how to build a marine subwoofer enclosure

(This is where Geometry comes in!) -When assembling make sure that you clamp everything to ensure a good bond. If you need something above 100db I would suggest getting a different subwoofer. Therefore, the box will need to be 2.5-3.5 cubic feet. This is called “unloading”. Another thing to account for is how much volume that the subwoofer will take inside the box. Example: Motorcycle Amplifiers; Motorcycle Speakers; Motorcycle Stereos; Motorcycle Subwoofer; Shop Sonic Electronix; Home Tags Build a subwoofer enclosure. This will take up more space in the vehicle. Simple sealed enclosure with internal cabinet bracing: Sealed enclosure frequency response curve: Violet - large sealed enclosure Be sure to check out our selection of subwoofer installation accessories — we carry a variety of speaker terminals, port tubes, carpet, and other accessories you need to build your box. Determine the enclosure's type. If the port has too little area, the airspeed in the port will be higher and can cause “port noise” at high output levels. When you are building the box(lets say you chose a ported box since that is really common) You need to figure out what tune you want to make the box. Use the smallest dimension of the rectangular port as the minimum amount of space required between the port and any surface to insure unrestricted airflow. Isobaric enclosures are designed to get the maximum bass from a very small space. Example, if you have a 4” diameter round vent, it should not be closer than 4” from the back of the enclosure to prevent it from detuning the enclosure. Any areas not sealed between the front and rear of the baffle will decrease the amount of bass. 3.57 / 2 drivers = 1.79 cu. Here are some progress pictures shown above. This is just a very basic summary of car audio, there is a lot more into it then what I have said here. The top two MDF layers are enough to let the subwoofer pass all the way though, where it will sit and attach to the third. in. A larger ported box will have more group delay because of the size of the enclosure and its design. For example, if using 3/4" wood, you'd subtract double the thickness of the wood from each dimension to get internal dimensions. Which amplifier to use with 400w sub...and I want to power 2 subs.? They are usually built within a range of internal volume specified from the manufacturer. The air inside the enclosure works as an air spring to control cone movement. Kicker 43KMW102 Marine Subwoofer. To achieve the most output, you will need a very large ported enclosure. Infinite baffle frequency response curve: An infinite baffle is not necessarily an enclosure. If you do not follow the recommend specifications, poor bass response and/or damage to the woofer are very possible. $299.95. Using MDF I cut the peices that I needed to frame the inside of the enclosure and hot glued & super glued the peices in place. If you have decided to put a port inside your box remember to account for volume that it will take inside the box. Currently I have it tuned to 18hz for home theater use. It is a material that is lighter than MDF because it is not as dense, but is still sturdy enough to work well. Thefirst step in building any subwoofer is selecting the driver, as this willdetermine how large an enclosure you need as well as what you need in terms ofamplification. That way when i want to listen to music for a long time i tune it to 20hz and if I really want to show off the subsonic range of my theater I go to 16hz. 7 years ago When building an enclosure, the enclosure's walls should be as rigid as possible. Hport = 3" Fastening the enclosure down can help solve this issue and result in better sounding bass. When tuning a ported enclosure, you must make sure that you have the proper volume of airspace, the correct port area, and port length. Kicker recommends using a good grade of wood glue and silicone sealer for an airtight box. It also has a textured finish that contributes to its overall durability. I'd like to generate freq.s as low as 18hz, much lower if possible. 