4 inch 8 ohm midrange speakers boxes
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Sundown Audio NeoPro 10 V2 8 10" 300W 8-Ohm Midrange Speaker
This example of a designing a speaker box makes use of many of the calculators found on this site. You should also review the Speaker Building Guide for additional help. For this example, I picked 3 ScanSpeak drivers for a 3-way speaker - the same 3 used on the Crossover Tutorial. These 3 drivers might be smaller than what is expected of a typical 3-way system. The mid is 4" and the woofer is 6. The drivers I chose with specifications provided by the manufacturer are:.
We will first use the Sealed vs. Ported Speaker Box Calculator to determine if a sealed or a ported enclosure should be used. The Sealed vs. Ported calculator uses the formula below. The tweeter in our example is already sealed and doesn't require an enclosure. The EBP of our midrange and woofer drivers are calculated as:. Both values are well above 90 and call for Ported Enclosures.
To keep this example interesting, I am going to ignore these results and use one sealed enclosure and one ported enclosure to show the differences between the two. A sealed chamber will be used for the mid and a ported enclosure for the woofer. We will use the standard. Calculating box volume and port size for a ported enclosure requires Vas, Fs, Qts, and the cone diameter.
To calculate the speaker box volume, we will use the Speaker Box Designer. The sealed box midrange driver gives us:. Remember we should have been using a ported enclosure for this driver. The speaker itself is only 4" round. If we go with a minimum 4" x 4" box the smallest the speaker will allow , then the box can only be about 3" deep - But I am of course ignoring the space taken up by the speaker itself and the internal bracing. Also, these are internal dimensions.
The thickness of the wood will make the box larger. ScanSpeak doesn't provide driver displacement information, so we will use the Driver Displacement Calculator. We will use the diagrams provided by ScanSpeak to enter numbers into our Displacement Calculator. The Displacement Calculator is a best guess to the displacement of the speaker driver. It is not exact, but the more information you provide the better it will be.
We will use mm as the cone diameter - not the mm diameter of the outer metal edge of the driver. Mounting depth is Magnet height is not provided, so we measured a value of 30mm assuming this drawing is to scale. If we had the drivers in hand, then we could measure them to be sure. Now we are ready to use the Speaker Box Enclosure Volume Calculator to determine the outer dimensions of the speaker box. Also be sure to read the Help for the Speaker Box Calculator. To use this calculator, we enter a speaker diameter of 4", the Box Volume 0.
Now it is up to the user to adjust the width, height, and depth of the speaker box until the volume is. The width and height of the box must be at least 4" to make room for the speaker itself. We are going to use 7" as the width here so that the same box width will also work for our 6. The Speaker Box Volume Calculator also provides the size of each panel of the box.
We will not use this information as we will be building a single enclosure for all 3 drivers. Now for the woofer. When using the ported speaker box calculator, the driver size Effective Cone Diameter - D is only used to determine port width. Using the Speaker Box Calculator for the ported box for the woofer gives us:. Our calculator gives us a. Note: The port is given in both standard and metric units. These numbers are not the same. The port length is calculated twice. Once for a port exactly 2" in diameter, and one for a port exactly 5cm in diameter.
The assumption is that you will be purchasing an off the shelf port that only comes in nominal sizes. Again, we don't have the woofer driver displacement, so we will use our calculator to estimate it. Here is the ScanSpeak diagram. So we need a We want to keep the driver width the same 7" as the midrange speaker as above, so the additional volume will come from increasing the height and depth. The next step is to decide on the general size and shape of the speaker box.
Some possible options are shown below. The box volume for these drivers allow for a bookshelf style speaker, but for this example a floor standing speaker will be used instead. Note: It is not required to use the entire speaker box for the driver enclosure, so the outer dimensions of the speaker itself can be as large as desired.
From left to right: A bookshelf speaker A floor standing speaker The side view of the same floor standing speaker. Note: the woofer will be ported in all of these design options, even when it isn't shown. Notice that the chamber for the midrange driver isn't the full depth of the speaker. Side view of an alternate design where the speaker is angled back.
