03.12.2010

The leading manufacturer of sound masking & paging systems and complete acoustical solutions

Exposed Decorative Painted Unit with Junction Box

Model LG035M6/LG035M4 – HB-D

Exposed Decorative Painted Unit with Junction Box

The Lencore Spectra® Sound Masking decorative painted junction box units for exposed ceiling, consist of an individual self-contained noise generator, audio amplifier, loudspeaker in damped metal enclosure, powered by 16/18 volts AC and is capable of driving two secondary models. The speaker enclosure has an integrated junction box to house cables.

Each master unit and is solid state and consists of a CMOS/MSI digital random sequence noise generator, electronic amplifier, and filter for active spectrum shaping, and is equipped with a 10-step volume control plus an additional continuous volume control. Range of sound level: 41-86 dBA. Additionally contained is a continuous and completely separate volume control for paging/music.

The masking system can be uniquely adjusted to suit a variety of standard and non-standard ceiling conditions by making adjustments to the amplitude and spectra shape. In addition, the system has the adjustment capability to provide the most unobtrusive sound while obtaining the maximum speech privacy. The spectrum shape adjustment ranges from 1dB at 125 Hz to 20 dB at 8,000 Hz (typical).

Specify this unit when open ceilings or site conditions require an exposed unit to meet the design aesthetic.

Speakers can be custom painted to blend with any environment and are available in both 6" and 4" height.



More Information

Integrated Junction Box
Two speaker height available: 6" & 4"

Height:
6” LG035M6-HB-D - 4” LG035M4-HB-D
Diameter:
6” LG035M6-HB-D - 6” LG035M4-HB-D
Weight:
3 lbs. LG035M6-HB-D - 3 lbs. LG035M4-HB-D

Loudspeaker:
5-inch wide dispersion
Power Rating: 10 watts RMS
Frequency Response: 50 – 12,000 Hz
Impedance: 16 Ohms
Resonance: 82 Hz
Magnet Weight: 10 oz.
Magnet Structure Weight: 26 oz.
Cone: Formed Fiber
Cone Suspension: High Compliance Foam
Voice Coil: 1-inch diameter
Voice Coil Form: Anodized Aluminum

General Specifications:
Paging Input: 25v RMS at 12.5mW (50kOhms)
Power Requirement::
16v/18v AC, 60 Hz at 50mA (typical – no page)
With Paging: Up to 200mA
Output Adjustment::
15dB step-volume control
Additional continuous control (56-86 dBA total), plus a remote
volume control of 15dB with a central volume control unit

Wire Requirement: 18 gauge, plenum rated non-shielded 2, 4 or 6 conductor depending on application.



The Spectra® Sound Masking System must provide the following:

  • All masking/paging units must be UL Listed for air handling space.
  • Each self-contained masking (sound-generating unit) must have individual volume and spectrum shaping controls and a paging/music volume control that are active and readily accessible for user adjustment to suit zones of 225 square feet or more.
  • Each sound-generating unit contains an independent sound generator to eliminate phasing effects.
  • In open areas and larger enclosed spaces, the overall sound level produced should have spatial uniformity of no more than +/- ½ dBA between any two sound-generating units.
  • The sound-generating units must have a step attenuator, a rotating volume control for precise sound level adjustment, a rotating spectrum shaping control and a rotating volume control for paging/music.
  • The units shall be able to produce up to 86 dBA to meet the requirements for all ceiling treatments.
  • The sound-generating units must have adjustable sound spectrum shaping controls in order to meet the varying spectral requirements of drywall ceilings, various types of ceiling tile, air return grills and openings around lighting fixtures, etc.
  • The sound-generating units must be random sequence sound generators and not produce a noticeable repetitive pattern or sequence.
  • Sound masking must have E-sound® technology.
  • The spectrum shaping ability shall be variable within the accepted background sound masking range.
  • Units installed over drywall ceilings should be wired for spectrum control adjustment and remote sound level.
  • Speaker housings/enclosures must be damped to avoid undesirable resonance, etc.
  • The system must have the capability to provide paging simultaneously, on an all-call or individually zoned basis.
  • The paging volume control must be totally independent of the masking volume and smoothly override the masking. Paging power usage should be .0125 watts per 450 square feet.
  • Paging system must have IndePage™ technology.
  • All components and assemblies are to be production models of proven performance with continuity of the manufacturer throughout the system for individual component items.
  • System shall be designed so that individual speaker or component failure will have no impact on the balance of the system.
  • Design of system must be powered by low voltage of 16/18 volts. Power usage should not exceed 100 watts per 18,000 square feet for masking and 200 watts for masking and paging.
  • System shall be warranted to be free from defects in materials, workmanship and performance for a minimum of 10 years from date of installation.
  • System must have a Privacy Reporting Feature and use SPEC™ software.
  • System must confirm following ANSI standards: ANSI S1.4, ANSI S1.6, and ANSI S1.11.
  • Sound masking system must meet ASTM E-1130 standards for speech privacy and sound uniformity.
  • System must use at least 50% recycled content.
  • System must be manufactured in the USA.


 

Typical Applications For This Series

For use when a direct-fired speaker is required or where a sheetrock or gypsum ceiling is in place and where speaker grills can be installed flush to the ceiling. Available height 6” and 4" models. All Lencore Sound Masking Systems are custom designed to meet local codes and to fit a variety of site conditions and applications in:

  • Open Plan
  • Closed Plan
  • Retrofit
  • New Construction

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INSTALLATION PHOTO