Dayton Audio RSS390HF-4 15" Reference HF Subwoofer 4 Ohm Part # 295-468 As I recall, in a sealed box it needs about 5 cu ft and in a ported box it needs about 10 cu ft. Attached are pics of the construction process for my two 20" diameter by 4' high sealed sonotube subwoofers. Truth be told, it runs a little bit hot and I’d consider something else if I were making this design again. In the upward position, I get clean omni directional bass which sounds fantastic when listening to P.I. Inside the cabinets I discovered there was a 10" subwoofer and a little tweeter, with no crossovers at all !!! Where if you listen closely, you can practically hear the sound of the bass player’s fingernails on the bass string windings. A ‘crisp’, ‘clean’, ‘dry’ sound. After completely covering the tube in veneer, I used a utility knife to trim the edges. A close-up of the base plate with new 4" legs. This part of the end cap consists of two MDF layers. Very deep, smooth and far more detailed bass than I had with the sealed boxes. For a ported design the non-bass boost is recommended. Hi All, I'm a new member and most interested in tapping what is evidently a great deal of expertise in all things audio. Continuing with my speaker projects; I have finished building a Sonotube subwoofer for my Box One speakers. It sounds great and I feel like my subwoofer now matches the quality of the other speakers I am using. This is a 1/4" x 2" bolt inserted on the inside. It is the simplest enclosure and will be the easiest to get right. With the tube just lying on the floor I did some listening. I lucked up and was able to I picked up 2 sheets of 3/4" MDF (24"x49") for the endcaps, the bonus being they were pre-cut and fit in my lil' Honda Civic with the rear seatback folded down. Each sonotube is capped with a 15" TC-2000 driver and will be powered by a Behringer EP2500 and DCX2496. The results were stunning. The base plates are the same size as the end cap outer layer. But subjectively, though there was an increase in the quantity of low bass, the quality of what was present was degraded. I found a driver that will work well with a sealed enclosure. The displacement of the subwoofer is 0.06 cubic feet. The base plate has had its leg length increased from 2" to 4" to provide additional clearance for air displacement without exerting pressure back on the driver. DIY Speakers and Subwoofer Projects. I switched to using the router outside in the driveway because of all the dust being produced. I am planning on building a downward firing, sealed sonotube subwoofer of approximately 1.8 cu.ft. The bottom driver installed and legs ready for base plate. The screw heads are flush with the base plate and little rubber feet cover them. You can choose from single, dual, and triple slot subwoofer enclosures to house your subs. Car Audio Subwoofer Enclosures. It's a very useful multi-platform program that's also available for free although donations are welcomed. The Broadcast Electronics STX-5 transmitter, Ye Olde Pioneer Magnetics PM3329BP-5 power supply, Driver: Dayton Audio RSS265HF-4, 10″ subwoofer, 4 ohm, 12″ (30.48 cm) diameter sonotube, 19 3/4″ (50.165 cm) long, Miscellaneous pieces of wood, paint, screws and foam that were laying around. However, brass bolts are easily found up to 4" in length at Home Depot. The driver's screw pilot holes need to be drilled. It was a popular one and used by many folks. You can see the wood glue that dripped down while drying. If you want to build your own box, using these blueprints can help you do your job quick and perfect. MDF layers are glued together using wood glue. It is the simplest enclosure and will be the easiest to get right. Another detail is whether or not the driver can be mounted horizontally. Each sonotube is capped with a 15" TC-2000 driver and will be powered by a Behringer EP2500 and DCX2496. It looks like you have quite a few options available to tweak it. Two layers of 3/4" MDF glued together and clamped. I now have a bit of a dilemma; should I set the subwoofer up downward firing into the floor or should I set it up upward firing into a dispersion cone? The VTF series subwoofers are the most adjustable subwoofers in the world. From the SonosubV2.03 calculator using a 24" diameter sonotube I am getting 27 3/8" height, 3" diameter port 1 1/4" long. Two sealed 20" diameter subwoofers with four total 15" drivers. A sealed subwoofer is the easiest to design and build and is a good place to start, especially for a first time effort. Sonotube subwoofer foam lining inside of sonotube. For sealed the bass boost is needed. Our Sound Experts are available 7 days-a-week to help you choose the best powered subwoofer based on your personal set-up and listening preferences. The plate amp is a run of the mill 70 watt Dayton unit. Sonosub driver, Dayton Audio RSS265HF-4 4 ohm aluminum cone driver Sonotube subwoofer foam lining inside of sonotube. The base plate attached to the subwoofer. I found a driver that will work well with a sealed enclosure. I made up for this by using a Polk Audio PSW-10 subwoofer that was part of my home theater system. As the majority of cylinder subwoofers are made in America of cardboard tube with the sonotube brand name, a subwoofer made in this way is commonly known as a sonosub. The multimeter is there to ensure the circuit is good, as any bits of wood or a non-flush contact will render the subwoofer useless. Photos of the two sealed sonotube subwoofers I built. There are several choices for the type response the designer is looking for. The outer layer is slightly larger in diameter as it must not fall inside the sonotube. Chuck, the cross over is built into the amp. Get help for the Speaker Volume Calculator Use the Speaker Box Designer to determine the correct Speaker Box Volume for Your Driver Use the Driver Displacement Calculator to Determine the Displacement for Your Driver Read the Speaker Box Design Tutorial × Close However, it doesn't hurt that much, and some of it will fall out as construction continues. The base plate attached to the subwoofer. Dear Hsu Customers: We hope all of you are doing well. On 9/26/2019 at 6:01 PM, Coytee said: Im personally of the opinion that the louder (visually) the Khorn is....the better. The inside half of the binding posts are brass bolts. No one makes binding posts that are long enough to go through three layers of MDF. I also picked up 2 sheets of 1/4" plywood (24"x24") to be used so that the t-nuts have something to hold on to for the inner endcap. I found the PSW-10 was certainly loud enough, but lacked definition which became noticeable when the new speakers where installed. 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