SPL & SQ / Fabrication

Alright well I finally have a new box design for my level 5 15". I just need some help with those of you who have built boxes in very tight situations. I have about an inch on the left and right side to spare and a few inches on top. I cannot build it outside and then toss the box in because my trunk space is too small. Rotating it will be difficult as well.. I have read on here people doing very big boxes in small areas inside their car. Pictures will be posted soon in my build log as well!

Gains will be set low (to start off, i realize hifonics isn't top of the line, but it'll do the job well even if it is overrated).. so any suggestions on a good wiring kit to buy?

Ok, here is are 3 chioces of a mock-up for the install. I was able to raise my air tanks up high, and now I can fit a box underneath. Here are the 3 possible ways to mount the amps. None of these ways will they actually be attached to the box. I will weld some aluminum and stand them off a 0.25" or so. Mounting the amps on top, I like the most, but one amp is slightly shorter than the other... Mounting the amps on either side, and the RL-p in the middle..though, I dont like the M's facing opposite of each other.. Mounting the amps on one side, and the RL-p on the other... Taking a vote..without a poll I guess.. Got in all my wiring today, so just waiting on the soun…

Wassup fellas I am wondering if I tune my port to 33 hz could I change the tuning of it without switching out the port? Like adding something? I would like to keep it at 33 hz when doing rap demos and daily bumping but then when I use it for work I listen to rock cause of my boss cause he hates rap so tune around 38 hz or maybe a tad higher. I have an hdc3 18 and 8 cubes or so to build.

If i where planning on useing external ports for my SPL set up (probably a pair of 6") to decrease cancelation and turbulance would it still be a good idea toconjure up some type of brace for the port? i would assume so but im not 100% sure. Keep in mind i want to easily be able to change the length of the port not only for trial and error testing to get the highest score but also so i can give it a daily tuning for the ride too and from the competitions and so i dont have to lug the Ava out of and into my truck every other weekend.

So i broke the latch on both of my back windows and plan on sealing them up. not the rear the third row windows. i bought some 3m window weld. Hoping that will hold it. since its 28$ a tube. Link any suggestions?

i kno this is a stupid question but whats the difference in 1/2" mdf and 3/4" mdf?is there a big difference in sound?

So i made a 4th order bandPass for 2 obsidian 12s out of birch. I started sanding the enclosure and filled it all the screw holes sanded all those spots with 60/120/220 grit sand paper everythings smooth(so i thought) i started painting the enclosure with kryole dual primer and paint(spray can) i thought it would be good to use that lol well im pretty stupid to think that was gonna work great. The corners are very dull along wIth the edges that are sanded and the top and sides are super shiny and it looks like shit. Whats a good paint to use to paint birch with and have it turn out super glossy. My goal is to have it very glossy and not be able to see with the edges meet …

So the time has come to finally make my box as work has slowed down and my carpenter (father) has some time to help me get a enclosure made for my pair of RE SX 15's. My major dilemma here is that the opening for the trunk limits the size of the box to be rather small compared to the trunk size unless i do one of two things... Option 1, Build the box in 2 halves then screw together inside the vehicle. Other then volume taken up for the small 2 inch border around both halfs of the box i plan to connect them with, what other problems could the pose for the sound of the box? I'm able to get like 12 cubes into this trunk if i am able two to part this box... Option 2, Build th…

i've decided to give building a box myself a whirl but... i realized i really have no idea what i'm doing maybe someone can help me out with the plans. i'm going to be using 3/4 mdf measurements. width1 = 15 width2 = 10 length = 37 height = 16 sub displacement = .48ft^3 port = 3.5in^2 tuning = 30 hz help me for an orion h2 15.2 www.orioncaraudio.com

I have a Tapco J2500 pro amp in my HT (playing an IDMAX 12) and I'm currently running each channel to each voice coil (so that should be about 750wrms to each coil) the signal is mono. The wires I'm using right now are 25ft long and 14 ga. Is this too small of gauge for this power and length My run only needs to be about 15 ft long, Should I 1. Keep the current set up and not worry 2. Cut the 14 gauges to the smallest length possible given the position of my amp and sub 3. Buy larger cable and still run separate wires to each coil 4. Bridge the amp and run the 4ohm coils in series and use make speaker wire so to speak out of 8ga power cable 5. something I haven't thought…

who let Joe in? I SAID WHO LET JOE IN?!?! YOU KNOW, Joe from CIA Engineering? Why you guys chasing all my sponsors down and making come to my hiding place? Hope you enjoy your stay here Joe. Might not be the biggest forum around, but the knowledge here and the people wanting to learn is strong here. Shane

im lookin to start a new build and try doing a wall. i know i shouldnt be doing this myself but the only way to learn it to ask a ton of questions and do it yourself. im not sure on the best/proper way to safely secure a wall. the walls gonna be for 2 psi platform 3s which arent too light. i just dont want the wall crushing me if i ever get into an accident. thanks.

alright so I will start building a sub box pretty soon but I have an issue, there is a metal brace on the floor of my car going from one side to the other. can I work around it? or does the box have to be flat one all sides?

