SPL & SQ / Fabrication

Vehicle: 1992 Ford Festiva System setup: 2 layers of peel and seal on the roof, hatch and entire cargo area from bpillars back... 160 amp ohio gen alternator, 950cca optima red top up front, xs 450cca in the rear... big 3 with accel 2 guage power and grounds....head unit - jvc-kd-avx2.... amplifier - atomic 1000.1....american bass 4" coax (front and rear).... subs - 2 sundown sa8d2 version1's Space to work with in hatch area:: 35" wide 12"deep 16"high material: 1" NOVA PLY goal: MECA Street 1/ 142-145 @ the headrest Car peaks out at 50 hz with mic on passenger seat, drivers door open, passenger door closed, woofer on passenger side, port on driver side, woofers and port f…

alright guys i was just wondering if someone could either link me to or explain the pro's / con's of tuning higher and tuning lower? and how to figure out how enclosures should be tuned in regards to diff subs and scenarios? thanks for any help guys! (i ask because im not new to building enclosers, ported/tuned, just want to understand the tuning aspect better because i plan on building some enclosures locally for some friends and friends of friends - just want to make sure i make the best enclosures that i can...i need the extra money..lol)

i have a 16x19 area for the bottom of my box. im downfiring my ICON 10. any reason to have the whole bottom elevated instead of just a 12 inch square around the sub? Im trying to gain some volume anywhere i can.

Well looks like I will end up with 17.87cu before bracing and sub displacement. I really want to end up with 17cu total after. This is for 2 18in FI Q's on 3k watts. Box dimensions will be Outside 35h x 54w x 27d.... All sides double 3/4 MDF except front baffle will be triple. (may use some Birch for weight reduction) Usable inside demensions are 32h x 41.5w x 23.25d = 17.87cu Port is 8 x 32 = 256in total Sub displacement = .24... but I will be triple baffled so what maybe .22 or less?? Total of six 2in hardwood dowels for bracing =.35 2in wide 45's in corners =.10 So this leaves me with 17cuft tuned at 30hz after all is said and done. I may glass the inside as well? what…

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Now I gott figure out the volune but my wierd ass box isnt liek any of the calulators boxes

In the back of my escape there is little room, especially with the rear strut towers protruding about four inches out each side. The space I have to work with is as follows: 40" wide, 24" deep on top, 32" deep on the bottom. which comes out to be about 10 cubes. The height is what can move, although 18" is ideal. I'd like to keep the box rectangular but if I have to make the back slanted for space that's fine. I want the box to be ported but I have very little room. What type of port should I use and will this work for two 18's? Brand is yet to be determined, I'm still in the planning stage.

Hey guys, I have been modeling different alignments for my Dayton RSS265-4 HO woofers. I like the look of 1.2-1.4 cu.ft after displacement for both of the tens, tuned around 30 hz. My question to you guys is how much port area I should shoot for? Would two 3" aeros be adequate? According to the modeling program, I would exceed 25m/s vent velocity using 2 3" aeros, but not by much. This install isn't meant to shatter spl records and each woofer will probably never see more than 300 watts, so taking this into account I don't really think I need such large port area. Looking for suggestions, Thanks

Hi Guys, Hope you are all well and i aslo hope that some one can assist me with working out the correct spec for a true SPL box. please note I will only be doing SPL with this box. Ok so I have 18mm ply wood, 1 12inch subwoofer, 1 amplifier and 1 battery. Here's what i'd like to do Get a minimum of 151db's from this setup Equipment DD Z1a NSB 170 12v Targa TG301-DW The sub specs are as follows and i could be wrong because this is taken directly from the site. 12" COMP SUBWOOFER - DUAL 1 SPECIFICATIONS Fs (free air resonance): 48.7 Hz SPL (efficiency, 1W/1M): 89 dB Nominal Inpedance: 1/2 Ω Qts (total speaker "Q"): 0.606 Qes (electrical "Q"): 0.732 Qms (mechanical "Q"): 3.5…

Hey guys i would fist off like to say thank you for the big 3 help. i have all the parts but the wire and am getting ready to start it, The subs i will be getting will be two 10 inch FI SSDs with cooling, and amp i am not sure yet but might go with a new crescendo amp SSA now sells. also getting a second battery down the road. Well the question is do i port the box or not? I have the space to do it and i was going to do the port out of the top of the question is what do i do inside the box here is what its going to look like and it will be the same on the other side too. any help will be great

Just picked up a SA-8 v.2 and I need some help designing a box. Every design I find is for 2 subs, but I'm only going to be running one. This will be in a trunk car and powered by a DSC1500.1D. Maximum dimensions are 14" H x 36" W x 18" D

anyone know off hand the length just the 2 flairs and conector

What up SSA. Thinking about ordering a single Gcon 12" and running it ported but just want to make sure my calculations are accurate before doing so. Volume (Net): 1.81^3 ft Dimensions: 13.5" (H) x 30" (W) x 12" (D) Tuning: 32.75Hz Number/Size Port: 1 x 4" Flared Port Length: 15.5" Port Area (per cube): 6.94"^2 Vent Mach: 0.11 Is there enough Port Area? Is this a good size/volume for a 12" Gcon? Also, I plan on placing the woofer and port on the same baffle, on opposite ends. This would require a 90 degree elbow bend for the port but there should be over 7" of space between the end of the port and the subwoofer so I don't think that will be a problem.

