SPL & SQ / Fabrication

Right now this is my setup and trying to see what class I would be in in db drag and others.. Subs:Mass destruction napalm 12"s x 2 Sub amp: Sound Stream xxx-6500d 1 ohms Front and Rear Speakers: PG zx-450 Also what DB range should I be looking at with this setup or DB class. I don't have a TL and have not tested it as I just got it all installed today.. I plan to go to my first comp here in the next month or so would just like to know what to expect.. Thanks

Hi, Just wanted to know if anyone is going to the DB Drag World Finals. We may be competing this year providing we hit our target SPL score which is 160db. We currently compete in Street C and are hitting 1580DB in the UK. Are there any street competitors here on the forum? What are you hitting at the moment and what do you hope to be hitting at the World Finals if you're attending?

I think I am moving from and L port to aero ports o I can get a little bit bigger box. I am trying to use this tool except I cant seem to get what I want. I am looking for about a 4.75 cuFt box (including displacement and bracing) with a depth no longer than 18 inches. I would like to get around 35hz for daily and 45-50 for competitions. Any suggestions? Help? The box is going to hopefully be 38w 17.5h and 18d which comes to a little more than 5cuFt and shuold be around 4.75 cuFt with displacement

Looking to get a decent prefab until I have time to build a box. Anyone have any reccomendations?

Alright I am trying to figure out a design for my car. Box is for 2 15" Nightshades, with tons of power, Jacob said I only need 2.5 cubes per sub. Anyways my dimensions are 30" deep, 16" tall and 31" wide. Only way really to fit this is if I do subs up. Now I wanted to do external aero ports blowing right into the car, but that won't fit. So now I am thinking A. aero ports blowing in but internal, b. aero ports blowing to the side, but internal, c. regular port facing in, d. regular port to the side, e. regular port to the rear.

I need some input from some SQ guys. It has a factory nav so options would be to swap out the factory headunit with an aftermarket and good equalizers. Or just add equalizers to the factory unit. All highs will be mounted in factory locations. Two eight inch subs will be molded where the back seats are located. The product list includes the following: two pairs Focal K2 power 100 KRS 4 inch components two Focal Utopia 21 Wx 8 inch woofers One Audison VRX 4.300 One Audison VRX 1.500 What would you consider the best way to go, money not being an issue.

I was just wondering if anyone can design a box for my fi q 12 that will get low and loud. . . its for a blow through in a single cab chevy old body style and max deminsions are 48 width 17 high and 70 long. . . i just want to get something the will sound like more than one twelve back there till i get money to actually by more ill give 10 dollars pay pal for whoever does this. . . Also i heard 6th order was the way to go cause i have a 4th order right now but i made it to big so i need someone with some sense to make me a 6th BP if possible if not so input please on best box design. Thanks Everyone Thanks, Teddy

Hi, i am looking for Street A class. My install is: Two amp EM-PHASER EA1800D, and two ALPINE SWR1042D. today i was build box 2.3f^3 (65l) and port at 45hz~ cross area 43.25in^2 (280cm^2) at 19.6in (50cm) long. so my result now is 147.4dB at 54hz. i have about 5kW at 0.5ohm linked amps (99.1V*51.7A). in Lithuanian street A class we can use one amp or two linked. so with open door result is 148.2. Somebody have an ideas how can I do more batter result?

Ok so i hear a lot "the bigger the box the better." Then some manufacturers recommend small boxes. So what is Correct? Also advantages to bigger ported boxes vs recommended size ported. Also what is a good tuning for ports, or what do you use?

I dont have time to try to make some plans.... i need some people to bust out some plans for me... this is for a comp in like a week need it soon guys. I need someone to build me something around 4.5cubes, maybe 5cubes tuned around 41-45hz... Whats going in it is.... 1 12" XXX powered by 1 RE 35.1. Need these plans by at least saturday. Help a brother out guys. Comp in a week and i need a box for Street A... wanna go to town lol. Heres the pic

lookin for some competitors who have some experience with 4th orders so i can get a glimpse on starting on my own testing efficiently

so i got a deal on a 91 240sx hatch its in perfect shape and runs great for $1000. my dads racin buddy has to many cars so hes hookin me up. it'll be a couple weeks b4 im able to get or see the car in person cause im waitin on my lawyer to call me and tell me to come get a check. so i've been googling and youtubin all day and i can only find 1 with a real system and its walled and im not wall reaady lol. so i come to you guys for help cause i know someone has or knows someone with a 240 and a system. i am wondering if i have space in the hatch area for a good 4cu ft. box after displacements kerf ported and tuned @ 33hz for my rf power hx2 15 powered by my saz1500. so im t…

hey im thinkin about puttin mirror inside my pox what would be the best way to get it attatched to the mdf with out it fallin off ? any suggestions

