Dynasound, Inc. 6439 Atlantic Blvd. Norcross, GA. 30071 800.989.6275
LOUDNESS LEVEL. The system can now be subjectively fine tuned for effectiveness and comfort. If
the sound masking level is too high, turn the volume control knob counterclockwise, in no more than
fifteen minute increments, until the desired loudness level is achieved. If the sound masking level is too
low, turn the volume control knob clockwise, in fifteen minute increments, until the desired loudness
level is achieved.
Equalization
IF ASSISTANCE IS REQUIRED: CALL (800) 989-6275.
If a sound level meter is available, the following spectrums are recommended:
FREQUENCY 100 125 160 200 250 315 400 500 630 800 1000 1250
1/3 OCTAVE 47 46 45 44 43 42 41 40 39 37 35 34
ONE OCTAVE 51 48 45 40
FREQUENCY 1600 2000 2500 3150 4000 5000 6300 8000 1000
1/3 OCTAVE 32 30 27 24 21 20 17 14 11
ONE OCTAVE 35 26 19
control indicator at the 8:30 position on the dial and the equalizer control to the 11:30 position. If these
design characteristics do not apply, ontact Dynasound, (800) 989-6275,for tuning assistance.
OCCUPIED SPACES
If masking sound is being added to an existing space that is currently in use, THE MASKING MUST BE
INTRODUCED SLOWLY, so that it won’t call attention to itself. Therefore, once the initial installation is
complete, it will take weeks to bring the masking sound up to its recommended level for effective pri-
vacy. After tuning the masking as per the above procedure for unoccupied new space, record the final
settings for both the volume and equalizer controls. Indicate on the bottom of the DS1042 unit, with a
permanent marker, the recommended settings.
INITIAL MASKING LEVEL SETTINGS FOR OCCUPIED SPACES
If you have a sound level meter, measure the existing ambient background in several areas and record
the lowest reading. Now go to the DS1042 unit and set the volume so that the masking level is 2 dBA
above the lowest ambient reading that was recorded. If you do not have a sound level meter, set the vol-
ume control on the DS1042 unit to eight (8) o’clock.
RAISING THE INITIAL MASKING LEVEL SETTINGS IN OCCUPIED SPACES
After a continuous Monday to Friday cycle of non-interrupted masking at the initial setting, raise the
masking level 2 dBA or about fifteen (15) minutes on the volume control from the initial setting. This
increase in level must be done on Friday at the end of the work day after most of the employees have
left the building.
Continue this weekly increase until the final setting as determined above is met. If there are objections
