Klark Teknik DN-540 Quad Compressor

Compressors were originally devised to reduce the dynamic range of audio signals. To do this they use gain modification that makes adjustments to signal levels automatically, dependant on the level and dynamic of the signal itself, and upon the character and control settings of the particular compressor unit.

Throughout the history of dynamics processing many different types of compressor have been produced using many different types of gain technology. Each type has a distinctive sound. Users have found many applications which benefit from these often unintentional compression audio artifacts, taking the use of compressors far beyond simple dynamic range reduction, sometimes even generating the complete reverse; dynamic enhancement. It is with these creative applications in mind, that the DN540 has been designed to offer a latency-free, comprehensive and compact dynamics processing package.

With its unique presence feature the DN540 will be especially useful on vocals to eliminate the "pumping" effects of spill and to add "air" to the sound without introducing noise.

• Quad channel compressor
• Easy to use and requires minimum set up to produce excellent results
• Features a unique and intuitive presence control that improves the high frequency sound quality without increasing noise or squealing (howl-round)
• Features extremely low noise and distortion levels
• Designed from a sonic point of view and can produce extremely transparent compression
• Advanced envelope generator with manual controls that can be easily switched in or out to produce transparency or creative dynamic effects
• The compressors intuitive turn it up, turn it down approach to control knob labeling avoids confusion during fast adjustment
• The status of bypass, solo and other major switches are boldly presented to avoid mistakes
• Linking features true power summing so it always provides true threshold setting for stereo material
• Great sounding compressor as it has been "tuned" by ear
• Road worthy chassis
• Balanced outputs
• Auto switching power supply
• 1U

Inputs - Four
Type: Analogue, electronically balanced female XLRs (Pin 2 hot)
Impedance: 10kΩ
Maximum input level: +22dBu
Common mode rejection: Typically, -80dB at 1kHz

Outputs - Four
Type: Analogue, electronically balanced male XLRs (Pin 2 hot)
Signal drive capability: <600Ω
Output impedance: <60Ω
Maximum output level: +22dBu

EXT inputs - Four
Type: Analogue, electronically balanced Jack sockets
Impedance: 20kΩ
Maximum input level: +22dBu
Common mode rejection: Typically -60dB at 1kHz

Performance
Maximum signal level any input or output: +22dBu
Frequency response: ±0.5dBu (input to output), 20Hz to 20kHz
Dynamic range: >116dB (22Hz to 22kHz unweighted)
Noise at main output with unity gain: -94dBu
Distortion at 1kHz 0dBu with steady unity gain condition: <0.05%
Signal delay: 0 seconds

Compressor
Threshold scale: -50dB to +25dB
Ratio scale: Minus infinity (-4):1 to 1:1
Attack scale: 0.1s to 20ms
Release scale: 50ms to 2s
Presence scale: Minimum (flat) to maximum (-3dB at 5kHz)
Gain scale: 0dB to 18dB

Terminations
Audio: 3-pin XLRs (male and female) and 1/4" TRS balanced Jack sockets
Power: 3-pin IEC

Power Requirements
Voltage: 100VAC to 240VAC ±10%
Frequency: 50Hz to 60Hz
Consumption: <25W

Dimensions
Height: 44.5 mm (1.75"), 1U high
Width: 483 mm (19")
Depth: 305 mm (12")

Weight
Net: 4.6 kg
Shipping: 5.6 kg

Operation
Temperature: +5°C to +40°C

Storage
Temperature: -20°C to +60°C

Due to a policy of continual improvement, Klark Teknik reserves the right to alter the function or specification at any time without notice.