Hearing helper, Personal fm system, Model pfm 300 – Williams Sound PFM 300 User Manual
Page 3: Acoustic specifications: ansi 2.44 test
Hearing Helper
™
Personal FM System •
Model PFM 300
Hearing Helper
™
Personal FM System •
Model PFM 300
ADA
ADA
©2006, Williams Sound Corp. MCAT 003B
NOTE: SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE!
Acoustic Specifications:
ANSI 2.44 Test
FM Response (PFM R32)
Input:
80 dB random noise
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 R32)
Minimum Low Cut (Tone Set to Low)
Max. SSPL90:
135.8 dB at 500 Hz
HF Avg SSPL90:
127.1 dB
HF Avg Full On Gain:
37.7 dB at 60 dB in
Reference Test Gain:
38.1 dB
Response Limit:
80.1 dB
F1=200 Hz, F2=8 kHz
Total Harmonic Dist:
3.6 % at 500 Hz
3.9 % at 800 Hz
2.2 % at 1600 Hz
Medium Low Cut (Tone Set to Mid)
Max. SSPL90:
135.5 dB at 600 Hz
HF Avg SSPL90:
127.1 dB
HF Avg Full On Gain:
36.8 dB at 60 dB in
Reference Test Gain:
37.3 dB
Response Limit:
79.4 dB
F1=200 Hz, F2=8 kHz
Total Harmonic Dist:
3.4 % at 500 Hz
3.4 % at 800 Hz
2.2 % at 1600 Hz
Maximum Low Cut (Tone Set to Hi)
Max. SSPL90:
133.5 dB at 1000 Hz
HF Avg SSPL90:
127.0 dB
HF Avg Full On Gain:
35.4 dB at 60 dB in
Reference Test Gain:
35.8 dB
Response Limit:
78.01 dB
F1=200 Hz, F2=8 kHz
Total Harmonic Dist:
1.1 % at 500 Hz
2.7 % at 800 Hz
2.1 % at 1600 Hz