Rupert Neve Designs Portico 543

GAIN RANGE

• Continuously variable from -6 dB to +20 dB

THRESHOLD RANGE

• Continuously variable from -30 dB to +20 dB

RATIO RANGE

• Continuously variable from 1.1:1 to Limit (40:1)

ATTACK RANGE

• Continuously variable from 20mS to 75mS

RELEASE RANGE

• Continuously variable from 100mS to 2.5 Seconds

TOTAL HARMONIC DISTORTION AND NOISE

•  1 kHz, 0 dBu output level, no load.
• Main Output, compressor bypassed: Better than 0.002%
•  20 dBu better than 0.0015%
• Main output, compressor engaged: Better than 0.075%

NOISE

• Measured at Main Output, un-weighted, 22 Hz - 22 kHz, Terminated 50 Ohm.
• With Gain at Unity, Compressor disengaged: Better than -98 dBu
• With Gain at Unity, Compressor engaged: Better than -93 dBu

FREQUENCY RESPONSE

• Main Output, Unity Gain:  150 kHz -3 dB

METERS

• Monitors INPUT LEVEL and GAIN REDUCTION

LINE INPUT IMPEDANCE

• 10,000 Ohms

MAXIMUM OUTPUT LEVEL

• 21 dBu from 20 Hz to 40 kHz

POWER REQUIREMENTS

• 500 series rack with 110-125 mA @ +/- 16V