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There is a test of the 17 cm Görlich with rubber surrond in the new Hobby Hifi.

Very low fs (23 Hz) and low sensitivity (86 db). There is a clear surround resonance, so maybe it would be wise to wait for the announced models with cloth or foam surround. The membrane material seems to be really unique: The diaphragm has a resonance at 4-5 kHz that is also clearly visible in the distortion curves, but it is dead after 1 ms! BTW: It is a hard foam and the aluminium foils are just covers that are necessary because it is open pore.

There is also a test of the cheaper brother of the Magico Mini´s fancy looking midwoofer. It has a carbon/kevlar mesh diaphragm. The very low Rms indicates a low loss rubber surround, but is lacking surrond resonances. In the upper midrange the CSD is slower that the Görlich´s, however. From the distortion figures I don´t believe there can be anything wrong when used properly (as midrange!). Personally I have listened to the Veravox 5 highpassed with Shindo electronics, and I couldn´t find any tonal error, so I believe ATD definitely CAN build good drivers.

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