User guide

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ACOUSTIC SPECIFICATIONS
Typical values (ANSI S3.22-1987)
Lightweight headphone, HED 021: (with 6cc coupler)
Test Tone High Tone Mid Tone Low
SSPL90
124.3 dB 124.8 dB 124.8 dB
HF Avg (SSPL90) 120.7 dB 120.6 dB 120.5 dB
HF Avg full on gain (50 dB) 46.9 dB 44.9 dB 41.0 dB
Ref test gain 43.7 dB 43.6 dB 41.5 dB
Wide range headphone, HED 026: (with 6cc coupler)
Test Tone High Tone Mid Tone Low
SSPL90
121.4 dB 125.3 dB
124.8 dB
HF Avg (SSPL90) 119.5 dB 120.7 dB 120.9 dB
HF Avg full on gain (50 dB) 45.6 dB 44.8 dB 41.2 dB
Ref test gain 42.5 dB 43.7 dB 41.7 dB
Mini earphone single, EAR 013: (with 2cc coupler)
Test Tone High Tone Mid Tone Low
SSPL90
123.8 dB 124.0 dB 123.2 dB
HF Avg (SSPL90) 118.7 dB 118.6 dB 118.6 dB
HF Avg full on gain (50 dB) 44.7 dB 44.2 dB 38.9 dB
Reftest gain 41.7 dB 41.6 dB 39.2 dB