Eminence Designer maintenance release: 1. Eminence driver parameter update: Jan Technical note index. Contact us. You may need to experiment with the box volume Vb and tuning frequency Fb until a desired response shape is achieved. In the old days, designers were focused on various box alignment tables such as B4 maximally flat Butterworth or QB3 quasi third-order Butterworth , which allowed reasonably quick, hand-calculator based, calculation of desired response shapes.
Today, with the advent of PCs and design programs such as ED, it is possible within seconds to run though an entire spectrum of response shapes without the need to tie oneself down to a particular target alignment.
You, as the designer, can now evaluate and select from a multitude of possible response shapes. Be sure to practice first by running through at least a couple of the design examples contained in the manual, before you attempt any serious design of your own.
While system designs may be saved or printed, it is not possible to import any of the graphic plots as graphic files such as JPEGs. This and the fact that the graphics quality is Spartan in nature are my only quibbles with this otherwise fine program. An example of a system impedance graph is shown to the left. This is the load that the power amplifier must drive if the woofer is connected directly to the amplifier.
The impedance minimum at 81 Hz between the two peaks is interpreted as the box tuning or the system resonance of the enclosure. The context was the design of a vented enclosure for the Eminence Magnum 15HO woofer. The normalized anechoic frequency response predicted by ED is shown in the plot to the left. An interesting feature is the accurate portrayal of the woofer's on-axis beaming between Hz and 1kHz. This is the frequency range where the output of the woofer begins to transition from being non-directional to a narrower radiation profile.
The reason for the enhanced realism is the inclusion of actual frequency response data in the Eminence driver library to augment the low-frequency roll off predictions of the model. Think of the displayed response as a more accurate prediction of the anechoic system response.
With LEAP 5. In fact, it could be said that the calculated anechoic response given by ED is more accurate in the case of Eminence drivers because of the inclusion of actual high-frequency response data.
In the U. Eminence provides this list as a service to our customers, but does not guarantee that the companies listed offer original replacement parts or provide a specific level of service. We do not recommend the Kilomax 18 for most "traditional horn" or scoop boxes because it has a very high moving mass Mms , a long coil, and a high Qt. Most "traditional horns" such as "W" boxes require a driver with a super low Qt and a light Mms; the Omega Pro 18 is the best choice for older style horns, W-bins, and scoops.
The Kilomax is more suited for reflex boxes or "modern horns" by which we mean ones that are designed per Leach's horn design equations. The cone is strong enough for traditional style horns, Leach style horns, Reflex designs, sealed designs, and bandpass enclosures.
It is the motor of the Kilomax that is not well suited for traditional horns or scoops. Eminence Speaker, in conjunction with Harris Technologies, has developed a computer software box design program called "Eminence Designer" to help customers design their own boxes.
All of the Genuine Eminence speaker parameters are already loaded into the program, but you can use it for any speaker for which you have parameters. The reference section is tremendously helpful and informative. For more information, click here.
We offer a demo of Eminence Designer for you to try. If you are interested in purchasing, please contact one of our distributors. To assist our customers with box designs, we have also included recommended box designs for all of our PA, bass guitar, and acoustic guitar speakers. You will find these designs under the Downloads section on this website, as well as on each speaker's detail page.
You cannot hear the driver distort when you push them too hard. So, most people do not know when to turn them down. They push them till they break. It takes a while to get used to the extra clean sound of this cabinet and learn how hard you can push it. They were designed to be used in groups of 4 to 6 cabinets to get the desired SPL at very low frequencies below 45 Hz.
A lot of folks are running them as singles and trying to EQ the bottom end to get more low bass output. This pushes the drivers past their safe operating range very quickly.
If you need a lot of very low bass, use more cabinets. When one driver quits working, the other driver will fail as well because they both fire into a common high pressure cavity.
The user needs to look on the drivers as a single more expensive driver. You always need to use two, so buy two. Air leaks will kill the driver. The driver has a VERY loose suspension and requires that the small chamber behind it be absolutely air tight.
Care must be taken to get that chamber sealed and keep it sealed. Before every show, check all the screws that keep the cover on as they may work loose and cause a leak. You must use a high pass filter set to 35 Hz and that has a slope of at least 24dB per octave to realize the real potential of the design. Many people are using huge power on these cabinets day in and day out, but they are the ones who run steep high pass filters on them.
If you don't see your speaker listed on our website, then it is one that we "custom-made". Until January when we debuted our own "Genuine Eminence" distribution line, Eminence Speaker only made custom designed speakers for companies who loaded them in cabinets or sold them as "raw" drivers. We don't assign model numbers to custom speakers.
All of our OEM speakers are identified by their spec number. We attach a small label to either the side of the magnet or the inside one of the basket arms with our spec number and manufacturing date code on it. The spec number will begin with the size of the speaker i. The "67" tells you that the speaker was built by Eminence, the "01" indicates that the speaker was built in , and the "12" means it was built the 12th week of the year.
Just email the spec number to info eminence. Please include either your email address or fax number. Our fax number is Outside of the U. Yes, if you wanted an 8 ohm version. An "A" after a Genuine Eminence model number denotes an 8 ohm version of that speaker, "B" denotes a 16 ohm version, and "C" denotes 4 ohm. We can't sell any speakers that were custom-made for another company except to that original company. You must contact them directly for replacements.
Even if the company is no longer in business, we never stock any OEM speakers and do not have any available for sale. However, there might be a suitable replacement in our Genuine Eminence line. Just email us at info eminence. When a speaker is labeled 8 ohms, it is actually a nominal reading. An ohm meter measures the resistance to direct current DC , but music is alternating current AC. A speaker's impedance to AC depends on frequency and the nominal rated impedance is sort of an average impedance over the usable frequency range of the speaker.
You will find that a 8 ohm speaker will be between 5. Yes, you should match up your impedances. One reason is that you will get maximum transfer of power. The other reason is that you can sometimes approach unsafe and dangerous conditions. When in doubt, it is safer to go higher in impedance to help protect the amplifier.
We label our terminals so that when a positive DC voltage is applied to the speaker's positive terminal, the cone will push out away from the magnet. Generally speaking, the positive terminal is usually on the left when the speaker is facing up. On our neodymium models, this is opposite. In case you are not well familiar with these parameters, go to the aforementioned link.
As you enter these parameters, it evaluates Optimized Sealed Profile and shows the calculations on the interface in real time. In addition, it displays EBP i. Efficiency Bandwidth Product value to let you know how well the driver is suited to a port enclosure.
It also lets you find custom alignment profile by entering internal box parameter volume, tuning, port diameter, etc. The frequency response graph is also shown on the interface. It provides a tool named Box Planner which lets you design optimized boxes Greek, Z-Norm based on required dimensions and volume.
A Volume Tool is also provided to calculate volume. Box-Port Design is a nice and easy to use speaker design software. As you hover mouse over a function or parameter, it displays respective description so that it is easier for you to understand.
It also comes up with a unit conversion tool. Torres Box Tuning Calculator is another free speaker design software for Windows.
It lets you calculate box and port dimensions for audio speakers. The software is pretty intuitive as its main interface contains all input parameters and output calculations. You need to just enter box dimensions heights, width, depths , port dimensions number of ports, height, width, depth, diameter , and other values including number of extra baffles, displacements woofer, bracing , length of external port, baffle thickness, port thickness, and number of common port walls.
You can also select wood thickness and enter desired gross and net volume. As a result, it shows cut sheet and box stats in real time. The box stats contain values of gross volume, port volume, physical port length, port bends, baffle displacement, port area, port area per foot, port ratio, net volume, and tuning frequency. The calculation formula is also displayed on the interface.
The unit used for calculations can be millimeter, centimeter, or inches. You can also change the view of background, labels, and output boxes by changing respective colors. Boxnotes is a free speaker enclosure design software for Windows. It finds out exact box dimensions to design speaker cabinets.
You can use its Min button to select a speaker with minimum dimensions. It provides various arrangements of speakers such as Single 12 inch driver in a box, Twin 12 inch driver in tower box, Quad 12 inch drivers in a square arrangement, etc.
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