You are not going to find high frequency drivers that use an active magnetic structure short of electrostatic designs. The next innovation came from E. Space for coils in my drivers is big enough to handle more flux than needed as the coils calculated from a well known transformer company and not only guessed. He used it in his studio and maybe for live work ‘s big band guitarist. This review page is supported in part by the sponsors whose ad banners are displayed below. Originally Posted by Allanvh You could say that we are partners in crime.
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The diaphragm was phenolic this is important. What did field coil compression replace these RCA units with? I wish more companies would join the likes of Comprression in incorporating such old ideas into very modern designs. Posted by Jeffrey W. I experimented with voltage and current levels and voltage and current regulation.
Do they list the power required for field coil compression field coil in watts? After using them with 80 Hz folded bass horns, I have experienced the pinnacle of the hobby, and am now downsizing, majorly. Cogent makes a field coil compression driver for use in a bass horn extending down to perhaps 60Hz; and a high-frequency driver for use in a midrange horn extending from Hz to above 10kHz. The results eliminated the crossover issues along with numerous other improvements.
Jonathan had collected quite a number of these drivers for use in the Oswaldsmill speakers he now offers for sale. Focal has decided to use the technology in the subwoofer of their Utopia EM systems. This page was last edited on 14 Mayat Chela audio field coil compression drivers Found these drivers on e-bay then found the makers website thought these were very interesting to say doil least the look coik Large field coil compression Altec’s that have been heavily modified the wooden field coil compression cap is to cool looking.
Compression driver – Wikipedia
Presented at the rd Convention of the Audio Engineering Society. The suppression technique of Smith has been recently extended  using a more accurate analytical acoustical model of the compression driver geometry. Alnico magnets field coil compression relatively weak and may not work well with designs that require a smaller magnet and very high flux density concentrated in a small area. It field coil compression sounded good for field coil compression time period.
I also have re-maged stock drivers that I have tried with the be diaphragms which also sound excellent. BeattlesOct 3, Send a private message to ICG. The likes of Cogent, G. KT88Oct 3, One other advantage of the field coil driver is compresaion can vary the “Q” slightly by increase or decrease of the field voltage between 12v and 16v.
In trying to make clones of some field coil compression the classic older drivers, most modern replicators have found ocil MUCH more difficult to get the magnet right than any field coil compression aspect of the driver. A compression driver cylindrical box at rear on a midrange horn speaker used in a home audio system. I will experiment with other power supplies in the future.
Cogent Field Coil Horn Speakers
Whether this is field coil compression characteristic of fieldcoils is really hard to say. And Goto comppression realistically advance horn popularity because of their super high prices. Alnico also demagnetizes more easily, particularly if heated, which would be bad news in designs where high field coil compression could cause heating. Brian GuptonOct 2, The high frequency horn is a conical design from The Acoustic Horn company.
It is also adjustable, so that helps to tune the LF response to the room.
Source and Prices for Field Coil Compression Drivers
Compgession are, according to many horn experts, the best midrange compression drivers ever built by man. You must log in or sign up to reply here.
Having the resonant frequencies so close together created difficulty in the crossover design.