Manual

1
Introduction
• Up to 25dB of noise reduction from
virtually any audio source without sonic
artifacts
• External port available for additional
attenuation— providing in excess of 85dB
of noise reduction
• "Single-ended" operation eliminates need
for encode-decode process
• Adaptive threshold dynamically adjusts to
changing nominal signal levels
• Effectively decodes Dolby
®
encoded
sources
• Direct VCA control port access for additional
level control functionality
• Logic-controllable bypass and muting
• Flexible on-chip voltage reference
• 100dB dynamic range (noise reduction OFF)
• 0.02% typical THD+N (@ 1kHz, noise
reduction OFF)
• +7V to +20V operation
• No royalty requirements
About the SSM2000...
The SSM2000 is an advanced audio noise reduction system based on
patented HUSH
®
technology. The SSM2000 is commercially available from
Analog Devices, produced under the license of the HUSH patents. HUSH
®
combines a dynamic filter and downward expander to provide a high level
effectiveness without the sonic artifacts normally associated with noise
reduction systems. In addition, an Adaptive Threshold circuit detects
nominal signal levels and dynamically adjusts both thresholds, thereby
providing optimal results regardless of program source. Since it is a single-
ended system, HUSH can be used on virtually any audio source, including
audio and video tapes, radio and television broadcasts, or any other source
with objectionable noise. The SSM2000 can also be used with Dolby
®
encoded sources with excellent results.
FEATURES:
Congratulations on your purchase of the Rocktron HUSH
®
Super C
™
!
Designed for guitar applications, the Super C utilizes the latest in HUSH noise
reduction technology (including the SSM2000 HUSH IC, available from Analog
Devices) combined with the latest V.I.R. (Variable Integrated Release) circuitry
configured as a noise gate. This combination provides extremely effective noise
reduction while playing and complete silence when not.
Although the Super C is a stereo noise reduction system, a single HUSH
Threshold and Gate Threshold are used to control both channels.
This manual will introduce you to the various features and functions of the
Super C. Please keep it for future reference.