SPL & SQ / Fabrication

I have a 97' Thunderbird that Im doing now. I wanted either a pair of Fi BTL12s or Fi BL15s. I want the BL15s because I would save a lil money on power and can be used in other areas such as the build, elec system, etc..... But the enclosure size needed is kinda on the large size for my trunk. But I can fit them in there if I angle the baffle and use 2-6" aero ports. My real question is I was reading on another forum that a guy with a mustang (which is basically the same trunk as mine) had success with his subs facing forward and his aeros on the side. He said that subs back/port side was the loudest on the meter but subs forward/port side was the loudest to ear. Has anyb…

I been going back and forth about taking my rear seats out my crew cab silverado.The idea that i have if i remove the seats completely, is to build a enclosure/amp rack that rear passengers can still sit on and still be comfortable. I was thinking about covering both in some type foam and vinyl...have this been done before and would it work?

It's about 7.4 ft^3 with a 13x6.5" port. Two 12" type r's are going in and will be running at 1000wrms. EDIT: What would be best to tune this box at? I'm doing daily and want it to sound good, not just loud. EDIT 2: Listen to mainly rap.

Does anyone know what the tuning is of the dual X15 box sundown recomends? And how many cubic ft it is?

I have a Soundstream Reference 500sx rated at 500 watts in 1ohm & 2ohm, is there a difference in sound quality in the different load and what about subs, does it make a difference in sound quality if you have a dual 1ohm or a dual 4ohm sub wired at 2ohm load are there any differences in sound quality.

Ok whats the difference in one box tuned to 35hz with 2.5cuft and another box tuned to 35hz with 3cuft? also whats the best material to build a box out of?

I got JBL GTO 1514 single voice coil 4 ohms. 350WRMS, 15 inch. It came with manual and says Vbox 3.50 ft3 Fb 30.0Hz, so is this box tuned to 30hz ? Im thinking of making new box and i really need ideas how to improve my SPL. I want to try different box, something like this: At the moment i just have vented box with round pipe. but i want to make something like in the picture, so how can i calculate box size ?

I have read a lot on the subject, but I can't get a final answer. Like a lot of people in my country (we have small cars), I have limited space in my trunk, but still want to use a ported box. I've read that round ports can make me save space. But I don't understand how. The same rules should apply : 12-16 sq inch of port area per ch ft. What can I expect for a 3.5 cu ft box ? I would like to make a smaller box so that my amps can breathe Thanks

I plan on going with 3 -10's box will be 3.2cf after sub displacement will be using 2-3 6" external aero ports. Tuned to 32hz and running 2k. Subs in mind are sa's or skar 10's maybe even custom built 10's from splaudio. Box will be subs back port to the front.

Like title says guys i have these subs laying around i dont have dimensions as the car is my gfs and she would like to have some bass in there so instead of having them collect dust and her hatch looks small then might as well throw them in there so im looking for the box to be tuned to 32hz. Mainly listen to rap/hip hop and some light rock. Forgot what else to put in this been a while since i done this alright hope to hear from some knowledgeable people here

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

Im getting two Mach5 MAW-15's and I noticed that the qts was .32 I think. So I guess I will put them in a ported enclosure tuned to 32hz. Does that sound okay? How big should the box be for the two of them? around 6ft^3? Thanks ~MadroX

I am getting ready to make a box and need to know two things. I am building a box for a nightshade 12 and I got an aeroport. The box is going to be sub up port on the side 1) Can the port be inside like old times? The only reason I am asking is all I see nowadays with aeroports is crx style with ports out of box. Will I lose db's by putting port in instead of out? 2) If so how many cubes roughly would it take up? Port will be 15.5 inches long and its a 4 inch aeroport. I am trying to see what I need to make dimensions of box if port is in instead of out. I just want the best possible setup I can get for what equipment I have.

What is target vent match? what does the M/S stand for. and how do i know what numbers to chose?

well since i put in the 2 15" BL's on the sundown 3000d, i have NO windshield flex, a little roof flex which is no biggie, but the worst is the doors...the body panels are so thin and theres just a single support bar inside it, which flexs with it against the body panel. i put Great stuff foam and peel & seal. i know peel and seal isnt real deadener, but ive used it before and itll deaden sound for sure, maybe not as good but itll do the job. well it did hardly nothing. what would solve it is fill the whole door with expanding foam but that isnt an option, becuase i obviously need the windows to go up and down. any ideas? pics of my door panels should be in the wall t…

Hey, i currently have my box in about 1.6 cubes to low 30's, and Mike told me that 2cubes net at 34 would give me more output. I want to make sure i won't lose SQ, but i might give this a try. Will i gain much output with this change? Will i still have excellent SQ? I searched a ton on here and caraudio.com and read up on ports, square inches of port area, etc, and i used various calculators. I used the calc on maximacar.com, which is the best i have seen. The box dimensions are: 24x14.5x15 with a 4 inch by 11" port. The calculator takes into account woofer displacement and displacement of the port, and it comes out to 2.29gross, and 2.06 net. With the box being 1…

I am ready to finish my box this weekend for my BTL but have a few questions first. When I attach the baffle with the second piece, will the port tuning be changed at all? The top will not be flush after I add the second piece. Ive been looking in the build logs and wherever I can to see if this is what everybody else does. No luck so far. I know its only one side of the port but I want to get it right and not waste wood. Hopefully you guys understand what I am trying to say. I bought like a 2x2 stick for the bracing as it was cheaper than the closet poles. Can I shave off the corners so there isnt such a big edge or should I just go get closet poles? This wont be my fin…

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

im converting 4 3" round ports to 1 square port. i made a 4x7 square this just seems smaller then 4 3" round port... please help.

When doing a blowthrough setup in a pickup, will it really make a difference as to whether the truck is extended cab or standard?

Does anybody know who i can talk to about getting a 6th order bandpass design. Thanks!

hey whats up guys i have seen on the internet and on a few forums people using bedliner as a sound deadener does it work and has anyone had any good or bad experiences from it

so i used the re calculator and designed a new box for my r.f. power hx2 15. now what im wondering is when i add bracing will that affect my tuning? and how should i do the bracing?

Does anyone know where I can buy a copy of the USACI SQ disc with Hotel California? Or if someone can burn me a copy, I'd be willing to pay...of course.