.5 cube box in my truck. i was wondering your thoughts. what would be louder? i can only mount the 12s down fire but i can mount the 10 into the cab? ant thought? thanks subs ran of a saz1500 for now

Is 2000 watts enough power for a Fi Q 18? Also I was wondering what would be better in my Dodge Ram Quad cab, its going to be inside the cab. 2 Fi Q 12's in a sealed box with 1.2 cubic ft per chamber or 1 Fi Q 18 in a sealed box with 5 cubic feet Thanks

i know fi doesn't make the xxx, but the model i have was designed by scott so I'm assuming this is the appropiate place. i searched archive.org -> reaudio.com and came up with no results for the 03 model. anyone still have the 03 xxx 12 t/s sheet by chance?

Could someone guide me on what size enclosure would be correct for the four of these big bad subs.They are 18 inch btl fully loaded. The customer would like a wall. The ruff dimensions are 35 inches tall, 45 inches wide, and @26 inches deep. Any help with the vent width,hieght,and length would be great.

hey hey i just got one of the re xxx 05 model and scott i emailed u about a few things such as specs and a 18" top end lol the 15 just dont make me happy so i wanna convert it to 18 anyone know how much this will cost? my buddy john Mulcahy told me to ask scoot cuz he was the one that designed these subs

Ok so on the 10, 15, and 18" bl the fs for both the d1 and d2 are the same, but on the 12 d1 is 35.2 and d2 is 39.8hz. I was wondering if that was a misprint or if someone knew the reason it was so different. I wanted a 12 d2 for daily but that fs seems kind of high especially when im used to the lows of my q...

Hey guys, I am planning on installing a 10in Fi Q subwoofer in my 2009 BMW 128i. I have wanted to do an install in this car for quite a while but limited trunk space has kept me away until I decided to build a custom fiberglass enclosure. I plan on using an AQ1200 D amp with the Q and with that being said I am concerned with the amount of power I will be drawing from the car to power the amp and sub. Any input would be greatly appreciated as to whether or not this might pose a problem in the long run with my battery or alternator. Thanks in advance.

with 2K RMS should i go with a BL or a BTL ??? i hear most people run their BTL at like 4k rms or 3k rms and i would rather run a BTL if it wont be vastly underpowered....i was reading on the forum and i think it was tejcurrent who ran 2 18" BTL's off of 2 hifonics 2K RMS amps and hit right below 151. so if i ran 2k to a Bl would it get just as loud as 2k on a BTL ?