SCL2™ Dual/ Stereo Compressor/ Expander/ Gate/ Limiter USER’S GUIDE
1
IMPORTANT SAFETY INSTRUCTIONS – READ FIRST This symbol, wherever it appears, alerts you to the presence of uninsulated dangerous voltage inside the enclosure. Voltage that may be sufficient to constitute a risk of shock. This symbol, wherever it appears, alerts you to important operating and maintenance instructions in the accompanying literature. Please read manual. Read instructions: Retain these safety and operating instructions for future reference.
SCL2™ Dual/ Stereo Compressor/ Expander/ Gate/ Limiter IMPORTANT SAFETY INSTRUCTIONS – READ FIRST ................................................ 2 INTRODUCTION ........................................................................................................... 4 INSTALLATION ............................................................................................................ 5 Unpacking ..........................................................................................................
INTRODUCTION Thanks for purchasing Applied Research 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 performance.
INSTALLATION The ART SCL2™ may be used in a wide variety of applications and environments. Housed in a rackmountable, all-steel enclosure, the unit is designed for continuous professional use. Mounting location is not critical. However for greater performance and reliability, we recommend that users not place the unit on top of power amps, or other sources of heat and/or strong magnetic fields. Unpacking The SCL2™ was packed with care at the factory.
FIGURE 1 – Rear Panel REAR PANEL I/O Balanced Inputs The SCL2™ provides both an XLR and 1/4” input jack. These jacks are balanced, but the 1/4” jack can be used with unbalanced signals by simply plugging in an unbalanced cable. The inputs are designed for use with line level signals ranging from –30dBm to +20dBm. While it is possible to plug an instrument directly into the SCL2™, it is desirable to run the instrument into a preamp ahead of the unit.
FRONT PANEL CONTROLS and INDICATORS Power The POWER switch turns the power on and off to the unit. The SCL2™ should be turned “on” with all monitor levels turned down to protect against any thumping caused by power up. Likewise, the SCL2™ should be turned off only after turning all monitor levels down. Power on the SCL2™ before any monitoring outputs or power amps are turned on.
FIGURE 2 – Channel 1 Controls Attack Control The ATTACK control sets the time it takes the Compressor/Limiter to respond to increases in signal level (by reducing gain) and shape the front end of the dynamics envelope. One example is to listen to a snare hit and adjust the ATTACK control. A short attack makes the snare sound “thin”. As the attack time goes longer (the knob is turned clockwise) more of the thump in the compressed snare can be heard.
The Channel 1 knob always controls the output level of Channel 1, but can also serve as a master output level when the Link Mode is active. The Channel 2 LEVEL control operates as a standard Channel 2 level control in Dual mode or as a balance control when Link Mode is active. In Link Mode when the BALANCE control is turned fully counter-clockwise the Channel 1 output is fully on and Channel 2 output is muted 20dB. When centered, both channels have equal gain.
APPLICATIONS Compressor/ Limiter The main application of the SCL2™ is to control the dynamic range of an audio signal. Plug a line level (post preamplifier or other gain stage) source into either input, and set the threshold and output controls to provide the desired amount of compression to the input signal. To keep the compression effects to a minimum, adjust the THRESHOLD and RATIO controls such that the Compressor Attenuation meter reads 6dB or less.
WARRANTY INFORMATION Limited Warranty (USA only): Applied Research and Technology will provide warranty and service for this unit in accordance with the following warrants: Applied Research and Technology, (A R T) warrants to the original purchaser that this product and the components thereof will be free from defects in workmanship and materials for a period of three years from the date of purchase.
SERVICE The following information is provided in the unlikely event that your unit requires service. 1) Be sure that the unit is the cause of the problem. Check to make sure the unit has power, all cables are connected correctly, and the cables themselves are in working condition. You may want to consult with your dealer for assistance in troubleshooting or testing your particular configuration. 2) If you believe that the ART unit is at fault, go to www.artproaudio.com.
SPECIFICATIONS Input Impedance .................................. 10k Ohms Output Impedance Balanced/Unbalanced ............................ 200/100 Ohms Maximum Levels Inputs ..................................................... +21dBu Output .................................................... +21dBu Output Gain .......................................... +20dB max Frequency Response .......................... 10Hz to 100kHz (+/- 0.5dB) Dynamic Range ...................................
14
www.artproaudio.com E-mail: support@artproaudio.
