Dynasound PRO DS1042 User manual

A: 9300 S.W. Gemini Drive Beaverton, OR 97008 USA
T: +1 503.641.7287 W: www.biamp.com
1
INSTALLATION GUIDE
DYNASOUND PRO DS1042
SOUND MASKING SYSTEM
UNPACKING
The unit was carefully checked before leaving the factory. Inspect both the unit and its shipping container
for indication of improper handling. Report any equipment damage to the distributor immediately. If the
unit was shipped to you, notify the shipping carrier without delay and place your claim. Unpack the unit.
It is ready to be installed.
NOTE: When a control knob is set to OFF, it is at the 0° setting. To adjust the volume or equalizer con-
trol, you can move the knob either clockwise or counter-clockwise within a range of 0° to 359°. Using a
clock as an example, the 90° setting is at 9:00 o’clock, 180° at 12:00 o’clock, and so forth. If you turn the
knob from the 180° position to the 135° position (halfway between 90° and 180°), you have moved the
knob 45° counterclockwise.
DESCRIPTION
This model contains a digital masking generator, low pass filter, 25 watt amplifier, volume control, and an
equalizer control. The 70 Volt outputs consist of two phono plugs and one terminal strip.
INSTALLATION
As with any power amplifier, this unit requires proper ventilation for safe use as well as its own long-term
reliability. The DS1042 requires a free flow of cooling air on all sides as well as the top and bottom. Never
place articles such as books, etc. on top of the unit or against its sides. Never operate the unit on a soft sur-
face such as carpeting, etc. that may aect airflow on the bottom of the unit. Never operate the unit near a
heat vent or other heat-generating devices. The power amplifier relies upon its ability to get cool air.
CONNECTING & USING THE MASKING GENERATOR/AMPLIFIER:
1. Connect a 25 watt (or less) load to one terminal strip. 70 Volt output. The 70 Volt outputs consist
of two phono plugs. When you connect any masking devices to the phono plug and/or terminal
block, make sure that the load does not exceed 25 watts.
2. Turn all front panel controls to 0°.
3. Plug the DS1042 power cord into the outlet. Turn the Volume control (left control) clockwise until
you hear the masking sound coming from the first masking device. (The setting will be at about
135° on the dial.) It should be set very low so you can just hear it. The purpose of this is to make
sure that each masking device is operational.
EQUALIZATION
Set the volume control on the DS1042 unit to 90° and the equalizer (low pass filter) control to 0° (o po-
sition). Check all speakers to make sure that they are connected and operating properly. Make sure that all
ceiling panels that have been removed are put back in place if the installation includes plenum speakers.
FOR NEW SPACES
For 9 foot high, 1/2” to 3/4” thick mineral fiber ceilings with ceiling plenums that are reflective (no spray-
on or batt insulation), set the volume control indicator to the 85° position on the dial and the equalizer
control to the 120° position. For 1” foil-backed glass fiber ceilings with conditions as above, set the vol-
ume control indicator at the 75° position on the dial and the equalizer control to the 165° position.
If these design characteristics do not apply, contact Biamp for tuning assistance.

A: 9300 S.W. Gemini Drive Beaverton, OR 97008 USA
T: +1 503.641.7287 W: www.biamp.com
2
LOUDNESS LEVEL
The system can now be subjectively fine tuned for eectiveness 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 10° increments, until the desired loudness level is achieved.
EQUALIZATION
IF ASSISTANCE IS REQUIRED
Contact info: mail: [e-mail] or web: support.biamp.com
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
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 eective 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. Then 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 volume
control on the DS1042 unit to the 60° position.
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 10° 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 most desirable setting as determined above is met. If there are
objections about the masking level being too high, as the system is being raised to its final design, re-
duce the volume by 4 dBA (or 15°) on the volume control. Leave the masking level at this setting for two
(2) weeks, and then begin to adjust the masking level higher again as per the above technique until the
acceptable level is reached.
Dynasound is either a trademark or registered trademark of Biamp Systems, LLC in the United States and other countries. Other
product names referenced may be trademarks or registered marks of their respective owners and Biamp Systems is not aliated
with or sponsored by these companies. All specifications are subject to change.
Visit biamp.com for the latest specification information.