Superlux S502 MK2 test, teardown and improvements

Hi All, based upon some ideas Reiner mentioned i decided to buy a Superlux S502 MK2 from Thomann (147€). It is a ORTF based stereo mic with 20mm capsules. The capsules are obviously interchangable with Schoeps SDC capsules. I am very curious how these capsules perform. This is the plan: 1. Measure frequency responses on axis, 45°, 90°, 135° and 180°, gives sensivity automatically. 2. Measure capsule capacitance. 3. Measure noise performance (both capsule noise and noise of electronics with... Read more