Sound Level Characteristics; Sound Pressure Level - Electra delta 22 Service Manual

6.

SOUND LEVEL CHARACTERISTICS

6.1

Sound Pressure Level

Figure 1. Wall Mounted
Figure 3. Ducted
6.2 Soud Pressure Level Spectrum (Measured as Figure 1)
Delta 22
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
Hz, AND CE TER FREQUENC ES
FAN SPEED LINE
HI
ME
LO
SM DELTA 1-E.2 GB
SOUND LEVEL CHARACTERISTICS
Figure 2. Floor Mounted
Figure 4. Cassette
-70NC
-60NC
-50NC
-40NC
-30NC
APPROXIMATE
THRESHOLD OF
HEARING FOR
-20NC
CONTINUOUS
NOISE
CONTENT
Delta 25
Hz, AND CE TER FREQUENC ES
-70NC
-60NC
-50NC
-40NC
-30NC
-20NC
6-1