SPL & SQ / Fabrication

hey guys i got a question for ya. im building a box for 4 15 fi ssd's and i was wondering if a box built at 15.5 cu ft. net and tuned to 32 hz with 200 sq in. of port. its going into a blazer. think this box will work? any info would help thanks.

I'm starting my first system with 4 of the rl-i8's and need a lil help on my box. it's not gonna be just one big box but 4 seperate ported boxes. each one will be about (acording to the program im using) 10" wide, 15" tall, and 9" deep. im having problems with the port though. the program said it should be 1/2" by 2" by 2" deep for a 35 hz. this sounds way small to me. is it? and does this idea seem good or is it too "over the top."

Do you guys think I can get 4 dcon 10s in a 36"w x 16"h x20"d ported

Well, I'm adding 2 more DP21"s to my Expedition in a month or two. I was planning on doing a clam wall at the B-pillars. But I also started thinking doing a diamond type enclosure would be pretty sweet too. So I'm looking for some opinions on what you think would be louder, first and foremost, and look better. Which ever design I go with will be at the B-pillars, between 35 and 40 cubes, tuned to 32hz. Please explain why you voted the way you did. I have never done either of these designs, so any tips are also appreciated. The subs.

This is going in an RX8. Looking for a fairly good ground pounder with the ability to upgrade to 4 SA8's in the near future. Not sure This design has enough port area. Don't do too many ported boxes and would like to make sure before I waste the time building. Will be powered by a Sundown 2000D. Link to pic of enclosure I had worked up.:

Im Helping a friend design a box he kinda wants a half wall. Two subs inside the cab ( no rear seat) and two in the trunk area. My idea is 3.5 cubic feet per sub about 55 cubic inches of port per sub. It will b one big box but inside it will be like each speaker has its own box and they all have their own port. So i suppose 14 cub ft internal after sub and port displacement and overall about 220 cub inches of port how does that sound any advice is appreciated. He has none of the equipment yet but he wants 4 cvr 15s and for power either two kicker kx1200.1 or one zx or kx 2500.1?

hey im putting 4 l5 15's into my van but was wondering iwhich way i would be louder, if i had 2000 watts going to all 4 so it would b 500 a piece or just do 2000 and only hook up two for 1000 watts a piece , in my spl class for this year i cant exceed 2000 watts

So I couldn't sleep last night and decided to start designing the box I want to build for my 4 SA-10s that im getting in next week. Thought I'd post up the pics.... Also, After discussing yesterday with a few of you and trying to decide how to do port area and everything with some aero ports, I decided on the (4) 4" aero ports.. But then after I designed it and everything I realized that the tuning you guys said was about 39hz.... and Sundown recommends 30-35hz for these subs.. 39hz was like the only tuning we could get to work in order to get enough port area for my setup.. So I wanted to make sure before I buy everything and build this,.. Are the subs going to do/sound …

4 Sundown Sa 15 W 36 In H 20 In D 40 In Port Width 20 In Port Height 9 In Tuned 32hz Sub Up Port Back Max Dimensions Are H 33 D 54 W 38 It's Going Into A Scion Xb 2008. This Is My First Shot At Designing a Box So Any Helpful Input Will Be Appreciated.

Shizzzon as always if anyone would llike to chime in feel free. Shizzzon has been such a big help to me I wanted to ask him in particular about something I know I have faith in him for. My Port Love everyones ideas though so again chime away! 4 Shizzzzle I've been trying to send you a message w/ my phone #s and invite to for you and whomever to stay at mine and Kelly's home. For some reason I'm not able to send. In the attempted PM i got carried away w/ the following so I'm just making it a topic so I don't lose it. (computer has been acting up maybe on last leg) This would be the help I need from you for my "big boy" system! My previous favorite enclosure was…

considering doing a box with aero's wanna tune it lower also around 30 hz right now its in 3.4-3.5 cube at 34 hz on 3k rms to get the tune i want and my depth issues guided me here, i hear you need to have roughly the diameter of the pipe distance from flare to back of box for it to be right? so final figure would be 4.25 cubes at 30 hz with 1 6" Aero at 16.5" for that tuning and thats from flare to flare. Should i just go to 2 3" aero's or what do i do hear, because i will be going 16.5"+6"+1.5" for the MDF im too close to the rear hatch, it would be like 3-5" from it

I have sa15s the box is gonna be around 7-7.5 cuft box. Would tuning it at 40hz be too high for a daily driver? I want it to be hella loud!

i have 3 300amp breakers now... im popin one of them somtimes.. the onw between my amp and my rear cells,.. i know that once thay pop thay pop easyer... i bought a new one on ebay... i was stoned and bought another 300 amp!..... so now im looking for a 350 amp or a 400 amp CIRCUIT BREAKER... any ideas?