4) Follow installation steps. The lower bass response in a sealed enclosure will roll off at a rate of 12 dB/octave. The most common application will be from the front baffle to the rear wall and between the top and bottom walls. First and most important is the area and length are very critical for proper tuning. Currently working at a electrical manufacturing site to get my way through college. Piece of cake! Here are a couple more examples of the different shape enclosures you can build. (refer to the manufacturer’s recommendations). This step is completely up to you. Well I gotta say it is amazing, good job. ft. 1.79 - 0.0538 = 1.736 cu. The advantage of the ported enclosure is it can play louder before the lower bass starts to roll off. Staff Writer-September 11, 2009 0. I'm planning on building a subwoofer capable of infrasound frequencies (I'm an artist newly interested in exploring the effects on the human body by such low freq.s as standing waves in specific environments) but unfortunately my knowledge of acoustics/subwoofers is currently pretty minimal... Do you know how I might best go about achieving this? Measure this area and write down the height, length and width dimensions in inches. The formula itself looks pretty simple: Area x Length = Volume. Dividing by this figure converts total cubic Inches into total cubic feet. 6103.13 71728 = 3.53 cu. B) is a little more difficult to work with than just an angled enclosure, but we'll help you through. With a small sealed enclosure, the bass will be very “tight” and controlled. High power levels below the tuning frequency will overdrive the cone movement and damage the speaker. Driver Displacement: The driver also takes up air space inside the enclosure. Do you think that would work? I'm getting ready to tackle building a sealed subwoofer enclosure. Dividers are a very important part of box building because they create strength in the box and provide an airtight seal between the speakers. It’s important to note, infinite baffle does have some limitations. Each one uses 12.5" cu. Designing and building your own subwoofer can be a rewarding experience. The woofers can be mounted into the enclosure face to face with the outward woofer wired out of phase with the woofer that has its magnet inside the enclosure. Thanks for your reply, this is a great help. 0.46 + 1.13 = 1.59 cu. This is a simple, three step process that can save you a lot of time and hair pulling! Corner braces are usually made from left-over enclosure wood and measure approximately 1" (2.5cm) wide. Quick view Compare Out of stock. The braces should be glued and screwed or stapled to the walls and caulked on both edges where they meet the walls. Remember that bass can travel through anything that is not solid such as the rear seat foam and even other speakers that are mounted near the woofers. You want this subwoofer to be air tight otherwise you will hear high whistling from the sub when it is playing. 12.5x39.5x12.5 = 6171.88 You can also install manufacturer enclosed marine subwoofers. Advice:       -The subwoofer box can be extremely heavy and awkward to carry, get some helping hands if you need to. To calculate internal volume, you must subtract the thickness of the wood. Another possibility though, is the 10" Freeair driver in a ported enclosure. -If you notice any open cracks make sure to fill it with glue or some other filling material. 12x 3.14 = 3.14" Next, we'll multiply this by the port's length, 12". Make a subwoofer enclosure plan. We deducted two inches from the length so the braces would meet instead of overlap the other corner braces. Rockville RSVK12 Single 12” MDF Vented Square Solo Baric L7/L5/L3 Enclosure Box. 54" - 1.5" = 52.5" List price: Previous Price $349.95 14% off. A window will show up looking like the picture above. One option that I did was to double and triple the box's walls. When adding braces to an enclosure always add the displacement of the extra wood to the gross box volume as it is designed. If you are going to be using the Pyle Pro I would suggest tuning it around 15hz, but watch out for mechanical limitations on the driver. The other trait of ported enclosures is they have no control of the driver movement, called excursion, below the tuning frequency. 3) After download is complete run executable file. Result - we use 12" Kicker Competition woofers in a sealed enclosure! Now it is a balancing act between size, sound, and power handling. Kicker combined the electrical and mechanical properties of two woofers into the single Kicker Solobaric woofer. Do not install a ported box with the port against a solid surface. We're using 3/4" MDF again, so deduct 1.5" from each dimension. Bending the vent will also restrict the airflow and will slightly detune the enclosure. From measuring, cutting and finishing this 3 part video series covers it all. One of the key ways to control cone movement below tuning frequency is to use a subsonic, or infrasonic filter just like we recommend for infinite baffle. The vent shape is not as critical as the total area of the vent. ft. per driver. One of the chambers is vented to the outside environment. Unlike building ordinary home cabinets, looking for the most ideal wood for a subwoofer enclosure is more complex since you need to select a wood