ART Pro Audio SCL2 User Manual

SCL2™

Dual/ Stereo Compressor/ Expander/ Gate/ Limiter

USER’S GUIDE

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IMPORTANT SAFETY INSTRUCTIONS – READ FIRST

This symbol, wherever it appears, This symbol, wherever it appears, alerts

alerts you to the presence of uninsulated you to important operating and maintenance
dangerous voltage inside the enclosure. Voltage instructions in the accompanying literature.
that may be sufficient to constitute a risk of shock. Please read manual.

Read instructions:

Retain these safet y and operatin g instruct ions for future referenc e. Heed a ll warnings pr inted here a nd on the equ ipment.
Follow the operating instructions printed in this user guide.

Do not open:

There are no user serviceable parts inside. Refer any service work to qualified technical personnel only.

Power sources:

Only connect the unit to mains power of the type marked on the rear panel. The power source must provide a good
ground connection.

Power cord:

Use the power cord with sealed m ains plug appro priate f or your local m ains supply as provid ed with the equi pment. If the
provided plug does n ot fit into your outlet cons ult your service agent. Rout e the power cord so that it is not likely to be
walked on, stretched or pinched by items placed upon or against.

Grounding:

Do not defeat the groundin g and polarization means of the power cord plug. Do not remove or tamper with the ground
connection on the power cord.

Ventilation:

Do not obstruct the venti lati on slots or pos iti on the un it where t he air req uire d for ven tilat ion is im peded. If the uni t is to b e
operated in a rack, case or other furniture, ensure that it is constructed to allow adequate ventilation.

Moisture:

To reduce the risk of fire or elec trical sh ock do not expose the unit to r ain, m oisture or use in dam p or wet condit ions . Do
not place a container of liquid on it, which may spill into any openings.

Heat:

Do not locate the unit in a place close t o excessive heat or direc t sunlight, as this could be a fire hazard. Locate the u nit
away from any equipment, which produces heat such as: power supplies, power amplifiers and heaters.

Environment:

Protect from exces sive dirt, dust, heat, and vibration w hen operating and storing. Avoid to bacco ash, drink spillage and
smoke, especially that associated with smoke machines.

Handling:

To prevent damage to the controls and cos m etics avo id rough handl ing an d exce ss ive vibrati on. Pr otect the controls f rom
damage during transit. Us e adequate padding if you need to ship the unit. To avoid injur y to yourself or damage to the
equipment take care when lifting, moving or carrying the unit.

Servicing:

Switch off the equipm ent and unplug the power cord immediatel y if it is exposed to m oisture, spilled liquid, objects fallen
into opening, or the power cord or plug becom es damaged during a lightning storm or if smoke odor or noise is noted.
Refer servicing to qualified technical personnel only.

Installation:

Install the unit in accordance with the instructions printed in the user guide.

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SCL2™

Dual/ Stereo Compressor/ E x pa nder / Ga t e/ Li mit er

IMPORTANT SAFETY INSTRUCTIONS – READ FIRST ................................................ 2

INTRODUCTION ........................................................................................................... 4

INSTALLATION ............................................................................................................ 5

Unpacking .............................................................................................................................................................................................. 5

AC Power Hookup .................................................................................................................................................................................. 5

Analog Audio Connections ..................................................................................................................................................................... 5

REAR PANEL I/O .......................................................................................................... 6

Balanced Inputs ...................................................................................................................................................................................... 6

Balanced Outputs ................................................................................................................................................................................... 6

Detector Loop ......................................................................................................................................................................................... 6

FRONT PANEL CONTROLS and INDICATORS ............................................................. 7

Power ..................................................................................................................................................................................................... 7

Bypass Switch ........................................................................................................................................................................................ 7

Threshold Control ................................................................................................................................................................................... 7

Knee switch ............................................................................................................................................................................................ 7

Ratio Control .......................................................................................................................................................................................... 7

Attack Control ......................................................................................................................................................................................... 8

Auto/ Man. Switch .................................................................................................................................................................................. 8

Release Control ...................................................................................................................................................................................... 8

Output Control ........................................................................................................................................................................................ 8

The Expander/Gate Switch ..................................................................................................................................................................... 9

The Expander/Gate Threshold Control ................................................................................................................................................... 9

Compressor Attenuation LED Meter ....................................................................................................................................................... 9

Output Level LED Meter ......................................................................................................................................................................... 9

The Link Switch ...................................................................................................................................................................................... 9

APPLICATIONS .......................................................................................................... 10

Compressor/ Limiter ............................................................................................................................................................................. 10

Stereo Mix and Mastering..................................................................................................................................................................... 10

Vocal and Instrument Leveling ............................................................................................................................................................. 10

Ducking ................................................................................................................................................................................................ 10

WARRANTY INFORMATION ....................................................................................... 11

SERVICE ..................................................................................................................... 12

SPECIFICATIONS ....................................................................................................... 13

LIST OF FIGURES

FIGURE 1 – Rear Panel .......................................................................................................................................................... 6

FIGURE 2 – Channel 1 Controls

............................................................................................................................................. 8

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INTRODUCTION

Thanks for purchasing Appl i ed Resear ch and Technology’s SCL2™ Offering a superb level of sound
quality, SCL2™ has a unique design that will enhance the sonic textures of your audio system for
years to come. Developed in partnership with studio and live-sound engineers, the SCL2™ is very
musical.

The SCL2™ was designed and constructed with high quality components, assuring a lifetime of
quiet, reliable perfor ma nc e.

SCL2™ offers:

- Two channels of dynamics processing

- Selectable stereo linking of channels

- Master volume and balance control in Link M ode

- LED metering of output level

- XLR balanced inputs and outputs

- 1/4” TRS active balanced inputs and outputs

- Variable Threshold & Rati o cont rol s

- Hard/ Soft Knee selection

- Variable Attack and Release controls

- Selectable Auto attack/ release mode

- Variable output level rotary controls

- Noise reduction is selectable between Expander and Gate

- Hardwire bypass

- 8-segment Gain Reduction LED array

- 10Hz to 100kHz frequency response (+/-0.5dB)

- Internal power supply

- 3-year parts and labor warranty

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