RDL®

ST-LEQ1

Loudness Equalizer - Use with VCA

SKU: ST-VCA3
  • Loudness Contour to Follow Volume
  • Improved Aural Flatness at Low Levels
  • Installer-Defined Loudness Equalization
  • Automatic Loudness Equalization when used with any RDL® VCA Remote
Recommended Power Supply ( Not Included )
PS-24AS (USA)PS-24AX (International)
Category:

Description

The ST-LEQ1 has two line-level audio inputs and a single line-level audio output. The audio signal to be equalized connects to the EQ INPUT. If it is desired to mix an unprocessed source with the output signal, this second source is connected to the DIRECT IN input. Loudness equalization is applied to the EQ INPUT signal as the CONTROL voltage is varied.

The ST-LEQ1 may be operated together with any equipment which provides a 0 to 10 Vdc control. It is specifically designed to operate with other RDL equipment using 0 to 10 Vdc for level control. Because the ST-LEQ1 works with any RDL VCA module, all RDL remote level controls are suited for use with ST-LEQ1 Loudness Equalization.

The line-level audio source is first fed through the RDL VCA product, then through the ST-LEQ1. The audio output from the ST-LEQ1 feeds the system amplifier or other equipment. The CONTROL terminals to the ST-LEQ1 are wired in parallel with the 0 to 10 Vdc terminals on the RDL VCA. The remote volume control associated with the VCA/ST-LEQ1 combination is adjusted to the normal low listening level, then the installer sets the desired loudness equalization on the multi-turn trimming potentiometer on the ST-LEQ1. As the listening level is increased by the remote control, the loudness equalization is progressively decreased until the audio is flat at normal higher levels.

Specifications

Inputs (2):Mic: 200 Ω balanced; 5 kΩ unbalanced
Line: 30 kΩ bal. bridging or unbalanced
Input Levels (for +4 dBu output):Mic: −44 dBu to −60 dBu (150 Ω source)
Line: -18 dBu (-20 dBV) to +4 dBu
Output Signal (normal rated):+4 dBu, 150 Ω balanced
Headroom:18 dB
THD+N:Mic: < 0.05%; Line: <0.025% (unity gain);
0.025% typical at 15 dB attenuation
Frequency Response:Mic: 30 Hz to 20 kHz (±1 dB)
Line: 10 Hz to 20 kHz (±0.1 dB)
Noise:Mic: < -71 dB below +4 dBu output (150 Ω source; 50 dB gain)
Line: <-78 dB below +4 dBu output (maximum gain)
CMRR:Mic: > 60 dB; Line: > 60 dB, (50 Hz to 120 Hz)
Control Input:0 to 10 Vdc or 0 to 10 kΩ Linear
Attenuation Range:0 to 90 dB (>90 dB at 0 Vdc control)
Ambient Operating Environment:0° C to 55° C
Power Requirement:GROUND-REFERENCED, 24 Vdc @ 50 mA
Dimensions:Height: 0.7 in. (1.7 cm), Width: 3 in. (7.6 cm), Depth: 1.6 in. (3.9 cm)
WEEE weight:0.145 lbs.
Tariff code:8543.70.9860
Shipping Weight:0.2 lbs.
Package Dimensions:2 x 2 x 4 in.
Package Type:Cardboard Box

Related Products

VCAs & Related Products
  • Voltage Controlled Amplifier

    ST-VCA3

    Voltage Controlled Amplifier

EMC
  • STS-RF1

    Shielded Chassis for STICK-ON module

Related Products

STICK-ON® Mounting Accessories
  • SMK-12

    STICK-ON Mounting Plate

  • SR-10

    STICK-ON Series 19" Mounting Rack - 10 modules

  • SR-12A

    STICK-ON Series 19" Mounting Rack - 12 modules

  • ST-PBR4

    STICK-ON Mounting Bracket

  • ST-RRB1

    Rear rack rail mounting kit for any STICK-ON module

  • STR-19A

    STICK-ON Series 19" Racking System - 12 modules

  • STR-19B

    STICK-ON Series 19" Racking System - 10 modules

  • STR-H6A

    10.4" Rack Mount for 6 STICK-ON Series Products

General Mounting Accessories
  • DMK-5

    Detachable Mounting Kit for RDL Modules

  • MB-1

    Mounting Kit - RU, ST and TX Series

  • SR-4

    STICK-ON Series Mounting Rack - 7 modules

DIN Rail Mounting Accessories
  • DRA-35S

    STICK-ON DIN Rail Adapter - 1 module

  • DRA-35S6

    STICK-ON DIN Rail Adapter - 6 modules

General Wiring Accessories
  • DTB

    STICK-ON® Series Detachable Terminal Block

Dimensions

ST-LEQ1

Downloads

DocumentsFormat
DatasheetPDF
CAD FilesUnitsFormat
Engineering Functional BlockAmericanDXF
Panel Diagram - EndAmericanDXF
Panel Diagram - FrontAmericanDXF
Panel Diagram - EndMetricDXF
Panel Diagram - FrontMetricDXF
High Res ImagesFormat
st-leq1.zipTIF
Declaration of Conformity
Download

Diagrams

How To Buy

Direct Dealer Program

Becoming an RDL direct dealer is quick and easy. To become a direct dealer, your company must meet the following requirements:

  • Must be an A/V contractor, sound contractor or system integrator
  • Must possess a current resale certificate for your state
Click here to submit a new direct dealer account inquiry

Buy Online

CompanyAddressPhoneLink