11.21.2008

The leading manufacturer of sound masking & paging system with complete acoustical solutions

Spectra® Desktop Series

Model LDT6


Spectra® Desktop Series
UL listed.

The Lencore Spectra® Desktop Sound Masking Unit is the most sophisticated unit of its kind for providing speech privacy in home offices, small waiting areas and for locations where it is difficult to install sound masking in the ceiling or plenum. It helps create speech privacy by generating a comfortable back ground sound. The Desktop Sound Masking Unit consists of an individual self-contained noise generator, audio amplifier, loud speaker, and power supply unit in a white damped metal enclosure. It is powered by an internal transformer with a 120 VAC plug (Plug-in can be configured for international use). Adjustments can be made by a small screwdriver (provided), to the contour and volume control.

The Desktop Sound Masking Unit can be uniquely adjusted to suit a variety of room conditions by making adjustments to the amplitude and spectra shapes. This adjustment can be made in increments of +/- ½ dB. In addition, the system has the adjustment capability to provide the most unobtrusive sound while obtaining the maximum speech privacy that meets ASTM E-1130 standards for speech privacy and sound uniformity. The spectrum shape adjustment ranges from 1 dB at 125 Hz to 20 dB at 8,000 Hz (typical). Range of sound level: 41-86 dBA.



More Information

Speaker Enclosure:
Speaker Body: Aluminum Housing
Grill Cover: Galvanized Perforated Grill
Speaker enclosure: Painted White

Height: 6"
Diameter: 6"
Weight: 3 lbs.

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:
• Power Requirement: 120 V AC, 60 Hz at 100 mA
• System can be tuned to +/- ½ dB


Electrical Requirement:
• 120 V outlet.
• Plug-in can be configured for international use.



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.


 

All Lencore sound masking systems are custom designed to meet all local codes and to fit a variety of site conditions and applications in:

  • Open Plan
  • Closed Plan
  • Retrofit
  • New Construction

Applicable Environments

  • Commercial Office Interiors
  • Healthcare Facilities
  • Pharmacies
  • Financial Institutions
  • Doctors Offices
  • Banking Branch Offices
  • Call Center Environments
  • Government Facilities
  • Legal Institutions & Offices
  • Military Bases & SCIFS

Request a Quote

Use Lencore's Project Request Worksheet to request a quote.

INSTALLATION PHOTO