SPL & SQ / Fabrication

I just got a set of Dynaudio 240GT (MSRP 975$). Before I install them I was would like the best option for imaging. Is there a rule of thumb to tweeter placement (the woofer is going in the stock door location) but the stock Toyota tundra tweeter placement is high in the door, IMO the only place worse is the top of the dash. I don

I'm assuming if i had one of those woofer testers to pull the T/S parameters of a speaker, it would pull different specs if i took a single DVC subwoofer and tested it wired in series, then tested it again in parallel. Well, i dont have one so i'm gonna rely on those experienced here to relay some info to me. I will be using 4 subwoofers, 2 subwoofers per amp. Each pair of subs are dual 1 ohm. I have 2 ways of wiring this- 1 - Parallel both subs then series them to the amp 2 - Series both subs then parallel them to the amp Is there a difference in SPL potential between the 2? this info is pertaining to a meter, not the ear. I notice when looking at specs of subs, in gener…

ok so i got a 2001 4runner and i need a box for a 10 downt know how much watts or even what sub yet but would slot ported be my best bet for a daily want to hit all notes but 33 or 34 hertz will be my bottom end what i want any help would be appreciated

Ok, this is giving me a headache... I dont know the exact volume of the box but it's somewhere between 12-13.5 cuft NET or it should be... This is what i've got and cant figure out why... I had a port 25.5" long that peaked at 50hz. I then had a port 22.25" long that peaked at 51hz I then had a port 20" long that peaked at 52hz I then had a port 18" long that peaked at 53hz I then had a port 16" long that peaked at 54hz The port extends through a double baffle (1.5" thick) and sticks out of the box 5" I always cut off the port length on the INSIDE of the box and retest. My peak frequency is 50hz. My LOUDEST port test was at length - 20" which peaks at 52hz but is loudest…

I'm considering building a down fire for 2 D-CON 10's. Will be subs down,port back, box against back seat. Going in a Land Rover. I only cosider this because I do use the cargo area often and want keep the subs out of harms way. My question is how much room do I need between the floor and the woofers???? And should I just elevate the box by the end plates or do a 3sided lift leaving only the rear open???? Or is it a bad idea all together???? Is a daily thumper setup.......just want to keep my investment safe.

Would a box that is 2.046 cubes after all displacements with 2 ports that are 1.875x8x22" (will be behind my back seat in my truck) be ok or sound good or give me fair spl numbers with 3 or 4 sa-8s v1 d2s or 3 or 4 orphan 8s in it running off a crescendo bc2000? Is it enough port area? Box volume? Is there anything I should change?

whats the max dimensions that will fit through a trunk of a mustang trunk opening... wiered ass trunks

What makes this sub the happiest on daily?? It will be built out of birch ply, fed about 2ooo watts and space isnt a issue.. helps appreciated.. Im not asking for a box design, just what volume and tuned to what, I can design.. Thanks in advance..

Anyone ever used plum ceek Mdf to build a box out of? I was thinking of trying some.

As the topic says. I need to know can't fid it anywhere.

my friend has 2 15"s just sitting at his house and needs a box for em. he's got a 2000 s-10 blazer, and the cargo area is i believe only 36 or 37" wide between the wheel wells. any help on a design for this would be appreciated. we should be building it next weekend.

Anyone from the Long Island NY/NJ/CT Area want to build me a sealed enclosure for 2 12s - or know of anyplace that would? I'm not looking for anything extravagant, just something ~ 1.5 FT^3 per chamber. I don't have the time to do it myself (and I've never made one). Trying to stay away from pre-fab junk. Shipping or Pick-up is cool. Can someone help me out? Thanks, Snapper

Well, I built the box as recommended by Bromo but somewhere when I was taking measurements I messed up. It is currently 35Wx15Hx19D. If I take 1.5-2 in. off the width and extend the depth? Would I still get the sound as before?

Alright, so my boss finally warming up to the idea of making a wall in his Cavalier for our shop demo car! Now, this isn't 100% going to happen, but I'm excited and want to be ready for when he decides. I know this place has a ton of knowledge, plenty and plenty of people who have made walls. I guess I'm looking for just general rules and/or tips to make sure it will turn out well. Iv decided just to make a normal, flat and vented wall. Leaning towards 4 15's with a nice big slot port on the drivers side. Any tips are welcome of course, thanks guys!

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 …

So my brother keeps telling me that even if i port my box that it will have no effect on how loud it will be, because it is in a trunk and that the only way i will tell teh diffrence is if i have a suv or fold down seats I know this is not true, but to an extent it kinda makes since

Looking at sub manufacturer recommendations, box sizes for each sub can vary by quite a bit. I'm just curious what the difference is. I know that a larger box decreases power handling of the woofer, but is there any difference in sound? Is a smaller box more susceptible to peaking? Sorry for the newb question - I'm trying to decide what will fit in the trunk. Thanks guys.

Hey guys new to this site and would like some help im not new to building boxes done a couple but always had a blue print for them .I have an 03 envoy and have 48x30x36 to work with im planning on getting 2 18bl powering them up with 1800 watts a piece 4 kenetic batts and 250 amp alt.just need help on getting blue prints for my build.thanks

this box im making for my ta is a PITA. having to make all sorts of corners and angles to utilize every inch of space in my well. coming along good so far, i've got the bottom half done, and im coming to where it angles and comes to the top of the box. how do i go about screwing in the angle? do i just countersink it further in on the outside of the box, so it doesnt poke out under the carpet, and put the screw in at the same angle as the wood?

alrite i started a thread on here not to long ago abou tthe elastomeric coating that steve meade used on the inside of the his box and didntt get many replys. i am pretty much done with glassin the inside of my box but i havent started sanding yet. i read about painting the inside with 2 stage paint making it alot louder becasue the waves travel better across a smooth hard surface. but the only problem is i would have to sand the inside to no end. i was plannin on sanding it to an extent and then sprayin it with spray filler primer and going from there. but i have a deadline in a few months and i dont know if this is going to be possible. another factor is that i will bea…

So i was trying to look for some pictures of a box terminal made out of ring terminals, nuts , and bolts. So i can have a idea on how to do it. Thanks.

I have an 05 denali and want a 5 cu ft. box made. I went on re box calculator and my measurements I typed in made the box not square. Could someone give me a hand and give me some dimensions or a drawing???

Hello, I have a box designed and it currently has 4.6 cubic feet net internal volume after wall thickness/drivers/bracing. I would like to port this box and the port face is 13.5hx4w. What length would the port need to be to tune the box to 33hz and 35hz? Also what would the lenght need to be if the port face was 13.5hx4.5w? Thanks

i had an idea similar to these enclosures for my next project and i was wondering is there any downside to having one built like this?

so i inverted my 18" fi q today and have the motor sticking out...it is alot louder. i can now do a hairtrick, which is what i have been striving for lol, my question is....why does it make it louder? is there any theory behind it or is it something that just is?