Electra DNG 18 - Sound Level Characteristics

7-1
SOUND LEVEL CHARACTERISTICS
Revision Y05-01Service Manual - DNG Series
7. SOUND LEVEL CHARACTERISTICS
7.1 Sound Pressure Level
Figure 1. Wall Mounted Figure 2. Floor Mounted
Figure 3. Ducted Figure 4. Cassette
7.2 Soud Pressure Level Spectrum (Measured as Figure 3)
DNG 18 DNG 24
BAND CENTER FREQUENCIES, Hz
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.002 MICRO BAR
FAN SPEED LINE
HI
ME
LO
CONTENT