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lab recording, 18/8/1989, 25°C (Kenwood KX880HX with AKG D202, tape: M-MX90, tape no. KW08:20.00-25.00, microphone filter below 100 Hz) lab recording, 20/8/1989, 26.5°C (Kenwood KX880HX with AKG D202, tape: M-MX90, tape no. KW10:36.30-38.00, microphone filter below 100 Hz) |