Sound Level Characteristics - Electra DNG 18 Service Manual

7.

SOUND LEVEL CHARACTERISTICS

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