For more information, please visit
http://www.pbasystems.com.sg/products/voice-coil-modules/cvc-circular-voice-coil-module.html#314-series_bg_cvc
For enquiries on any of our products, email us at sales[@]pbasystems.com.sg or call us at +(65) 6576 6767
Youtube Video : http://www.youtube.com/watch?v=sGx-3YrZID0