In an ideal speaker configuration, the back of each speaker cone lines up vertically. Another side view alternate configuration. In this design, only the front board is angled. The math in calculating chamber volume gets a little more complicated, but the build may get simpler with having only one angled side.
There are also less balance problems. This design also leverages the fact that the top chambers are smaller our midrange chamber needs to be small so that the mid chamber can extend to the full depth of the speaker.
In the final configuration there are two 6. Two woofers could be used to help with the fact that the woofers have lower power handling than the other drivers in this system and two woofers will also help in the low end frequencies. Adding a second driver doesn't simply mean you should double the box and port sizes.
It might be a good starting point, but experimentation would be required to achieve the desired result. Without adequate testing equipment, you would be better off sticking to a simpler system unless you were following the published design from someone else.
Stay away from perfect cubes when determining speaker dimensions. The width, height and depth should not be the same value. It should be OK if 2 of the numbers are near the same value. Account for the size of the internal bracing and speaker driver displacement when determining the size of each chamber - again not a problem because our calculator does this for us.
Account for the size of the crossover when determining the size of each chamber. Since this speaker has an unused chamber at the bottom the crossover will go there. For some tips on the box construction, see the Speaker Building Guide. For help in designing the crossover, see the Crossover Tutorial and Crossover Guide.
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Loudspeaker
Big speakers might give you the meatiest sound, but not everyone has the space, budget or inclination for a set of floorstanders. They're known as bookshelf or sometimes standmount speakers. And as the name suggests, they're small enough to fit on a bookshelf, on stands, on a desk or a table. But a bookshelf isn't necessarily where you should put them. Some speakers demand a bit more space in order to perform at their best, so make sure you check the manufacturer's recommendations before buying — all of these speakers will benefit from a dedicated pair of speaker stands. And of course size is another consideration, as some are considerably smaller than others - when you do your research, see what fits your space. Here are our favourite bookshelf-friendly speakers.
How to Build Custom Speakers
This monster midrange handles up to w RMS and w maximum power. A frequency range of 90hz to 10khz will ensure you get the most out of your frequency range, so you hit all your desired notes with ease. These speakers are a very good selection for someone who wants a little mid bass and very precise voice through their 8-inch speakers. These give amazing crescendos and very solid rock bottom notes. They come with non-pressed paper cones and steel pressed frames that hold a 30oz ferrite magnet. These are very solid speakers that will make even the most advanced audiophile smile. Model PRO-X8. This monster midrange handles up to w Our engineers
FSX65 | 6.5" 300 Watt Mid-Range Loudspeaker
This example of a designing a speaker box makes use of many of the calculators found on this site. You should also review the Speaker Building Guide for additional help. For this example, I picked 3 ScanSpeak drivers for a 3-way speaker - the same 3 used on the Crossover Tutorial. These 3 drivers might be smaller than what is expected of a typical 3-way system.
China 4 inch speaker box
JavaScript seems to be disabled in your browser. You must have JavaScript enabled in your browser to utilize the functionality of this website. Customer Service: Be the first to review this product. Email to a Friend. Most Pro style speakers are designed for ported boxes as they are re-purposed "club" or "DJ" style speakers.
Pre Fab Speaker Boxes
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Compare Clear All. Contamos con una amplia variedad de marcas y Page 1 of 3 - The rebuildRound 2. Again, close to 4x the rating of wrms 4 ohms that American Bass gives them.
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User Name Stay logged in? So you want to design your own speaker from scratch! You have been doing this DIY speaker thing for a while, probably built a couple of proven designs from people like Zaph , Troels Gravesen, Paul Carmody or any number of other successful designers. There are many different design philosophies, and it is not my intent to try and cover them all, though where appropriate different directions may be suggested. I am an advocate of simulation as part of the design process so later posts will feature this, but even if you don't want to simulate hopefully you will still find the thread useful.
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