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Analog Elemental Series
The DynaMaxx probably is the most consequent interpretation of a “set & forget“
compressor concept. In keeping with the SPL design philosophy, it incorporates
many features not found on standard compressors, and a unique control system
makes is surprisingly easy to use.
The DynaMaxx also offers a de-compression mode which may be used to counter
the effects of overcompression in previously processed source material.
Why is DynaMaxx so different? Though auto attack and release functions are nothing new,
in the DynaMaxx design, the time constants are automated in a very musical way. DynaMaxx
optimizes all time constants in real time during processing so that the compression character-
istics are continually matched to the source material.
The DynaMaxx circuitry actually uses two of the excellent THAT 2181 VCAs in SPL’s Double
VCA-Drive mode configuration, which doubles the operating range while increasing trans-
parency and reducing distortion. Another benefit of the DynaMaxx circuitry is that high
compression ratios do not affect high frequency detail – high amplitude, low-end bass can
be controlled without introducing pumping or other negative side-effects. Similarly, complex
stereo sources can be processed easily and very musically.
The DynaMaxx has numerous applications in recording and mixing, as well as for live appli-
cations, and because of the level of intelligent processing within the unit, there are only two
controls to adjust per channel, making operation very intuitive.
Compression
The COMPRESSION control sets the compression intensity by varying both Threshold and
Ratio simultaneously. The further the COMPRESSION control is turned clockwise (which
lowers the Threshold and increases the ratio), the more processing is extended to lower level
signals. The fully clockwise position is equivalent to a Ratio of 3:1.
The exact processing values are always depending on the source material. Loud signal
parts will always be processed with higher compression rates than quieter signal parts. The
DynaMaxx employs soft-knee compression characteristics, following the input signal‘s struc-
tures dynamically.
For gentle compression results, turn the COMPRESSION control clockwise until the Gain
Reduction LED ladder shows a peak level reduction of between 2 and 3 dB. Turning the
Compress control further clockwise will lower the Threshold to include more low-level signals
into the compression process. At the same time, compression ratio is increased up to a
maximum of 3:1.
The following diagram shows the gain control curve in normal compression mode with three
different COMPRESSION settings. For better readability of the graph, the gain has been kept
at 0dB, so no compensation for the gain reduction is applied.
DynaMaxx | Introduction
DynaMaxx | Control Elements