SPL & SQ / Fabrication

Hello, first of all please excuse my english, I am from Romania. I just received a fi Q 15 ( no options ) and I am trying to calculate my speaker enclosure. I want to go for sealed enclosure because I don't have much space in the trunk ( BMM e46 sedan ). Recommendations for fi q box is 2-2.6 cu ft. With my calculations I am about 2.5 but I want to be sure I calculate it right before I give the blueprints to the box builder This is my result, I am happy because it fits inside the trunk perfectly. I made a dummy box to see how it will fit inside the car. Wood is 1 inch thick.

Just trying to figure all of this out. One site says figure your tuning dependant on port length, others say by width and height of port (square inches of port area). So what's the verdict? I have 2 SSA Xcon 18's wanting them in a 6.5 cuft (each) box tuned at 31 hz. Also, what is the difference sound quality and SPL wise between having one large port or a seperate port for each sub?

http://www.termpro.com/asp/members2....&MemberID=9878 Some more info about the show Taken from bill Address The address listed in the link and in the previous posts is at my "shop" garage/ house right across the street from the n.tonawanda police station there is plenty of street parking ,this will be an outdoor show ,the garage will be open and the judging table will be just inside. there will be plenty of room for head to head competition in 2 lanes at the same time. Trophy's: We will have a trophy for loudest of show and certificates for all other competitors along with 2008 points for finals ALTHOUGH IF THIS SHOW CONTINUES TO GET BIGGER .......the location might …

Okay, so...I am going to start my build for two 15" fi bl's in the trunk of my 97 chysler sebring, I can not quite remember what specifications, but it will be about 7 to 8 cubic feet. I am not sure whether it would sound better with the port facing in side the cab or toward the opening of the trunk, the subs will be facing up, and about 30-32 hz. Any input would be appreciated Thank,

So Im building my box but am confused as hell. Ive read I need 12-14sq. in. of port per ^3 but the manufacturer insists on 40sq. in. x10" long @32hz. for a 6^3 net box for my 18. Its an Atomic APX. When I spoke with them they said dont listen to anybody build this exact. WTF?! Any idea why? Its rated at 5000rms. Would the larger port make it unload at low freq. with that much power and thats why they say what they say? Shouldnt it have massive port noise?! Im so confused. Someone please straighten me out on why they want it EXACTLY as they say and yet the port area doesnt make sense?

Ok guys, I'm gonna need some help with an enclosure. First, some background. I have a friend who everyone had him talked into buying the usual kicker stuff, but luckily I got to him in time. This will be his first setup. Anyways, I coached him through buying an AQ2200D (could have chosen a better amp, I know, but his budget was sort of limited and we didn't feel like going through the hassle of looking for used deals on others), an 18" DC Lv5, and all the other bits. Should all be getting here by the end of this week. Alright now to the enclosure: The vehicle is a 2005 Tahoe Z71 (captain chairs in the rear). Now I measured awhile back, but if I remembered right, it should…

I have a 99 Siverado 3 door. What I want to do is take back seat out and build a box for subs so they will be behind driver seat stacked on top of each other. Take back seat and get cut so I will still have a half seat back there. No one in my area wants to deal with it. Is this a good idea? I just want my trunk to be able to carry 3 people instead of just 2. Would a ported box still be okay on one side of truck?

what is a good primer for mdf boxes a link would be very helpful thanks

Okay. So I've got very limited trunk space. And a small-ish. Budget. I'm hoping for someone to help me with some sort of box design for an FI Q 10, in a ported box. Max dimensions being 30" Wide, 14" High, and 17" Deep. Already have an Amp picked out too that i'm gonna buy from a buddy for good.

i'm planning on running 2 orion hcca 12's and the box i'm planning on housing them in aimed at 30hz. it's dimensions are 39" wide, 14.5" in height, and 32" in depth. my port measures 13" wide, 8" in height, and 27 3/4" in depth. will these measurements yeild my 30hz goal. i'm not that good with measuring volume and everything so a little assistance will be greatly appreciated.

Hello, I have a 15" Icon sub in a (about) 4 ft3 enclosure, tuned to 30something. The port is just a 6" round PVC tube. I know I have not enough port area. It sounds good But, with the same total volume, would it be better to make an enclosure with the kind of port I can see in all the pics here ? I don't remember the name, sorry! I want to get the best of my sub. (I listen to rap, r' n b and reggae, and I have a saz 1000 amplifier).

alright so i think im going to be mounting my future amp to the back of a seat. is that bad? and also what material is good so the amp doesn't rattle around.

