70 Volt Sound Masking Systems
70 Volt sound masking systems have been a professional approach to commercial sound masking since the mid-1970s. Even with the development of networked sound masking systems, centralized systems are often still a good choice in some workplace environments. Centralized systems provide manual per-loudspeaker volume control, hard wired zones and cannot be reconfigured via software as with a networked system.
70 volt sound masking systems are well suited to environments having uniform acoustical conditions and basic paging requirements. Loudspeakers are “daisy-chained” together into hard wired zones using standard two conductor audio cable. All loudspeakers in a given zone receive the same audio signal. Loudspeaker mounted volume controls provide adjustment on a local basis.
Sound Masking Generators/Mixers/Amplifiers for 70 Volt Systems
The DS1042 features a digital masking generator with adjustable volume and low pass filter for tuning. A 25 watt amplifier provides power for up to 25 loudspeakers, or approximately 6000 square feet.
The DS1092 features digital masking generator with adjustable low pass filter for tuning. The DS1092 incorporates a mixer to introduce paging and music signals into the system. A 40 watt amplifier provides power for up to 40 loudspeakers, or approximately 10,000 square feet.
The DS3008 masking/paging processor features four independent digital masking generators, eight balanced line level inputs and outputs.
The DS3002 has the same internal DSP as the DS3008 but with 2 balanced line level inputs and outputs instead of 8.
For use when either DS3008 or DS3002 is the generator for a 70 Volt System.
- Selectable 80Hz 2nd-order Hi-pass filter, limiter, and input gain per channel
- Remote DC level control per channel
- Extensive protection circuitry, continuously variable cooling fan
- Euroblock input connectors • Euroblock loudloudspeaker connectors
- Detachable AC mains line-cord connector
- Safety/Compliance: cTUVus (pending), CE, FCC, RoHS
- 1 rack unit
Zone level volume controls provide precise 1.5 dB changes in level.
QC10 Wall Mount Attenuator
The QC10 is a UL Listed, single-gang, 20W, ten-step, continuous rotary, audio level attenuator with an OFF position. Brushed, stainless steel faceplate with embossed positions and a black knob with a white indicator mark.
DS2022 Air Grill Cover
The DS2022 return-air grill attenuator is designed for quick and easy installation into ceiling return-air grills in 2×2 suspended ceiling grid systems. The DS2022 is used to acoustically treat open return-air grills for sound masking uniformity by attenuating the amount of sound that can pass directly through.
Dynasound manufactures sound masking loudspeakers for every application including loudspeakers designed for use in open structure and above suspended ceilings, below raised access floors and in direct field applications, where appropriate.
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DSSSB-4 Optional bridge mount for the DS1398 for use in ceiling plenums