I'm looking into building a new box and was wondering if there were any suggestions on the port's location. Its an extended cab truck and the subs and port will be upfiring with subs inverted. When competing it will most likely be USACI outlaw scoring with drivers door open. Would it be better to put the port on the passenger side, driver side, or center of the box?

I KNOW THIS DOESNT HAVE ANYTHING TO DO WITH THIS FORUM BUT PLEASE HERE ME OUT AND ANSWER THIS!!! I'm holding off on the 4 BTL's just for now until I get my money right but for now I want to know if this is a good setup? I plan on buying 5 of these (To Save Space) http://www.sonicelectronix.com/item_3835_Kicker+05C84.html This amp for subs http://www.sonicelectronix.com/item_9551_H...+TXi+1008D.html The box is going to be custom made (To fit the trunk) (Ported) maybe tuned to 27 Hz.,is 27 Hz. loud or should I tune lower? And its going in a 2004 Chevy Aveo. Im going to parallel wire the 4 ohm subs to 2 ohms. For a educated guess do you think I'll be hitting @ leats 140db? I…

Ok, so i have the planned dimensions and i need help calculating the port and seeing if this box is ok? Two Alpine type r 12's will go into it facing towards the roof of the vehicle. Length (Depth) = 26" Width = 37" Height = 13" So what should the port calculate to? According to the re box calc. they say the port length is 34.75". Is this correct? I'm usin .75" MDF of course.

I'm really confussed on ported box tuning and sizes can anyone help me work out some measurements for my enclosure i have two ascendent audio havoc 18" subwoofers , and two Orion D5000 amps to run the subwoofers . The size of the space I have is 34high x 20" deep 53" wide which is just over 17cuft i'f I've worked it out ok I would like the box 16 cuft and tuned for the lows because want to create hair tricks . The design I would like so I can make into a wall build . Help

I have a recording studio and have folded horn pa subs and is the loudest and cleanest of all the pa designs. I was wondering if anyone has made a folded horn sub for a car (I've never seen one but maybe I'm ignorant) and the pros and cons. Thanks

I remember reading somewhere about the relationship between a box's port area and potential output. The reason i ask is i have been looking at the IXL drivers from Mach 5 and in order to tune low in such small boxes the port needs to be quite large in order to avoid port noise. I was looking at a 2cf box with a fairly large port (roughly 50 inches) my question is will such a large port casue a loss in output? i was looking at tuning at 30Hz for a daily setup that would hammer out the lows. Is there a general rule of thumb regarding port size compaired with box volume? Could someone point me in the right direction (i haved tried to search) I was hoping some of the experie…

How does this look for a box plan. I am looking at going ahead and buying a 21in DP since I have plenty of airspace to work with. I also wanted as much cone area as possible that would be ok powered by my Saz-1500v.2. This would replace the rear seats in my 07 F250 and would be at window line. Goal is to hammer the lows, get loud as piss and sound good doing it. Will this work or should I change anything. Sub / Port will be facing forward. Around 10cu tuned at 30hz I got no responses in the IA section so it may be better suited here.

Well, i didnt think this was going to end up happening but i actually saw an Fi BTL N2 18" For $400 in my city. I was previously going to get a 15" Fi Q or BL which was going to cost me $400 shipped anyways so i cant give up this opportunity. Now in the quest for less trunk rattle, i wanted to fire my subwoofers forward into the cabin, BUT i dont have foldable seats. OhJay gave me a good idea. Use external aeroports that go through the rear deck where the 6x9 speakers go. I thought it was a great idea, something a bit different. Now i was wondering if any of you could make it happen. Iv got probably 19 inches maximum of height, probably about 40 inches of width. I…

I have a box in my Mustang that's 2.5 ft^3 tuned to 32 Hz that's used fo my 12" Mag D2. If I just swtich out the Mag D2 with a 12" Fi Q, would the tuning still be 32 Hz, or am I missing something?

I would like to make a vented box similar to this with the top ledge on it. The pic attached is of my current box. The front of the box is to the right. I'd like to make a ported box in the same shape with two ports each pointing out of the top directly through my open 6x8 speaker holes in the deck.

If I hsve aeroports half internal half external does the volume of the external portion of the port count towards the internal volume of my box? Also would the surface area of the portion of the port within the box divided by 1728 by the ports displacement? Thanks in advance!