I am trying to help a friend build a wall in his '05 denali.. He has four 18" FI BLs and he's wanting to keep his second row seats, third row is gone. This system will be used for USACI SB4 and daily use to please the crowd.. Any help with a design or anything will be appreciated!

Where should i put the port? This is going to be in a blazer, and if back how much room should I leave between the port and tailgate?

im doing a wall in my hatch back i will be doing bass race bass boxing and meca driveby but how will the best way to place the port drivers side? top?bottom? any help please oh and ill be using my 2 18"treo ssx subs

I currently have 2 15 fi Q's and want to put them into a fiberglass enclosure. I will frame the back, bottom, and both sides out of MDF, but i am wanting the top and front of the enclosure to be fiberglass. What is the recommended thickness or number of layers of mat or cloth that i should apply for 2 Q 15's. Amp using the AQ 2200D amp if that helps. Thanks

I moving up from an old 200 rms orion 12" sub to 2-fi ssd's with 1600 watts to them ( or what ever my Soundstream will really put down. lol ) Now looking at the follow 2 box designs from here, ( which is super sweet that you guys posted these! ) Box 1. 12" xcon ported Box 2. 12" icon ported Outside of what appears to be an extra dolly of vertical bracing and total port area are the pretty much the same. Of course the overall dimensions are a bit different, but they have the same internal volume and tuning frequency. So which box is better? More port area make a difference when tuning is the same? Any in-site is much appreciated. Got the email today that the subs shippe…

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I am trying to come up with a good design for a ported box for a 18" BTL. Now it is going to be in my trunk but I am going to try to get a full 8 cubic feet. It can be 41" wide, 29 inches deep, and the tallest it can be is 18.5" and that is exactly right size for a 18" BTL. The only problem I have had is that I know it is going to need some kind of bracing and since I have no idea how to go about that I don't know how to calculate in the displacement of the extra bracing, and I don't know how to figuire out how big I will have to make my port to be at about 30hz. If it is under 8 which I'm sure it probably will be I'm fine with that I guess, but I need some help on how to…

Whats the best way to mount an amp on a sub box and not have an issue of the vibrations messing up the internals of the amp?

I want to design a ported enclosure with one DD9512g to put in my single cab chevy 1500. I want it to be loud, but also as musical as possible. I have about 3.3 cuft to work with. The enclosure is going to be a center console enclosure. If I find the frequency which my vehicle peaks at, will this help me choose my tuning frequency of my enclosure?

The dimensions are" 20" Wide x 18" Tall x 15" Deep = 3.125 ft^3 external Internal = 2.385 ft^3 - .15 (speaker) = 2.235 ft ^3 to work with minus whatever port area??? a little area in the back lost to the plexi window that will be put in, but negligible The speaker is a Fi BL 12, with flatwind and pchamfer options. Tuning is suggested to be 32 hz and box size between 1.8-2.5 ft^3 I can't go much bigger due to trunk opening, and for that reason I am building to boxes of the same size and putting them in the trunk that way. I mainly listen to Rap/ Hip Hop and Hanna Montana ( ) These will be facing towards the seat so that the plexi rear is visible when opening the trunk. I …

OK I'm finally going to begin my build next week sometime. The box will be a center console going from the dash to the back seat with 4 12" RL-p's facing up. My question is should I have the port firing forward towards the dash? Or firing back under the rear seat? This setup is going in an '05 Chevy crew cab. Thx for any help.

I need help building a wall in my 95 lumina, i don't want to pay 1 grand for a wall that i could build myself. Does anyone near Kansas city missouri know how to build walls? and willing to help a fellow SSA member?

So I am thinking of venturing into unknown territory and build my first ported box. I have been doing a little research but am still learning. As I understand it, frequencies below the tuning of the box can cause the driver to "unload" which can cause damage. I am not 100% sure what that means, but I digress. I have read more than a few threads that say they tuned their box to 32 Hz and then go on to say that the low-end is amazing. Now I listen to mostly rap music, and it seems like to me that there are a lot of songs with frequencies below 32 Hz. There are a couple low notes in Jeezy's "Hypnotize" for example that I am guessing dip below 32 Hz. How is it that the box ca…