AES Convention Papers Forum

Application of Static and Dynamic Magnetic Finite Elements Analysis to Design and Optimization of Transducers Moving Coil Motors

Document Thumbnail

Transducer motors are potential source of nonlinear distortion. There are several nonlinear mechanisms that generate nonlinear distortion in motors. Typical loudspeaker nonlinear models include the dependence of the Bl-product and the voice coil inductance Lvc on the voice coil position and current. These effects cause nonlinearity in the driving force, electrodynamic damping, and generate nonlinear flux modulation and reluctance force. In reality, the voice coil inductance and resistive losses depend also on frequency. To take these effects into account the so-called LR-2 impedance model is used. The L2 and R2 elements are nonlinear functions of the voice coil position and current. In this work detailed analysis of a nonlinear model incorporating these elements is performed. The developed approach is illustrated by the FEA-based design and optimization of a new JBL ultra-linear transducer to be used in a new line array system.

AES Convention: Paper Number:
Publication Date:

Click to purchase paper as a non-member or you can login as an AES member to see more options.

No AES members have commented on this paper yet.

Subscribe to this discussion

RSS Feed To be notified of new comments on this paper you can subscribe to this RSS feed. Forum users should login to see additional options.

Start a discussion!

If you would like to start a discussion about this paper and are an AES member then you can login here:

If you are not yet an AES member and have something important to say about this paper then we urge you to join the AES today and make your voice heard. You can join online today by clicking here.

AES - Audio Engineering Society