Ferrite is a ceramic material that's filled with iron particles. You can screw this one directly to the enclosure or to the crossover's circuit board. One advantage that this inductor has is an ease of mounting. The wire on this one is 16g and it's DC resistance is rated at 0.289 ohms. Many laminated iron core inductors have relatively low power ratings (their cores saturate easily) but this one (Erse Audio ESQ55-16-6800) is rated for 500 watts. The following inductor is a good quality laminated iron core inductor. Below, you'll see how having an air core inductor may not always be the best option. When this happens, the inductor's value changes significantly and this can be audible. Saturation occurs when sufficient power is applied to the inductor to push its core to its limits (much the same as driving an amp into clipping). When building crossovers, many people believe that the air core inductor is the absolute best because the core cannot interfere with the sound and an air core inductor cannot saturate. The air core inductor has slightly lower inductance (6.0mH vs 6.8mH) but the laminated iron core inductor and the ferrite core inductor have the same value. The following inductors are all approximately the same value. To increase the value with shorter lengths of wire, you can wrap the wire around a core made of magnetic material like iron or ferrite.
If two inductors have the same value (usually stated in millihenries, for those used with speakers) but one is wound with larger wire, the larger wire (all else being equal) will allow more power to be delivered to the speaker. This will ensure that there is little power loss in the coil and the power is efficiently transferred to the speaker. Ideally, the inductor should have very low D.C.
#Ferrite core inductor speaker series#
a coil or choke) in series with a speaker will block higher frequencies while having little effect on the lower (bass) frequencies. Setting the font size at 1 step larger than the default will also help if you want to view the site in it's original format. This will resolve most/all of those issues. Outside diameter is a tick over 4" and less than 1" thick, so it is a manageable size.If you have a problem with some graphics showing up as large open spaces, empty or black boxes, right-click the link in the directory for the page you're viewing and open the page in a new tab.
It is also the same number of layers as winds, so the coil is square in cross section AND I designed it to be wound on a standard size of PVC pipe, right from the home store. Run some 'simulations' My design for my panels new inductor? 14ga.up from 16, aircore and with a DCR within 5% of the original unit. Inductor calculators? yep.and plenty on line. And than only if you are a 'power user' and routinely crank it up. That is the best use of a new inductor.in the bass. Inductors in mids and tweets? much less important than in the bass where most of the power goes. 1db would be a large change in my panels.
#Ferrite core inductor speaker driver#
Changing the DCR will alter the crossover point.but usually not much AND change driver balance and perhaps voicing. IF the original inductor is iron core 16 or 18 ga in a fairly low sensitivity speaker, like my Magnepans, than you can get some headroom out of going to larger gauge wire as long as you consider the DCR of the new piece. If the original inductor is aircore, and larger gauge wire, don't bother. It's all about tradeoffs and the original inductor. If you want to try to make your own inductor to save money, check out the Inductor Calculator for information on winding your own coils. For the larger inductors required for the woofer's crossover, an air core inductor might not be feasible. For smaller inductors, use one without a core - an air core inductor. The problem is that these cores cause some distortion. This core decreases the amount of copper wire needed for the coil, and therefore lowers the resistance. Some inductors have iron or ferrite cores in the middle of the coil. There are also copper foil inductors which are more expensive, but work somewhat better. Using silver increases the cost another 20x's. Moving from 19g to 14g increases the price by at least 5x's. You can purchase a more expensive coil that uses a heavy gauge wire. One way to lower resistance is to use thicker wire. Copper is the only realistic material to use. Inductors are usually just a coil of copper wire, sometimes hundreds of feet long.