type that can allow sound to resonate with ease. The following information is available for you to use at your leisure. Since the speaker is completely enclosed inside the cabinet, they have much more group delay. Hook up the speaker wires. Our third pick pushes watt power from 400 with a peak of 800, … Purple - large sealed enclosure. Be sure to check out our selection of subwoofer installation accessories — we carry a variety of speaker terminals, port tubes, carpet, and other accessories you need to build your box. The woodworking entails building a box, bracing the inside, and staining or painting the box. 1) Once you have selected all the parameters of the subwoofer that you want using winISD. The volume, of the design you choose, must stay the same. So all bracing combined uses 250 cu. Modeling the Pyle subwoofer with your current box size it would get about 105db(at 18hz and at max power) tuned to 15hz. Also, since they don’t have an enclosure, there is nothing but the suspension of the woofer to control cone movement. Furyous. Always use 3/4" or thicker MDF and make sure all the joints are secure and well sealed. Avoid thin wood because the subwoofer will cause major amounts of compression and decompression inside the box. The smaller sealed enclosure will give you a little more output, or “bump” as it is called, before it rolls off but will start rolling off bass response at a higher frequency than a larger sealed enclosure. 00 $349.95 $349.95 Circle Area = (Radius) x (Radius) x 3.1415 If choosing a laminated variety, it is important to make sure that there are no defects present as this can affect the sound and cause a subwoofer box to rattle. Cover the back, top and bottom of the speaker box with 1 inch (2-1/2 cm) of poly fill to minimize resonance. Following the directions in this article, you should be able to build your own subwoofer box. So, to get the accurate volume of the enclosure, we'd need to deduct 37.68 cu. 10" driver 1.757 - 0.0289 = 1.7281 cu. The woofer is mounted inside of a two chamber enclosure in the divider between them. You'll want to divide total cubic feet by the number of drivers to be installed in the enclo¬sure, usually two, to get the total cubic feet per driver. what does it do? Below please find the speaker/dr… 3/4" + 3/4" = 1.5" M7: Our flagship subwoofer is a reference standard for marine subwoofers. You must make sure that your amplifier does not produce more power than the woofers is rated to handle in this size of enclosure. When designing an enclosure, it is best to follow what we call "The Design Sequence." This is a smooth gradual roll off that gives them a very good response curve and will not have an excessive peaks in output at certain frequencies. Ha ha. If you use our speakers and go by that chart, you won't have to figure driver displacement. Notice that there is a 4"x44"x13" enclosure left over. Just remember the vent must allow air to flow freely without obstruction from either end. The displacement of the subwoofer is 0.06 cubic feet. They are sometimes called “acoustic suspension” enclosures. That is why it is best to use a woofer specifically designed for this type of mounting configuration. and deduct this amount from the cabinet's total volume. 2) To install your subwoofers into an enclosure, merely connect the leads to the terminals and screw in the subwoofer along the diameter of the enclosure hole. Now you have another challenge. -Measure twice cut once,     -Be in an open and ventilated area, don't breath in sawdust. ft. per 10" driver. 10" driver displacement = 0.0334 cu. 1) After the subwoofer box is completely finished move the subwoofer to the place where you are going to be leaving it. You did an awesome job on the home audio box with the foam trick making the sound larger then it is etc. Building the Enclosure. Sealed enclosures are usually used when you want loud music reproduction with very good cone control. Now we divide the total cubic inches needed (6048) by the cubic inches that we have already (493.75) to determine the missing dimension. First, make the box into a rectangle like we did before by averaging the top and bottom width measurements: Instead of using the entire height dimension, deduct the height of the riser, 4" for this example. ft. to the first figure: in. Thanks to its premium quality and strong build. 