Hearing Helper™ Personal FM
Hearing Helper™ Personal FM Receiver • Model PFM R31
Acoustic Specifications:
ANSI 2.44 Test
Receiver • Model
FM Response (PFM R31)
Input: | 80 dB random noise |
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Device: | KEMAR mannequin with BTK 3550 tester | ||
Y: | 80.0 dB 80 db | Main Y: | 34.1 dB |
X: | 100 Hz + 8 OCT LOG | Main X: | 4 kHz |
ANSI S3.22–1987 Test
FM Response (PFM R31)
Minimum Low Cut (Tone Set to Low)
Environmental Mic Response (PFM R31)
Input: | 80 dB random noise |
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Device: | KEMAR mannequin with BTK 3550 tester | ||
Y: | 80.0 dB 80 db | Main Y: | 50.2 dB |
X: | 100 Hz + 8 OCT LOG | Main X: | 4 kHz |
Maximum Low Cut (Tone Set to Hi)
PFM R31
Max. SSPL90: | 135.8 dB at 500 Hz | Max. SSPL90: | 133.5 dB at 1000 Hz |
HF Avg. SSPL90: | 127.1 dB | HF Avg. SSPL90: | 127.0 dB |
HF Avg. Full On Gain: | 37.7 dB at 60 dB in | HF Avg. Full On Gain: | 35.4 dB at 60 dB in |
Reference Test Gain: | 38.1 dB | Reference Test Gain: | 35.8 dB |
Response Limit: | 80.1 dB | Response Limit: | 78.01 dB |
| F1=200 Hz, F2=8 kHz |
| F1=200 Hz, F2=8 kHz |
Total Harmonic Dist: | 3.6 % at 500 Hz | Total Harmonic Dist: | 1.1 % at 500 Hz |
| 3.9 % at 800 Hz |
| 2.7 % at 800 Hz |
| 2.2 % at 1600 Hz |
| 2.1 % at 1600 Hz |
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Medium Low Cut (Tone Set to Mid) |
| Environmental Mic Response (PFM R31) | |
Max. SSPL90: | 135.5 dB at 600 Hz | No Tone Modification |
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HF Avg. SSPL90: | 127.1 dB | Max. SSPL90: | 134.8 dB at 500 Hz |
HF Avg. Full On Gain: | 36.8 dB at 60 dB in | HF Avg. SSPL90: | 126.4 dB |
Reference Test Gain: | 37.3 dB | HF Avg. Full On Gain: | 40.9 dB at 60 dB in |
Response Limit: | 79.4 dB | Reference Test Gain: | 40.8 dB |
| F1=200 Hz, F2=8 kHz | Response Limit: | 81.1 dB |
Total Harmonic Dist: | 3.4 % at 500 Hz |
| F1=200 Hz, F2=8 kHz |
| 3.4 % at 800 Hz | Total Harmonic Dist: | 1.1 % at 500 Hz |
| 2.2 % at 1600 Hz |
| 1.1 % at 800 Hz |
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| 0.3 % at 1600 Hz |
NOTE: SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE!
| ©2007, Williams Sound Corp. MCAT 005B | 2 |
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