Sound Masking System

Lowell Rack Power Audio

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GSA No. GS-07F-9239S



Sound Masking Schematic

Sound Masking for Speech Privacy Photos of some of our work

Convert your existing Paging System into a Soundmasking System with the following AVL components
( Scroll Down for additional sound masking product )
Model MG24ASP
$ 1,075.00

Owners Manual

Model MG24ASP Masking Processor - 1RU, 6 Input x 4 Output DSP Configurable by a Very Intuitive Set-Up GUI, Dedicated 1/3 Octave Filter Sets are Available for Each of the 4 Generator Outputs, 8 Band Parametric EQ Blocks Along.

The MG24ASP advances sound masking control to a whole new level while providing the secondary benefit of loudspeaker processing. Our Model MG24ASP is 1RU, 6 input x 4 output DSP configurable by a very intuitive set-up GUI. Four inputs are tied to independent white/pink noise generators with adjustable ramp-up to allow gradual acclimation to masking levels. Two additional inputs are available for mic or line sources to allow paging and/or music sources to be blended with the masking sources to any of the 4 outputs. Dedicated 1/3 octave filter sets are available for each of the 4 generator outputs, 8 band parametric EQ blocks along with dynamic control is available for each of the two mic/line inputs. Any mix of all 6 inputs may be easily matrixed to the 4 output DSP blocks for additional parametric equalization, delay, and limiting (if required). Factoring in all features, a very complex 4 zone sound masking system can be easily configured with 2 external music or page sources. The optional MGTDB internal plug-in module is also available for the MG24ASP to allow timing and level control of all outputs for holiday and weekend scheduling. For loudspeaker control functionality, the MG24ASP may be configured in 2 input x 4 output mode for stereo full range. Other configurations include full range plus sub operation with our FAP ceiling speakers, SM series surface mount speakers, or AH series stadium horns for complete control of crossover types, equalization, delay and dynamic control. Computer interface is simplified by USB, RS-232 and Ethernet connection (no hard to use USB to Serial adaptors required!). External UL listed international voltage power supply is included.
Our MG24ASP DSP architecture is equally suited for complex masking systems and for control of our full range speakers and/or subwoofers.
The intuitive MG24ASP set-up GUI is designed to simplify even complex setups that utilize multiple sources plus masking in the same zone.

Easy downloads from the MEQ Masking Program make system tuning a breeze.


Model MG24ASP
Product Type Masking Processor/ Loudspeaker Controller
Input Impedance Line 10k Ohms, Mic
Output Impedance 50 Ohms
Max. Input & Output Level +20dBu
Frequency Response 0.1dB (20 to 20kHz)
Dynamic Range 115dB typical (unweighted)
CMM > 60dB (50 to 10kHz)
Crosstalk < -100dB
Distortion 0.02% (1kHz @+4dBu)
Processor 32-bit (40-bit extended)
Sampling Rate 96kHz
Analog Converters High Performance 24-bit
Propagation Delay 3ms
Power 115V 20W UL Rated External DC Power Supply
Weight 13.2 lbs / 6 kg
Dimensions 19" x 1.75" x 8" (483 x 44 x 203 mm)
AVLELEC Computer Model SMG-3001
DSP Sound Masking Generator w/ Event Scheduling

The MG3001 represents the latest technology in digital signal processing (DSP) engines for sound masking generator/equalizers. This model features two built-in digital noise generators and two analog noise generators allowing the versatility of digital, analog, or mixed noise at either of its two outputs. Each noise source is separately adjustable–between 80dBu and 0dBu in 0.1dB steps. The SMG-3001 offers a variety of user selectable filter options including one-third octave, parametric high/low pass, and high/low shelving filters. Each filter offers precision .1dB level and 1 Hz frequency steps. All set-up and operating functions of the SMG-3001 are conducted from a PC using software provided for Windows 95/98/2000/XP/NT4. After defining and downloading the control functions through the PC, the settings will be stored within the unit in non-volatile memory (no battery required). The SMG-3001 model features 12 storage memories and 12 preset functions. The unit occupies one rack space unit (13/4") with a depth of 10" behind the front panel. It contains a built-in power supply capable of operating between 94-260 VAC at either 50 or 60 Hz. The MG3001 includes a clock circuit that allows for varying parameters at different times of day. The device will ramp up gradually so that workers do not notice a difference in the noise level.

SMG-3001 -  $ 3,204.00

DSP Sound Masking Generator w/Page Input

AVLELEC SMG-2500 Sound Masking Processor is a digital pink-noise generator that includes a balanced line-level audio input and a 2-channel DSP processor, all in a single rack-space unit. An extended ‘non-apparent’ repeat time of noise (200 minutes) and output delay with distance/delay calculation, per channel helps insure the masking source will not be decoded in high security installations. The SMG-2500 includes two independent matrixes for channel-to-channel mixing and balanced input & outputs on plug-in barrier strip connectors. Noise & audio levels, plus two channels of combined 1/3-octave & parametric equalization, EQ, gain management & delay, are adjusted via computer software (Windows 95/98/2000/XP/NT4). Sixteen presets can also be recalled via contact-closures, RS-232, or other remote control options.There are no manual controls on front panel, to prevent tampering. All programming software & serial cable included. UL Listed.

SMG-2500 -  $ 2,103.00

SM805A Series 8 inch 12W masking driver in 325 backbox $104.00

$ 104.00

SM810A Series 8 inch 15W masking driver in 700 backbox from$ 120.00

from $ 120.00

LTSM830  with 1' x 2' grille include paging driver (20W) & masking driver (15W) in backbox assembly.  $ 251.00

$ 251.00

LTSM2830  with 2' x 2' grill include paging driver (12W, 15W or 20W) & masking driver (12W or 15W) in backbox assembly. $ 319.00

$ 319.00

How does an 

System Work?


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8641 South Warhawk Road, Conifer Colorado 80433
Tel: 303-670-1099 * FAX: 303-679-8949

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Welcome to White Noise Sound Masking by

Quality Sound Masking Installation and the best selection of high tech security systems are just two of the reasons that make the perfect choice for White Noise Sound Masking Systems. When you're looking for the best in Security Access, speech privacy devices, and high tech security systems, look no further than Since 1989, we've proudly been offering the best Sound Masking White Noise systems that help greatly increase speech privacy and security of your business or organization. We're GSA licensed, and are the chosen provider of sound masking systems by a number of government organizations and businesses. 

Whether looking for the best in white noise speech privacy systems, paging and background music accessories, has what you're looking for. From high tech speech privacy systems to a white noise machine for your office, carries the security solutions you need, and then some. We also take great pride in offering the very best Sound Masking installations. Our engineers understand the need for properly installed Speech Privacy Systems, and we guarantee our service will satisfy. When it comes to Sound Masking Systems, make your very first choice.


Sound Masking is the addition of sound created by special digital generators and distributed by normally unseen speakers through an area to reduce distractions or provide confidentiality where needed. The sound is broad band random that conveys no information about itself to a listener. It is often referred to erroneously as White Noise,  the sound spectrum and level is specially shaped to provide the degree of privacy desired by occupants. Masking operates by covering up or masking unwanted sounds, similar to perfume that covers up other odors. This is in contrast to the technique of active noise control which attempts to eliminate the unwanted sound. Sound masking is used in homes, commercial offices, medical facilities, court rooms, and in secure facilities to provide secrecy.

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