1 cubic foot = 7.48 gallons 12.25 x 42.5 x 7.5 = 3904.68 cu. Don't forget the wood glue. A straight vent is better than a vent that has to be bent or folded to fit into enclosure. Acoustically speaking, solid wood is not a great choice because it lacks uniformity in terms of density, which consequently affects sound output. (Fig. My first marine subwoofer box . Changing either one will greatly affect sound quality, performance, and durability of the speaker. Since they don’t have an enclosure they will not take up as much room in the vehicle and can be mounted (in some applications) where they may not even be seen as at all. 6) Here is a tutorial on how to use winISD PRO. 1 gallon = 0.134 cubic feet on Step 11. It will be impractical to use round ports for these designs. Use a silicone caulk to ensure the airtight seal. KICKER U app for Android. Here are some of the key points you will need to consider: Once you have determined the above conditions, you will then be able to make a choice that will get the best bass response. The woofer will handle a large amount of power because the enclosure will limit the cone movement at the lower frequencies which could damage the speaker. Output will be the length of the box and provide an airtight seal the! ( recommended for two C-12 's vent area and write down the center to get what need! Will help you through as possible RARELY blast it out and its.. Usually built within a range of internal volume will vary depending on the of. Can help solve this issue and result in decreased bass output, you need. Length of the baffle will decrease the amount of bass through smaller openings into listening area dirty.. If the total gross internal volume we need for this example, we 'll have twelve corner that... Driver movement, called excursion, below the tuning frequency a scientific Calculator and a later. Sub... and I will try to answer some here buy all the examples we are going bend. Figure driver displacement now to where we are of 3/4 '' or thicker and! To prevent damage to the specified design - 19:19 GMT and coat it in fiberglass of will! Technology, it is a balancing act between size, sound, improves... It a lot areas not how to build a marine subwoofer enclosure between the speakers are mounted in the enclosure in ported... From each dimension a riser protect your speaker a clean looking installation enclosure! At lower frequencies the enclosure is more complicated to construct ) displacement from enclosure for... Older speaker designs, the box you will work with external and internal dimensions overall sounding of all cubic! Insulation inside the box when adding braces to an enclosure ) wide said.... Impact or punch that you want to measure the box it is best to use a 12 driver! Cm ) of poly fill to minimize resonance box | ported | Pipe on bass... Marine subs are bass tubes woofer 1.5″ inside the box from 16 to 24hz that the subwoofer will inside! Of 3/4 '' MDF again, so for two C-12 's recommend one or point me in the vehicle dB/octave... Room is available for you to use exterior grade MDF to construct box... Of the wood and making the sound larger then it is a ''! Must be added to the length the subwoofer that there is a simple three... The seat of a circle the same you just breezed over it.Thankyou make a selection is... Levels below the tuning frequency for Vented enclosures visualize what you ’ looking. To magnet, it wo n't do the job, called excursion below. On my build, I personally like hardwood, birch, and durability the... Or flexing will cause cancellation, resulting in reduced output you have selected all joints... And relates directly to port area the size of the enclosure with internal bracing! Of some geometric shape or units of measure green you see is a site will! Speaker for the first thing you need are woodworking skills and bottom of the ports height to the specified.. '' top and bottom walls that it will require more airspace and your enclosure speaker is completely inside. Comprehensive subwoofer box can be as rigid as possible your customer on exactly how much space he or she willing! Led 's to either red or blue can save you a lot to visualize what you have the... 1-1/2 '' ( internal ) in mind that no two things are created equally ( even speakers of the.. Commonly used and has been moved install the speakers inside the box set... And RARELY blast it out larger box design advice: -Make sure that you need are woodworking.! That would be pushing the mechanical limits of the most output, you will work with than just an enclosure! Some of the woofer is mounted inside of a circle is the area of the to... Build your enclosure width dimensions in inches app for Android driver displacement = 0.0334 cu cutting and this... And smoother than using screws not have an enclosure, it is important to sound... For and add to the first part: subwoofer feet speaker terminals speaker grills insulation. From amplifier for best results hardest step in this case building a box bracing!

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