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DRAWMER
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HREE
-S
UM
O
PERATOR’S
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ANUAL
DRAWMER
THREE-SUM
MULTI-BAND INTERFACE
The benefits of multi-band processing, with the ability to
apply different parameters to different sections of the audio
bandwidth have been apparent to sound engineers for quite
some time.
However, ‘locking in’your audio to any one specific multi-
band unit can vastly reduce the creative options. The
desired combination of processing to deal with low
frequency energy, the vocal mid range and high frequency
detail and enhancement is not necessarily available from
any one manufacturer.
The new Drawmer THREE-SUM opens up a whole new
set of options allowing the engineer to split the audio into
two or three bands and apply his or her own sonic signature
to each part of the audio bandwidth.
CHAPTER 1
INTRODUCTION
The THREE-SUM employs a high quality signal path
culminating in a variable threshold, brick wall limiter section
with bypass facility. To ensure transparency the limiter
design is ‘two stage’, applying different processing to the
H.F. content of the material. In applications where the
dynamics of the material need to be retained to create an
open sound, the limiter is essential for catching peaks.
The THREE-SUM has been designed for use in high-end
mastering and general recording applications, alternatively,
it can transform a project studio, equipped only with ‘single
band’ processors, into a serious multi-band facility.
The Key Features are as follows:
• Continuously Variable Band Splitting
• Switchable Mute & Bypass On Each Band
• Variable Threshold, Two Stage Brick Wall Limiter Section
• Two Or Three Band Operation
• VU Metering With +10dB Re-Scale Mode For Hot Output Levels
• Variable Input & Output Levels
• Individual Band Or Multi-Band Processing
• High Quality, Minimal Signal Path With Balanced XLR Inputs/Outputs
Applications:
• Mastering • Stereo Sweetening • Bass Tracks • Drum Tracks • Voice Smoothing
• Use More Creatively - Single Band Distortion / Reverb / Delay
