SPL & SQ / Fabrication

Well the classes are now set and instead of using 4 ohm ratings since there are too many Grey areas I am using rated maximum rms power at the amps lowest rated ohms. That way a 1 ohm 1000 watt amp is still in the same class as a 2 ohm 1000 watt amp. This will also make people see the difference between the swap meet power amp they bought compared to a real rated power amp in the same class and should bring those customers to the retail store instead for their next purchase especially if the retailer explains why his B.S rated amp just lost to the real power rated amp.The classes are more geared to the normal customer more than the bigger powerhouse systems but still allow…

i want to thank those of you who pointed out the error of the batterys as projectiles. there in a safe place under the amp rack now... back seat has been removed / replaced with a flipp up amp rack boxx placed for fitt

I am noticing some mixed thoughts on enclosure bracing. My opinion on bracing is to brace areas larger than two square feet. Again that is my humble opinion, no scientific study. I have done a little bit of research and I have not been able to come up with an definitive answer. I had a Team SSA member tell me today that a mounting baffle for 8 12" subwoofers does not need bracing. That seems like a far stretch for me to believe. But then again, I am basing my enclosure bracing off a hunch. Can anybody name a scientific evaluation that has been performed on enclosure bracing and it's proper application? Or even a good article written by a reputable source on enclosure brac…

I'd like a box cabinet plan drawn up I don't know if I'm going with this design yet or not, but if I do I'd like to have a plan for it. I'm basically doing a homebrew version of this: http://www.omegaloudspeakers.com/ts33.htm Using these drivers: http://www.madisound.com/pdf/fostexcabs/fe126e_encl.pdf If it models well, I wouldn't mind going with a tower speaker instead of a bookshelf - although I don't know exactly how it would react. Thanks...

Just like the title says, what is the best way to splice a wire? Solder? If so what kind? How about some sort of crimp thingamabob?

I am a novice and I have heard it discussed about "tuning" to 30-35 htz. How is this accomplished?

I've got a 91' honda prelude, and I'm going to try and use as much of the trunk as possible for a pair of 12's, rather Fi BLs or Fi Qs. I'm thinking of firing the woofers up at the trunk lid or against the back of the trunk, and having the port vent through the trunk opening into the cabin of the car. I've heard how horrible sealed boxes sound if pointed through the trunk into the cabin, I'm just curious if the port would create such a horrible effect. I'm building the box to pretty much use all of the little space I have, so there is nowhere else for the port to be free of obstruction. What do you guys think?

I am trying to decide whether I want to go sealed or ported. My question is with tuning frequencies. Lets say that a subwoofers optimal tuning frequency is at 33hrtz and someone builty a box for 35hrtz, how would that effect the sound. And also what would the effect be if it was the opposite and designed a box at 27hrtz, how would that effect the sound. Sorry if this question has been asking a bunch before but I couldn't really find the answer I was looking for.

Hey all.I REALLY want to build my own box but im worried that it would be to hard to do.I would like a simple dual 15" ported box for my type r 15's.I just don't know if its something I can tackle or not.So my question is in your guys eyes on a scale of 1-10 1 being easy as pie 10 being hard as can be,how tough is it to build a ported box?Also is there like a site or something that can help me with a design and other stuff like that?Thanks

So As I've been tired of looking at how my subwoofers look,(well the looks), then I've decided to make a custom ported box...only difference I'm going to fiberglass it so it's not going to be cubed anymore...so I'm trying to find out my volume so I can calculate all the port things...

I just got done discussing with someone what i am doin with my wall in the car and have found a solution, a very cheap solution. I need to have my wall flared on the inside and outside to try and achieve higher pressure levels. My port area is 16.5" wide x 11.25" tall. Look at the bottom pic to see what a Bellmouth port looks like- for my application - There is a guy around town that can make me ANY custom size, flare, etc for my wall so i told him to hold off for a couple weeks while i test other things before i venture in flare port testing. I have some questions though so i can get him to make the proper size. The outside flare can stick out of the box a MAXIMUM of 5…

Ok, so I have a 3.3 total cuft box as a center console and i cannot reach over to the other side of the truck to roll down the window/unlock the door. (no power windows/locks sucks) I hear if you add poly fill to an enclosure, the enclosure behaves as if it is larger.. So I was thinking build a smaller box, but add polyfill to make it seem larger. So in the end, I will not have sacrifice output with a smaller box. If this is possible, about how much air space could polyfill potentially account for?