I've used the original without problems for quite some time. I upgraded to the pro version which has a lot more features but never could get it to work. It would always crash or show errors when I loaded the T/S parameters. Fits of rage and nearly throwing my laptop under a moving bus. Andrew Vaserfirer from HTS figured out the solution. After doing it exactly how he told me it works perfect! I wanted to pass along the info since I know several people have had issues. Again, this is all compliments of Andrew. Ensure that 'Auto calculate unknowns' is on even if you have all the data. This is recommended because WinISD Pro can be very picky about the data and if it is e…

Would there be any negative effects from running all-thread though the back of my box directly into the cab of my truck. The back wall of my truck is already threaded and I could strongly secure the box this way. But Im wondering over time will I get leaks or put to much stress on the MDF. I will be using 1in MDF more than likely. I would seal it and also use a 1/2in rubber mat between the box and back wall and floor to help with sound deadening and vibration. I also will be using the back seat metal bracket to mount the floor to, I can also run allthread through box and floor threaded directly to the metal brackets. This will be a semi wall and will probably make beauty …

now... this is my first wall that i will be doing. and i am not to sure on how to go about starting. i already have a cardboard mock-up of the false floor...but thats it. my car has alot of wierd curves etc, so im not sure how to exactly "measure" my deminsions. so how would i get a volume? i will need someone to design 2 ports for me as well. basically, how do i start? any info is appreiciated. its 4 DCON 15"s off of a sax1200 here is some pics of the rear. its going BEHIND the 2nd row of seats.

I am new to the forum and I am trying to get help on something I just dont seem to be understanding. I have a Ford Explorer and I have two Lethal Injection 12's (4ohm/dvc model). I wanted to see how they sounded sealed, since I couldn't find anyone on the web. Only people asking has anyone done it. They are clean, crisp and loud being pushed with 800watts each. The sound quality is phenominal whether soft, medium or hard hitting. If I open the front doors only, its like a huge ported box turned up using old school SPL comp cd's. The pressure level is unreal for a sealed enclosure. I cannot say enough good things about these speakers. Best investment I made for not a lot …

I currently have 4 cube after all displacement with 43.75 sq/in of port fireimg down the middle tune @35hz. I was told that offsetting a port to any Side would raise enclosure efficiecy And get louder.how true is this? my new plan is 3.8 cube with 50sq/in of port tune @32hz with the port off set. sub are fi btl12 n2 with the mmats hd4000.05 and dc xp 270 alt x3100 in the rear xs2700 up front in a 03 impreza sealed off from the trunck.

Howdy, I am going to be walling the astro soon and wanted to get some ideas of what type of walls there are and whats the benefits to them.I am walling it with 8 18" icons I havent set the amp in stone yet but I am contemplating between a DC 12k or a Soundigital 16k. once again the amp is up for debate. There will be a multiple alternator setup with battery bank to supply the amp or amps that are chosen. but with all that out of the way! Dimensions I have to go with are 48" tall 51" wide and up to 97" deep but I really dont need that deep lol! we still need to leave room for amps and batteries! I was throwing around the idea of a clamshell or maybe a 4th order just not …

Hey, I am looking to build an enclosure for one Sundown E-12 in the near future. I plan on putting it into a 2.5 cubic foot enclosure. (PWK recommends an enclosure for the E-12 of at least 60L (~2.1 cu ft) for a more linear response) I also want to use a 4" aeroport (precision port) 10.25 inches long for a tuning of 32 Hz. I think my question is, would it be alright to tune this box to 30 Hz? All it would require is 12 of port length compared to the ten and a quarter. I'm just slightly confused because I have heard not to tune too far below a subs res. freq. because it might cause roll-off right at the tuning. If it sounds stupid, that's because I read it once somewhere o…

My dad has an E8v1 in his van in an old box that was from a component set, he needs a new box. I have leftover wood from my box so I thought I might as well use it! Using sundowns recommendations I figured .6 cubes with a 7x2 PVC aero port. My question is how much port area should it have and what frequency to tune to. He listens to rock music, should I even port it?

Basically those bars connect the hinges from the left and right of trunk lid. They are bent in that way to accommodate the 6x9 speakers. I am going to remove the speakers this week. Could I replace them with some straight bar???

I have an 18" zcon on order so I'm starting the build here in the next couple days. I have two designs worked up and just curios what every one thinks would be better, more so concerning port area. I plan on using either a 10" or 12" round port. Box will be sub up port back in an 06 xterra. First design: 6.93 cubic ft. after all displacements with A 10" port tuned @ 37 hz port area = 11.38 per cube Second design: 7.4 cubic ft. after all displacements with a 12" port tuned @ 37 hz port area = 15.28 per cube Just curious what everyones thoughts are, thanks

ok guys, its time to get some plans going for this box. im using 2 12" ssa zcons and pushing them with a audiopipe 3k (ONLY UNTIL I CAN AFFORD A BIGGER 4K+ AMP) so its not my perminant amp here fellas. i took my max dimensions tonight and used a box calculator and i have 6.81 cubes to work with. as for tuning, im not really sure. i like my lowwss (30hz or so) but i want to be able to throw up decent numbers. i was thinking 34-35hz maybe?? not really sure. thats why im here asking you guys for help on this so i dont waist my money.

Okay so i already had a box designed before but i wanted to try it all on my own...thanx to the12volt.com box and port calculator i figured out a simple box i can build...here are the specs BOX: W-47" H-25" D-28" PORT: W-30" H-5" D-10" The box will be 16.4cu ft and it will be tuned to 35hz...the port will be facing back with subs fired up/inverted...