Would it be better to but 45's here or would it be bad? The pics will explain it better. Option A. Option B. There are two, one on each side of the port. The box is 48" wide and the port is at the bottom in the middle, and is 30" wide. There is a 45 on the back opposite of these.

hey guys i have a 2006 toyota tundra access cab. currently my sub is in a 2.5cuft box tuned around 32hz. its much too small. it is being powered by a percision power black ice bk1300.1d. and i have been fiddling around on sketch up trying to make a box to fit nice and tight up against my seat in the back passenger side. the box will be roughly 4 cuft with 2 4" pvc ports. will this be enough port area for my sub? the box i have it in now has much too small of a port. i am planning to tune to around 30hz this time. sub will be roughly in the center of the two front seats firing foward, with the ports facing the drivers side. there will be one seat still usable in the rear b…

Not so good with building these kind of boxes never seem to e the dims right. any ideas or designs that have actually worked. so lets here some ideas or formulas"

Im gonna be getting my 15" custom juggernaut back from PSI soon and i was gonna build a reg ported box 4.5 cu 35 hz first, but i am kinda dabbling with the idea of a 4th order. ive tried looking up some info but so far i just have spent alot of time and still dont know that much about them. any opinions, advice or tips is appreciated. im mostly looking to figure out what the method is on figuring out how many cubes you need inside the sealed area, and how much you need in the ported area and what you port it to, and why you port it at that hz. im planning on building multiple boxes for this sub to figure out what i like best

So, my daughters MECA Power Wheel got a broken port... So I decided to rebuild... The small sealed enclosure was practically free airing so I was looking at making a loading wall, but I don't know how to tune for just a loading wall which got confusing because it started coming out at a 6th order... So I started looking into 4th order, sealed one half, ported other. plenty of loading surface, as well as the output for the port to under the dash for the kick score. I have it as .35ft^3 sealed side (its a single 8 sealed enclosure is .25-.5ft^3) and ported side .68ft^3 with 2 2" aeros 10" long at 45hz. still fits on the back of the power wheels, and tuning a little higher f…

Currently I have four Kicker Comp 15s doing a pretty good #, really pounding for a street beater on such a low budget. In the vehicle, we have room for a 4th Order Bandpass. I used a calculator from www.carstereo.com to design one but doubt its accuracy. Can anyone aid me in designing a 4th order bandpass, or link me to a site with theory/equations for one? Simple calculators are hard to trust w/o knowing the math behind them!!

What do you guys think of this design? The huge ported section will be roughly 50 width, 36 Height, and 36 length all the way up to the back of my front seats. The sealed section in the trunk will have roughly 1.5-2 cubes per sub with the ported having over 30 cubes hopefully Give me your opinions of this design please Thanks http://img573.imageshack.us/img573/9628/boxdesign3.png http://img341.imageshack.us/img341/570/boxdesign.png http://img29.imageshack.us/img29/7765/boxdesign2.png does that make sense?

I have a 12" fi Q that is fully loaded, except there is no extra spider option, and no high qts option. I also have a Sundown SCV-2000d, big 3, XS Power d3400, and an XS Power XP950 in the trunk for power. I figure after all losses/drops I should be getting around 1700w rms of clean power to the sub. For mide I have 2x 6.5" Sundown Neo Pro V2's and some Image Dynamics CTX65SC's for components up front. Hopefully having some dedicated mid bass drivers will work well with a bandpass enclosure, so that I can tune that to hit the low notes and roll off right into where the Neo Pro's will take over. Lastly, It is being installed in a 2013 Subaru WRX. After some deliberation I…

I wanna know if I could build a 4th order bandpass box for 4 12" subs in the trunk of my cavalier? I have a Soundstream Rubicon 2500D amp and a Kinetic1200 under the hood and a 2400 in the trunk. Thought about something sort of like this but, not too sure it would work with being such a small trunk...Just need some help tryin to figure out if I should do it or not. http://sketchup.google.com/3dwarehouse/details?mid=5362d8048075cdd16b752e7529d36aed[/media]

i have a 96 s10 reg cab and in order to have a bigger system im forced to build a blow-thru. ive decided that my best option is to do a 4th order bandpass with the port coming through the back of my cab. i like the idea of having a single octo-port (just because i think they look effin b-a). ive done read just about everything you can find on the net and also talked to a few guys who have them....but everyone says something different....my question is how do you tune these things??? "golden ratio/theory"??? i plan on using 4 Lanzar Max Pro 15's (yes i know what your thinking) but they dont need a ton of space and power

I had a 4th order bandpass box designed for me, but he didn't give me an output graph or tuning frequency or anything else. So before I build the box, I'd like to know what the output graph looks like (if there are any high/low peaks/dips in the curve at certain frequencies). How can I figure out what the 'range' of the box/sub is? I'm not sure how to ask this, but I'd like to know the frequency band width. Whats the lowest the sub should play and the highest the sub should play. So I know where to set my subsonic//lowpass filters. Can anyone help me? Let me know what measurements you might need or just tell me how I can calculate it.

ok lets try this again because the designer still wanted to get in on this convo. I may not be the all knowing when it comes to Car Audio but i am a man with 2 degrees. I don't understand that how after you said all those lovely things about the designer and builder of the 4th order in question. How can you still say it sounds bad after not hearing it. I didn't lock the thread. Wouldn't have posted in it again if it was locked. As for my statement, I'll repeat it and stand by it. It is not an opinion that in particular that 4th order BP was not the best use of space, it is not an opinion that the output of that box does not have a smooth response in the frequency doma…