So, Ive been roaming around this forum to find some ideas on some box ideas for my 2 18" Fi Qs going in a 2000 Chevy Blazer. I listen to mostly rap that go into the low 30hz range and higher so yess this is my daily driver, so Ive designed some boxes of my own to see what you guys think about them. Hereeeee we go... Box Design 1: Separate chambers, 7.25 cu. ft. each after displacements @ 28hz - Subs forward, port forward Box Design 2: Separate chambers, 6.75 cu. ft. each after displacements @ 32hz (I knowww its kinda wicked design but oh well..) - Subs back, port forward Let me know what you guys think!! Thanks for looking :)

i wanna use a 6 inch port tube going up in my car from top of box and sub facing back cup holder whole in seat.I no wat size is optimal for the 10 xcon. But how long would the port have to be. I want to tune around 30. My space to use up (32L) (14H) (14D)

hey guys i'll follow mklett's pattern Vehicle : 2012 chevy cruze Location in the vehicle: trunk Space available (Length x Width x Height): 36x16x24 Subwoofer make and model: american bass xfl Subwoofer Size: 10 Number of Subwoofers: 2 or 3 Type of Port (Kerfed, Slot, Aero, etc.): slot or aero What type of music do you like?: mostly hip hop/rap but also rock Is your goal SPL or Everyday Music?: everyday Tuning Freq (Hz): 33-35 Volume :??? Questions: i'm trying to figure out the best possible orientation, size, port, and tuning for this car. i have a prefab ported box for 2 tens that i've had in the car for 2 weeks and have played it firing into car with it sealed off using…

So tomorrow I'm going to begin building my enclosure for 2 10" Skar IVX's. I'll just be running these as a temp. setup on a BRZ 1200.1 So onto my questions, is this optimum setup for my vehicle? (2001 honda accord) I've heard subs forward, port forward sounds louder to the listeners ear. Any truth behind this? Do I have enough port area? Should I be running subs up port forward? Or vice versa? Any input is greatly appreciated and thanks

Short notice. Saturday August 9th! Xtreme Sound Cruise-In and Competition. 1701 Queen City Avenue Cincinnati, Ohio Registration begins @12noon... I'll be there with my TL running the SPL portion. We'll be doing a StreetBeat style, and a headrest SPL style... as well as cheap re-runs... -Noah

Hi, I am getting ready to switch my system from my firebird to my truck, so I can sell the car.. It's going in a 99 s10 ext. cab xtreme.. I have 1 12" pioneer premier 3002d4, It's in a sealed box now, but I want to build a ported one for it. I will be using a precision power 1500 amp at 2 ohms, so roughly 1000 watts to it. I know how to do the wood work, but I am not near as good with calculations.lol. A good slot port box design wood help a lot, if anyone has the time. I would like it to be tuned to 34hz, with 1.7 cu without the sub. For room in the back of the truck I have 14 1/2"x18 1/2"x50".. I know thats more than enough, but thats the total space I have. Also, wh…

The title says it all. What are the risks running in Iso-Baric with these large excursion drivers?

need help with box for two crystal cmpx215 subs going in a 1999 ford explorer i have -41''w-18''t-20''d- will be running a orion 2100hcca on ea sub wood like to do ported at 28hz with 4''pvc let me no if you can help me out this is my daily ride----wood like it to bang hard

I'm going to build a box for a Fi Bl 15 that needs to fit against the angle of the seats in the cargo area of my 4runner. I want it to be ported and tuned to about 33-34 htz, but i'm having trouble finding out how to tune the box with the angled back on the box. I was wondering if anybody knows of any online programs or calculators that would tell me what size the port should be in the box to get it tuned right. Thanks for any help.

I am looking for someone who can design an enclosure for my trunk, max dimms are: H=14", W=38", D=38", Tuned to 30hz, Will be using 7000wrms+. Thanks.

Just got my new BTL 18 with all the goodies i wanted. now for the box. I plan on building it, but it will be the first one i build. Naturally i have a few questions that i would appreciate anyone taking the time to answer. I got alot of box building info from http://spkrbox1.spaces.live.com/ it seems to be legitimate information, i'm pretty sure i got the link from this site. but should the height of a box really be 1.4X the weight??? with my calculations, to get a box of 8.6 cubes BEFORE port and sub displacement, my box has the be 34 inches tall!!! (25X34X17.5) Ports brings me to my next question... are there are any performance differences in the type of port yo…

Since soon I will be installing a new sub in my truck (if i can ever get in contact with nick at IA) so while i have the 180lb behemoth out of my truck i figured I'd slap the leftover second skin somewhere. Im looking for the most quiet and the most potential SPL gain. My doors have 1 layre on the door skin and 1 1/2 on the door (didnt botehr putting a second layre over the window acess gap incase i ever need to acess the window) I have 2 on the back wall and that helped a LOT. It went from slapping my bedliner to maybe 1/2" of movement full tilt. I feel much more comfertable upping my SPL now that my back window isnt dancing...as much. The floor and firewall would proba…