when building kick panels for 6.5 comps would it be better to leave it sealed or to cut a hole and vent them into the inner fender. what is the sound diff in the both. thank you.

my box is 9.0cf net with 120'' of port for everday what i need is a port for spl this is in my ford explorer 4door i am runing 2--15''subs on 1400//1600ea rms and how would i do this do i make a port that i can take out and put the spl port in are what//// what is the best way to do a sq//spl port setup any help would be nice thanks alot

Can someone help me out with some dimensions for a sealed box for 2 Icon 12's? Need 1.25 cu ft. per speaker. Going in an Escalade. Have 46.5" width avail. Currently in a badass ported box I built. Want to try out the sealed enclosure for SQ. Attached a pic of my current box.

i blended the sub down to fit in with the front stage and all i can hear is Loose Plastic panels Rattelling... s0o0o0o0o i have spent the last 2 nights re-doing the front doors & the thinggy in the headliner of the explorer... now all the Rattelling is behind me... Dammmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm it...

hey guys, im purchasing 2 12" Fi ssd Im looking at a ported box, I was just wondering if i need the divider in the middle of the box giving them their own little chamber? or can i just make one bigger port rather than 2 smaller ones ? also aeroport? Is it worth the try ?

Let me start off with the basics. I have an '01 Accord and I'm looking to do at least 140 on music, but the louder the better, but I want it to sound pretty good still. So, in the works is possibly a 5200, whether it will be a 15 or 18, I don't know, thats why I'm comin to you guys. I have a 170A alt, Odyssey 1200 under the hood and 2150 in the trunk. I have an RF T30001 for my amp. I'll be able to do either a 15 or 18 ported (the 18 requires 5 cubes after all displacement). THis works great for me since I fit in an enclosure that was 5.5 cubes after displacement. Whether a 15 or 18, it will fire up due to height restrictions. I'm just wanting to know what will be the di…

is there any disadvantage to having an extremely large port? lets say 20+ inches per cube?

Hey everyone, Long time lurker here, finally decided to pull the trigger on a 12" ICON and would like recommendations for an enclosure. Given my driver choice I'm obviously going for sound quality. But who doesn't like a little bit of output? It will be going in an IS300 and run off of a PDX M12. My ICON will be seeing anywhere from 500-1k watts depending on where it blends best with my front stage. Anyway, I noticed that on the product information page for the ICON there are two different optimum enclosure size recommendations. Under the "Enclosure Recommendations" tab it lists ported optimal as 2.25 ft^3 @29-34hz whereas the "Pre-Designed Enclosures" tab has a l…

ALright so i want to do a kerfed port on my next box... i read a thread and i am almost ready to give it a shot. However i have one question. when you do the kerf, do you use the port piece to kerf and then attach it to the front piece on the box or is the port piece and front piece one seemless piece with the kerf in it? if this doesnt make sence i will try to expalin better.

My plan is to use 3 fans as a just in case precaution the way how i am making my new floor in my car to house my amps. I will be contacting a couple companies tomorrow but before that time comes, lets see if anyone knows this- Can pc case fans be used in my car? I ask this because of the following- All these case fans i'm looking at are rated as follows- Rated voltage= 12v Starting voltage= 6v (there is only 2 lines on the fan, +12v and -12v so 6v gots me lost... Anyways, i do not know the voltage tolerance of pc case fans... My voltage runs at 14.9v. PSUs typically are set to a max of 10% + or - on any voltage line before they shut down. This means a pc fan could never …

is the DD9112,AQ LW12,or Eclipse Titanium SW9122 better for SQ?

i would like some idea's please i have about 3.352 cft internal external 40.5"width 10.5"height 18 depth,i wish to use 2 or 3 old usd 1260 subs. speaker paremeter RE 5.24 QTS 0.39 QMS 15.60 FS 12.29 QES 0.40 XMAS 3.708 LE 1.01 Z 8 OMH PE 200 i would like to try and build a transmissione line box. i found this info for building the above box.please can any one help me all help will be gratefuly recieved. below is an example of how to make a transmission line 43.46 / 4 = 10.86 10.86 is the throat length of the enclosure. Designing a transmission line enclosure ________________________________________ sample specs. -- radiating area of subwoofer …

what is the better year for spl? I think that they changed body styles in 88 so before or after then. Since I'm looking for another car that's good on gas this would be an option. Just lookin for for suggestions and maybe a tip or to too get them loud. thanks