Test Bench: The Wavecor WF152BD03-04 Paper Cone Midbass Woofer

This month’s driver on Test Bench, from high-end OEM manufacturer Wavecor is the WF152BD03/04 6″ midwoofer. This is another characterization from the Voice Coil archives. This 6″ paper cone midbass woofer, like the previously reviewed Wavecor WF120, highlights Wavecor Balanced Drive system design, a proprietary distortion reducing motor technology, which results in a more symmetrical Bl curve. This article was originally published in Voice Coil, December 2010.

In this article, Joel Hatch explains how to build a variable frequency synchronous motor controller to control turntable speed. Now that turntables are back in force, this excellent project not only allows some knowledge about a vital part of the motor's rotational speed adjustment, but it also dives into one of the most crucial aspects of a record player for anyone interested in a little DIY or restoration projects. This article was originally published in audioXpress, December 2010.