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So I have 2 Kicker compvr 12's and was wondering how do you figure out what is the best shape and size of the box. I do want the box to be ported. My car is an 06 Pontiac g6 GT coupe. Don't have trunk measurements and couldn't find them so will have to measure it tomorrow unless someone can find it. Anyways what I want from this box is simply more SPL. To be honest I have no clue what people are talking about when they talk about the tuning of ports or what it's even for. Anyways if anyone can provide some feedback that would be greatly appreciated. Thanks.
Alright, so I see a lot of posts around here that say things such as “can someone help me design a box?” or “I don’t know how to use Torres.” So I am writing this guide to act as a one stop resource to learn how to design a simple box. This guide will teach you both slot ported designs. I am hoping it will go over all the basic information you need similar to the for dummies series of books. **Preperation** To start off you will need some software. Torres box designer and Google Sketchup are the programs we’ll be using in this tutorial. I have also used Inventor in the past but it is much more difficult to learn and a very expensive program. The free version of Sketchup has all the features we need. There is a write up on how to get Torres Box Calculator in the enclosures section of this forum so I will go right to downloading sketchup. Start by googleing “Google Sketchup and it should pull up this page: Go ahead and click on “Downloads” and it will bring this up: Click on the big blue button in the top right corner that says “Download Sketchup.” From there it should guide you through the download and installation process. Now that we have both Torres and Sketchup installed we can get to the actual box designing. **Calculating** For this tutorial we will be using a Sundown SA8v2 but I think you will get the idea and can use the principles to design boxes for different subs. Pull up your subwoofer band’s website and navigate to the enclosure recommendations for your specific subwoofer. If you are using multiple of the subwoofers then you can just multiply the recommended ported volume by the number of woofers. Example: 1 SA8v2 is recommended at 0.5-0.75 ft^3 Therefore 2 SA8v2s need 1.0-1.5 ft^3 And 3 SA8v2s need 1.5-2.25 ft^3 Remember this number as it will be used soon. Next, go into Torres and enter in the outside dimensions of the box you want to build, these can be obtained by measuring your trunk and making them up. For this example our box will be 9 inches tall, 24 inches wide and 12 inches deep. Entering those numbers spits out our net volume; highlighted in red. It is above the enclosure recommendations but that is fine for now as we have not yet accounted for the port. After that, enter the displacement of the woofer into the box labeled “woofer displacement,” this number is also available on the website of the subwoofer manufacturer. The easiest and most often built box is a box with 3 common port walls. Start from here and you can get more and more complex designs as you learn. So enter 3 in the box for “# of common port walls.” Now it’s time to start designing the port! For the height of the port take your overall box height (9) and subtract 1.5 (.75 for the thickness of each the top and bottom, .75+.75=1.5) which gives us 7.5. As for the width, find a number that gives a good ratio of height to width so that you don’t a super skinny tall port or something like that. I’m not sure if there is a more accurate way to find this, if there is lemme know. Once those numbers are in, play with the length until you find one that gives you the tuning you like. We’ll use 33 Hz as an example, because that’s what everyone wants to tune to. You know what they say about 33 Hz… Hold on! There is a trick; you must ensure that your Port area is within the port area range listed in the box directly above it. In this case 9.38 is within the range of 9-12 so we are good to go. Next, double check that your Net volume is within the Manufacturer’s recommended enclosure specifications that we looked up earlier. Our net volume came out to 0.77 ft^3 and we were aiming for 0.5-0.75 ft^3, so we are just barely above but it will come down a little later when we account for our bracing. If everything checks out in Torres then you are ready to move on to the design phase. **3D Design** Open up your newly installed Sketchup. Grab the rectangle tool, and then click first in the origin (where the red, green, and blue lines meet). Type in the dimensions of the base of your box with a comma in between (“24, 12” in this case). Then press enter to draw the rectangle. Now we are gonna use the Push/Pull tool to grab the rectangle and pull it up ¾ of n inch for the bottom piece of mdf. So click on the tool, then click on your rectangle, then start to pull upwards. Once you see it start to raise then type “.75” and push enter. Next we are going to draw on the walls. Click the offset tool and click on the top face of your box. Once you see it is offsetting on the inside of the box rather than the outside you can type “.75” and puch enter. You should now have this: You can use this outline to start drawing the walls of the box and port. Start by deleting the front interior wall line highlighted in blue. Then extend the right wall to the edge of your box. You should now have this: Now we can start designing the port. Start with a line that is half the port width away from the interior right wall. In this case it is 5/8s of an inch because the full port width is 3/4s of an inch, shown in blue. Next we will draw the port centerline. Start from the point you found and draw a line towards the back of the box. End half your port distance from the back wall. Take your port length that you entered into Torres and subtract the length of this line you just drew. So 27-10.625=16.375 This is the length of our extension. The two lines highlighted in blue are now the centerline of your port. You can add lines 5/8 of an inch inside of this now to create the other side of your port. This is what you should have. Now add the other edge of the port. Now you can go back and delete the centerline of the port. Now you see the design starting to come together. Add the front wall back on and finish off the edges so that you can see where the pieces of mdf come together.
Autruche posted a topic in Tunez - All things music relatedI had gotten bored and started making tones so I could tune amps. I made them all in Audacity. They are just simple sine waves that are very easy to make, but I see a lot of people looking for Tones/Sine Waves/Frequencies/Hz Tracks/etc so I figured I could upload some and help them out. All tones are recorded in MP3 format at 320Kbps. They include: Tones for tuning your system: These Sine Waves are 2 minutes long each 40Hz: 0dB, -2.5dB, -5dB, -7.5dB, -10dB: Download 150Hz: 0dB, -2.5dB, -5dB, -7.5dB, -10dB: Download 500Hz: 0dB, -2.5dB, -5dB, -7.5dB, -10dB: Download 1000Hz: 0dB, -2.5dB, -5dB, -7.5dB, -10dB: Download 3500Hz: 0dB, -2.5dB, -5dB, -7.5dB, -10dB: Download 5000Hz: 0dB, -2.5dB, -5dB, -7.5dB, -10dB: Download ___________________________________________________________________ Individual Tones: 1-100Hz. I have matched them the the tuning tone amplitudes so you don't need to readjust your gain for a competition. 1 full set recorded at 0dB 1 full set recorded at -2.5dB 1 full set recorded at -5dB 1 full set recorded at -7.5dB 1 full set recorded at -10dB These Sine Waves are 20 seconds long each. 1-100Hz: 0dB Download | -2.5dB Download | -5dB Download | -7.5dB Download | -10dB Download Alternatively, you can download them in smaller zips to get the tones you need without downloading all of them. 1-9Hz: 0dB Download | -2.5dB Download | -5dB Download | -7.5dB Download | -10dB Download 10-19Hz: 0dB Download | -2.5dB Download | -5dB Download | -7.5dB Download | -10dB Download 20-29Hz: 0dB Download | -2.5dB Download | -5dB Download | -7.5dB Download | -10dB Download 30-39Hz: 0dB Download | -2.5dB Download | -5dB Download | -7.5dB Download | -10dB Download 40-49Hz: 0dB Download | -2.5dB Download | -5dB Download | -7.5dB Download | -10dB Download 50-59Hz: 0dB Download | -2.5dB Download | -5dB Download | -7.5dB Download | -10dB Download 60-69Hz: 0dB Download | -2.5dB Download | -5dB Download | -7.5dB Download | -10dB Download 70-79Hz: 0dB Download | -2.5dB Download | -5dB Download | -7.5dB Download | -10dB Download 80-89Hz: 0dB Download | -2.5dB Download | -5dB Download | -7.5dB Download | -10dB Download 90-100Hz: 0dB Download | -2.5dB Download | -5dB Download | -7.5dB Download | -10dB Download ___________________________________________________________________ Tone Sweeps: 1 full set recorded at 0dB 1 full set recorded at -2.5dB 1 full set recorded at -5dB 1 full set recorded at -7.5dB 1 full set recorded at -10dB Each track is roughly 45 seconds long. Tracks are: 10-80Hz, 10-20Hz, 15-25Hz, 20-30Hz, 25-35Hz, 30-40Hz, 35-45Hz, 40-50Hz, 45-55Hz, 50-60Hz, 55-65Hz, 60-70Hz, 65-75Hz, 70-80Hz 0dB Download | -2.5dB Download | -5dB Download | -7.5dB Download | -10dB Download ___________________________________________________________________ Tones for setting filters: 1 full set recorded at 0dB 1 full set recorded at -2.5dB 1 full set recorded at -5dB 1 full set recorded at -7.5dB 1 full set recorded at -10dB Each track is 1 minute long each. Tones are: 80Hz - 100Hz - 125Hz - 160Hz - 200Hz - 250Hz - 315Hz - 400Hz - 500Hz - 630Hz - 800Hz 1000Hz - 1250Hz - 1600Hz - 2000Hz - 2500Hz - 3150Hz - 4000Hz - 5000Hz - 6300Hz - 8000Hz 10000Hz - 12500Hz - 16000Hz 0dB Download | -2.5dB Download | -5dB Download | -7.5dB Download | -10dB Download