Over the last several years, Indonesian-based Sinar Baja Electric in partnership with Danesian Audio of Denmark (Danesian Audio was founded by of a team of dedicated Danish loudspeaker engineers, who have been working closely together since 1997), have generated an excellent reputation for the high-end home and car audio drivers that have been marketed under the SB Acoustics name. For This Test Bench, SB Acoustics sent Voice Coil the MD60N-6, a new 2.5” diameter soft dome midrange from its premium high-end Satori line
Features for the MD60N-6 include a non-resonant coated cloth 2.5” diameter diaphragm and surround, a 60.5mm diameter voice coil wound with round copper wire on a vented aluminum voice coil former. The motor system consists of large neodymium (neo) ring magnet with a low carbon content steel return. The device incorporates a dynamic dome stabilizer and flow resistor, which takes the form of a 1mm thick perforated dome-shaped aluminum grille that sits underneath the soft-dome (spaced 2mm to 3mm). There is also a damping pad mounted directly on the back side (covering its entire surface). This fires into the injection-molded back-closed transmission line enclosure that is filled with Thinsulate (acoustic/thermal insulation material). Other features include 95dB 2.83V/1m sensitivity, a machined aluminum faceplate, gold-plated terminals, braided silver Litz wire tinsel leads located on opposite side of the dome to minimize voice coil rocking, a 120W-rated power handling, 0.5mm Xmax, and a nominal 6Ω impedance.