![]() If we increase the electro-mechanical coupling factor BL, we will notice a rising response characteristic with frequency. Since changing the cone mass would mean altering the timbre of the driver the only option is to change motor strength. Output in this region is influenced primarily by mass of moving assembly (cone, voice coil, surround, spider, dustcap etc) and the strength of the motor. However, in this horn, the midrange above 400Hz is not very detailed and asked if somehow a field coil motor can spark some life in that band. ![]() Someone has a pair of JBL 2220H which he loves and uses them in a Front Loaded Horn. It will never demagnetize and it can offer other advantages such as adjusting the motor force for specific applications. ![]() In these cases converting the motor to a field coil motor can be a very sensible solution. Revitalizing these magnets can be very hard, it is for sure not something a DIY-er can do. This is true especially with Alnico magnets since they are prone to demagnetization. There are many vintage drivers that posses a great timbre, used in many legendary speakers but after many years their motor is demagnetized to a point that they lost their output and the impact on midrange and high frequencies.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |